Products HomeHeNe Lasers: Red
- Operating Lifetimes Up to 40 000 Hours
- Output Powers from 0.8 mW to 22.5 mW
- Low-Intensity Noise
HNL020LB
2 mW, Linearly Polarized
HNLS008R
0.8 mW, Fluctuating Polarization
Application Idea
HNL150RB Mounted in C1512 Clamps on Ø1.5" Posts
Please Wait
| Table 1.1 Common Specifications | |
|---|---|
| Mode Structure | TEM00>95% |
| Static Alignment | HNLS008: Approximately 1.75" from Base Cylindrical Housings: ±0.01" (Center to Outer Cylinder) ±1 mrad (Parallel to Outer Cylinder) |
| Starting Voltage | ≤10 000 VDC |
| Storage Lifetime | Indefinite (Hard-Sealed) |
| Operating Temperature |
HNLS008: -40 to 60 °C Cylindrical Housings: -40 to 70 °C |
| Storage Temperature |
HNLS008: -40 to 100 °C Cylindrical Housings: -40 to 150 °C |
| Relative Humidity (Non-Condensing) |
0 to 100% |
| Operating Altitude | 0 to 10 000 ft |
| Storage Altitude | 0 to 70 000 ft |
Applications
- Metrology
- DNA Sequencing
- Food Sorting
- Flow Cytometry
- Confocal Microscopy
- Imaging and Medical Equipment
- Opacity Monitoring
- Alignment
- Maritime Visual Guidance Systems
- Hematology
- Semiconductor Inspection
- Polarization Experiments
Features
- 632.8 nm Central Wavelength
- Linear or Fluctuating Output Beam Polarization
- Includes External Power Supply
- Packages Available with Integrated Shutters and Remote Interlock Connections
Thorlabs offers an extensive selection of CE compliant 632.8 nm (red) Helium-Neon (HeNe) Lasers with powers from 0.8 mW to 22.5 mW from stock. In addition to the applications listed here, HeNe lasers are widely used in education and as alignment tools due to their excellent beam quality and gas discharge laser characteristics. Depending upon the model, the output beam is either linearly polarized or the polarization state fluctuates over time. When the output polarization is fluctuating over time, any polarization optics in the path (intentional or unintentional) can cause large variations in the output power. Only polarized lasers should be used in applications that involve polarization optics. For a complete discussion of HeNe laser polarization, see our HeNe Laser Tutorial. Due to the significant amplified spontaneous emission (ASE) background, a bandpass filter should be used for precision measurements.
Specifications common to all of the lasers featured on this page are listed in Table 1.1, and model-dependent information is given in Tables G1.5, G2.1, G3.2, G4.2, G5.2, G6.2, and G7.2. All but the self-contained packages feature remote interlock connections and integrated shutters. Please see the Interlock Disassembly tab for integrating the remote interlock connector into an interlock or lab safety system.
For specialized applications, Thorlabs offers a Stabilized Red HeNe Laser, which is capable of either ±2 MHz stabilization in frequency stabilization mode, or ±0.2% power stabilization in intensity stabilization mode.
Laser Safety and Classification
Safe practices and proper usage of safety equipment should be taken into consideration when operating lasers. The eye is susceptible to injury, even from very low levels of laser light. Thorlabs offers a range of laser safety accessories that can be used to reduce the risk of accidents or injuries. Laser emission in the visible and near infrared spectral ranges has the greatest potential for retinal injury, as the cornea and lens are transparent to those wavelengths, and the lens can focus the laser energy onto the retina.
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Safe Practices and Light Safety Accessories
- Laser safety eyewear must be worn whenever working with Class 3 or 4 lasers.
- Regardless of laser class, Thorlabs recommends the use of laser safety eyewear whenever working with laser beams with non-negligible powers, since metallic tools such as screwdrivers can accidentally redirect a beam.
- Laser goggles designed for specific wavelengths should be clearly available near laser setups to protect the wearer from unintentional laser reflections.
- Goggles are marked with the wavelength range over which protection is afforded and the minimum optical density within that range.
- Laser Safety Curtains and Laser Safety Fabric shield other parts of the lab from high energy lasers.
- Blackout Materials can prevent direct or reflected light from leaving the experimental setup area.
- Thorlabs' Enclosure Systems can be used to contain optical setups to isolate or minimize laser hazards.
- A fiber-pigtailed laser should always be turned off before connecting it to or disconnecting it from another fiber, especially when the laser is at power levels above 10 mW.
- All beams should be terminated at the edge of the table, and laboratory doors should be closed whenever a laser is in use.
- Do not place laser beams at eye level.
- Carry out experiments on an optical table such that all laser beams travel horizontally.
- Remove unnecessary reflective items such as reflective jewelry (e.g., rings, watches, etc.) while working near the beam path.
- Be aware that lenses and other optical devices may reflect a portion of the incident beam from the front or rear surface.
- Operate a laser at the minimum power necessary for any operation.
- If possible, reduce the output power of a laser during alignment procedures.
- Use beam shutters and filters to reduce the beam power.
- Post appropriate warning signs or labels near laser setups or rooms.
- Use a laser sign with a lightbox if operating Class 3R or 4 lasers (i.e., lasers requiring the use of a safety interlock).
- Do not use Laser Viewing Cards in place of a proper Beam Trap.
Laser Classification
Lasers are categorized into different classes according to their ability to cause eye and other damage. The International Electrotechnical Commission (IEC) is a global organization that prepares and publishes international standards for all electrical, electronic, and related technologies. The IEC document 60825-1 outlines the safety of laser products. A description of each class of laser is given below:
| Class | Description | Warning Label |
|---|---|---|
| 1 | This class of laser is safe under all conditions of normal use, including use with optical instruments for intrabeam viewing. Lasers in this class do not emit radiation at levels that may cause injury during normal operation, and therefore the maximum permissible exposure (MPE) cannot be exceeded. Class 1 lasers can also include enclosed, high-power lasers where exposure to the radiation is not possible without opening or shutting down the laser. |  |
| 1M | Class 1M lasers are safe except when used in conjunction with optical components such as telescopes and microscopes. Lasers belonging to this class emit large-diameter or divergent beams, and the MPE cannot normally be exceeded unless focusing or imaging optics are used to narrow the beam. However, if the beam is refocused, the hazard may be increased and the class may be changed accordingly. |  |
| 2 | Class 2 lasers, which are limited to 1 mW of visible continuous-wave radiation, are safe because the blink reflex will limit the exposure in the eye to 0.25 seconds. This category only applies to visible radiation (400 - 700 nm). |  |
| 2M | Because of the blink reflex, this class of laser is classified as safe as long as the beam is not viewed through optical instruments. This laser class also applies to larger-diameter or diverging laser beams. |  |
| 3R | Class 3R lasers produce visible and invisible light that is hazardous under direct and specular-reflection viewing conditions. Eye injuries may occur if you directly view the beam, especially when using optical instruments. Lasers in this class are considered safe as long as they are handled with restricted beam viewing. The MPE can be exceeded with this class of laser; however, this presents a low risk level to injury. Visible, continuous-wave lasers in this class are limited to 5 mW of output power. |  |
| 3B | Class 3B lasers are hazardous to the eye if exposed directly. Diffuse reflections are usually not harmful, but may be when using higher-power Class 3B lasers. Safe handling of devices in this class includes wearing protective eyewear where direct viewing of the laser beam may occur. Lasers of this class must be equipped with a key switch and a safety interlock; moreover, laser safety signs should be used, such that the laser cannot be used without the safety light turning on. Laser products with power output near the upper range of Class 3B may also cause skin burns. |  |
| 4 | This class of laser may cause damage to the skin, and also to the eye, even from the viewing of diffuse reflections. These hazards may also apply to indirect or non-specular reflections of the beam, even from apparently matte surfaces. Great care must be taken when handling these lasers. They also represent a fire risk, because they may ignite combustible material. Class 4 lasers must be equipped with a key switch and a safety interlock. |  |
| All class 2 lasers (and higher) must display, in addition to the corresponding sign above, this triangular warning sign. |  |
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FiberPort and Thread Adapters
FiberPort and Thread Adapters for Self-Contained HeNe Lasers
The SM1A32 Thread Adapter allows externally SM05-threaded or internally SM1-threaded optomechanics to be attached to the output aperture of the
HNLS008R(-EC)(-JP) or HNLS008L(-EC)(-JP) laser.
The HCL2 Adapter, which features external 5/8"-32 threading, allows a FiberPort coupler to be attached directly to the threaded aperture of our self-contained HeNe lasers or any other 5/8"-32 tapped hole. A slip-plate design allows the position of the fiberport to be shifted and locked to maximize coupling efficiency. FiberPort mounting screws are included.
FiberPort and Thread Adapters for Standard Cylindrical HeNe Lasersa
The SM05AHN Thread Adapter allows SM05-threaded components to be attached directly to the front of a HeNe laser and is ideal for enclosing a HeNe beam path using SM05 Lens Tubes.
The HCL FiberPort Adapter allows a FiberPort coupler to be attached directly to the front of a HeNe laser. Both adapters can be attached to the laser via counterbored slots that fit industry-standard M3 and 4-40 four-bolt patterns. The HCL can also be mounted via the internal C-Mount-Threaded (1.00"-32) central bore.
Mounting Adapters
Drop-In Post Clamp
Click to Enlarge
V-Clamp Post Mount
Click to Enlarge
Figure 3.2 The C1512(/M) and C1513(/M) are designed specifically for fastening Ø0.56" (14 mm) to Ø2" (50 mm) cylindrical lasers to Thorlabs' rigid Ø1.5" Posts. One PM4(/M) Clamping Arm is included with each unit and additional clamping arms can be purchased as needed here.
Post and Cage Mount
Click to Enlarge
Click for Details
Figure 4.1 Remote Interlock Connector for 100 - 240 VAC Power Supplies
Interlock Disassembly
Each of Thorlabs' HeNe laser sources includes an external power supply with a remote interlock connector. The interlock connector can be disassembled for integration into an interlock system. The interlock is at AC line potential, so proper care must be taken to use the correct connectors and hardware. Be sure to confirm compatibility between the AC line and the interlock system.
The 100 - 240 VAC external power supply that comes with our cylindrical HeNe lasers uses a simplified interlock connector that includes a black, plastic cover that can be unscrewed. Once unscrewed, the shorting conductor on the connector is removed prior to integration into the interlock system (see Figure 4.1).
Insights into HeNe Lasers
Scroll down to read about:
- HeNe Lasers: Handling and Mounting Guidelines
Click here for more insights into lab practices and equipment.
HeNe Lasers: Handling and Mounting Guidelines
Click to Enlarge
Figure 185A The external housing of HeNe lasers is mechanically coupled to the components of the lasing cavity. Stress applied to the external housing can misalign and potentially fracture lasing cavity components, which can negatively impact the quality and power of the output laser beam (red arrow) or lead to laser failure
| 1. | High Reflector Optics | 7. | Anode |
| 2. | Gas Reservoir | 8. | Glass Laser Bore |
| 3. | Outer Housing | 9. | |
| 4. | Glass | 10. | Potting Compound |
| 5. | Glass-Metal Seal | 11. | Cathode |
| 6. | Output Coupling Optics |
HeNe lasers should be handled and mounted with care to protect them from damage.
Never apply a bending force to the laser housing. Stress applied to the laser's external housing can misalign or damage components in the laser cavity. This can:
- Affect the output beam quality.
- Result in reduced output power.
- Affect the beam pointing.
- Cause multimode effects.
Factory packaging protects the HeNe lasers from shocks and vibrations during shipping, but end users directly handle the bare laser housing. Due to this, HeNe lasers are in greater danger of experiencing dangerous stress during handling by the end user.
A result is that the primary cause of damage to HeNe lasers is rough handling after receipt of the laser. In extreme cases, shock and vibrations can shatter or fracture glass components internal to the laser.
To maintain the optimum performance of your HeNe laser, do not drop it, never use force when inserting it into fixture, and use care when installing it into mounts, securing it using cage components or ring accessories that grip the housing, transporting it, and storing it.
HeNe lasers will provide optimum performance over a long lifetime when they are handled gently.
Date of Last Edit: Dec. 4, 2019
| Posted Comments: | |
Li Zhang
(posted 2025-05-16 09:04:03.68) May I ask if there is a typical spectrum of this model of HeNe laser? We would like to know its actual measurement FHWM, which is an important indicator for us to purchase the laser ksosnowski
(posted 2025-05-22 02:05:14.0) Hello Li, thanks for reaching out to us. The typical coherence length of our HeNe lasers is >30cm. Linearly polarized versions tend to have greater coherence since only one polarization mode is present in the cavity. Based on the coherence length, we expect linewidths of <1.34pm for these lasers, however we have not measured the exact shape of these HeNe spectra. Based on your requirement of <0.1nm, the HeNe spectrum is sufficiently narrow for your application. sasha B
(posted 2023-04-27 22:15:05.393) Hi, I have one HNLS008R-EC laser and I wonder where the waist located, thanks! jgreschler
(posted 2023-04-28 04:18:22.0) Thank you for reaching out to Thorlabs. The beam waist for HeNe lasers is typically located internally to the laser cavity. Alexander Fateev
(posted 2023-04-11 15:06:33.83) Hello,
How much is the height of the laser beam output compare to to the bottom of the cabinet?
(HNLS008L-EC laser)
BR
Alexander cdolbashian
(posted 2023-04-13 11:33:41.0) Thank you for reaching out to us with this inquiry. From the bottom of the foot pads to the center of the aperture, the height is ~47.54mm, while the height from the bottom of the actual housing of this laser to the center aperture is ~45.65mm. These measurements were taken from the Solidworks file, using measurement tools. Slobodan Miljevic
(posted 2023-03-08 08:50:26.887) To whom it may concern,
I'm looking into purchasing 632.8 nm HeNe laser in this power range and I'm curious about intensity fluctuation. I think I have thoroughly read the webpage and the corresponding documentation and nowhere was it mentioned. Frequency fluctuation is specified, but not the intensity.
I would appreciate if you could provide me with that piece of data on this laser family.
Best regards,
Slobodan Miljevic ksosnowski
(posted 2023-03-10 01:54:51.0) Hello Slobodan, thanks for reaching out to Thorlabs. Typically, the short-term stability is ~0.2%, and the long-term stability is ~1.8%. After warm up, most power fluctuations are short, <2% drops in power, occurring every 20-50 minutes. Using a reference arm to normalize the output power can bring the stability <1%. These dips are caused by the power feedback loop. Changes in ambient temperature tends not to change the average power output, but it will cause dips to occur more frequently. Back reflections can cause much larger, higher frequency instability. This can result in strong power fluctuations of >10% over a few seconds. For HNL210LB we expect RMS noise ~0.5% across 30 Hz to 10 MHz. I have reached out directly to discuss this further. Alexis Carlotti
(posted 2022-11-25 10:25:55.25) Would you have an estimate of the frequency stability of these lasers? We need something like 2GHz. Thanks! ksosnowski
(posted 2022-11-28 09:57:47.0) Thanks for reaching out to Thorlabs. For the standard HeNe series we do not have frequency stability information, as these are only stabilized with respect to output power. Our HRS015B frequency stabilized HeNe has ±3 MHz over 8 hour operation period. Changes in temperature, mechanical stress on the HeNe housing, and optical backreflections can all negatively effect the stability of the modes within the HeNe cavity. I have reached out directly to discuss this application in more detail. user
(posted 2022-10-04 21:04:38.377) What is Thorlabs HNLS008L-EC laser bandwidth? ksosnowski
(posted 2022-10-04 09:46:43.0) Hello, thanks for reaching out to Thorlabs. The HNLS008 series has 1090MHz Longitudinal Mode Spacing (LMS). This can be used to estimate the coherence length: (speed of light)/(LMS). Natan Shaked
(posted 2022-06-14 22:06:23.187) Hello,
We bought HNLS008R 0.8 mW, Randomly Polarized lasers from you.
We are integrating them into our products. We are expected to buy many lasers of this model from you.
The problem is that there are power stability issues, especially in the beginning.
Can you please share with us the raw data optic of optical power vs time (as you are doing for the stabilized HeNe lasers in your website)? We need it, for comparison.
Thanks,
Natan
QART-Medical.com cdolbashian
(posted 2025-03-20 04:49:03.0) Thank you for reaching out to us with this observation Natan! I have contacted you directly to share the data which you requested. user
(posted 2021-10-05 11:10:28.577) I'm looking for a compact He-Ne laser that can be turned on/off using a computer.
The power supply of HNL020LB have a interlock port.
Using this port, can I turn on/off the laser with a computer? cdolbashian
(posted 2021-10-29 11:40:23.0) Thank you for reaching out to us at Thorlabs. Unfortunately, your PC would not be able to both, turn on and off the HeNe. I have contacted you directly to discuss this further. user
(posted 2020-11-30 23:47:23.623) i am using a He Ne laser having model no HNL050LB i want to know what is the actual coherence length of that particular model laser please to reply asundararaj
(posted 2020-12-02 02:43:46.0) Thank you for contacting Thorlabs. The coherence length is determined by the axial modes that are furthest apart. For these, the coherence length is approximately 30 cm. Claudio Cirelli
(posted 2019-12-18 08:10:13.9) Dir Sirs,
I would like to have the quote for the purchase of one power supply for the HNL050L laser.
I part number is HNL050-EC-PS.
I do not need the laser itself but just the power supply unit, but I could not find a quotation for it and how to order.
Best regards,
Claudio Cirelli YLohia
(posted 2019-12-18 03:05:53.0) Thank you for contacting Thorlabs. Quotes for component and custom items can be requested by emailing techsupport@thorlabs.com. We will reach out to you directly. Vignesh Kannan
(posted 2019-10-17 03:29:02.53) Hello,
I would like to enquire about the range of intensity fluctuation of the HNL050LB laser. We would like to use it in conjunction with the PDP90A position sensor detector.
Thank you. asundararaj
(posted 2019-10-17 05:14:10.0) Thank you for contacting Thorlabs. The intensity stability of the HNL050LB is about 0.2%. I have reached out to you directly to discuss this further. Fernando Silva-Vazquez
(posted 2019-05-20 09:52:36.22) About your HNL050RB, I need a new power supply, so can you sell it separately? Can you send me a quote?
Thanks!
Fernando Silva-Vázquez
fernando.silva@uv.es YLohia
(posted 2019-05-20 10:24:59.0) Hello, quotes for specials and/or custom items can be requested by clicking the "Request Quote" button above. We will reach out to you directly. Joshua Polark
(posted 2019-05-16 15:15:16.427) Hello, It says that these HeNe lasers have a 40,000 hour lifetime. Does the quality of the laser or power degrade over the lifetime? Is 40,000 hours when it will die and shut off, or what determines when the laser is at the end of its lifetime?
Thanks asundararaj
(posted 2019-06-10 04:13:26.0) Thank you for contacting Thorlabs. The lifetime of HeNe Lasers depend on the application and the point at which the power degrades to a point where it is no longer usable in a system. This is entirely dependent on the user’s definition of what is acceptable for their application. We expect the power to degrade by 1-2% per year, and have a 1-year warranty.
We have seen ~20% power drop at ~40,000 hour operating point, which is the basis of our definition of “lifetime” in this case. abouhadba.hani
(posted 2018-11-23 09:16:59.953) Hallo,
We would like to use this He:Ne laser to measure the wavefront aberrations of the optics, therefore it would be very helpful t us to know the wavefront parameters of its laser beam in advance like(P-V, Astigmatism, Coma, defocus,... etc).
Many thanks in advance
Hani YLohia
(posted 2018-12-03 12:02:06.0) Hello Hani, thank you for contacting Thorlabs. Unfortunately, we cannot specify these parameters. That being said, we do specify the mode structure to be TEM_00 > 95%. user
(posted 2018-03-17 23:59:56.023) What happened to the higher (21 mW) polarised 230V HeNe lasers? YLohia
(posted 2018-03-19 02:54:41.0) Hello, thank you for contacting Thorlabs. We are currently working to release this laser in the near future. I will reach out to you directly to discuss this further. doncurleybsap
(posted 2018-02-05 12:51:38.74) I currently use for my customers that I service their FTIR's Melles Griot/Idex. They are no longer manufacturing Lasers. I use their Laser 05-LHP-607-223, HENE 0.4 to 1 mw 632.8 nm. Do not know other specs.
Can you tell me if the Specs are similar, I see some are but am not knowledgeable about the other specs.
Looking for a replacement for my customers.
Thanks
Don Curley, Bay State Analytical Products, Inc. YLohia
(posted 2018-03-29 10:41:19.0) Response from Yashasvi at Thorlabs USA: Hello Don, thank you for taking your time out to leave a feedback. Based on the specs provided by you, it looks like the laser you currently have has a variable power level between 0.4 and 1mW. HNL020LB is a linearly polarized HeNe (PER of 500:1) with a fixed higher output power (2mW). This can, however, be attenuated to a variety of power levels by using one of neutral density filters that can be found on this (https://www.thorlabs.com/navigation.cfm?guide_id=2088) page. If you prefer unpolarized light, you can go with HNL020RB instead. Unfortunately, we are unable to provide a more in-depth comparison at this time since we don't have all the specs for the Melles Griot laser. I have reached out to you directly in case you have further questions regarding your selection. syim
(posted 2017-11-07 20:24:21.027) Hi, before ordering I would like to get information about the output beam height of HNLS008R-EC. Thank you. nbayconich
(posted 2017-12-12 10:42:23.0) Thank you for contacting Thorlabs. The beam height tolerance for these parts is ±0.1". These HeNe lasers are intended to be used with steering mirrors for proper alignment. The HNLS008R-EC can also be adapted with t-nuts to attach directly to optical table bases or optical posts to adjust the height and angle of the beam. I will contact you directly with more information. scholten
(posted 2017-10-17 15:28:45.903) We'd like to separate the output mirror of a HeNe laser, for use in an undergrad lab experiment to measure the speed of light (if you're interested, it's described in "Measuring the speed of light using beating longitudinal modes in an open-cavity HeNe laser", Am. J. Phys. vol 78 No. 5, page 524, May 2010).
For the polarized versions of your laser, is the output of the HeNe tube Brewster-angled and is the mirror separate or could it be separated?
Many thanks
Robert tfrisch
(posted 2017-12-15 02:15:01.0) Hello, thank you for contacting Thorlabs and sharing this application. Unfortunately, the mirrors in our HeNe lasers cannot be separated. I will reach out to you directly to discuss your application. adithyaganesh13
(posted 2017-10-03 03:49:40.0) I'm getting electric shock from the power supply. The type E plug is not compatible with the type D power sockets used in India, It will not be properly grounded. Can you please suggest a proper converter and where to buy it? tfrisch
(posted 2017-10-04 11:11:57.0) Hello, thank you for contacting Thorlabs. If there is an electrical problem between the power supply and the standard power of the outlet, we ask that you immediately stop using it to avoid safety risks. I will put you in contact with our Indian distributor who will be able to assist with power conversion. ksalee
(posted 2017-08-25 20:22:52.663) I got one HNL150L-EC laser. The laser is getting heated up so much when I switch it on. I came to know the heating issue when I touch one end of the laser. Please clarify me what is the reason for this one.
I found the model number written on the laser head is HNL150L-EC and on the power supply is HNL150L-EC. Did I get the compatible laser head and power supply? tfrisch
(posted 2017-09-20 11:11:21.0) Hello, thank you for contacting Thorlabs. A HeNe will often be warm under normal operation. We will reach out to you directly to discuss your unit and the exact temperatures. lawrence.lam
(posted 2017-07-25 17:17:12.813) Could you share the frequency stability spec for the un-stabilized HeNe laser (HNL050R) tfrisch
(posted 2017-08-17 11:35:27.0) Hello, thank you for contacting Thorlabs. While we don't keep a stability spec for these lasers, would expect them to be more stable than any diode laser, but certainly less stable than a frequency stabilized HeNe laser. I will reach out to you to discuss your application. aline.vernier
(posted 2017-03-03 05:55:47.84) Hello,
Could you provide the following information about the HNL225R-EC:
-is the specified divergence the half or the full angle of the beam?
-where is the waist located?
Many thanks in advance,
Best wishes
Aline tfrisch
(posted 2017-03-13 01:56:40.0) Hello, thank you for contacting Thorlabs. I have reached out to you directly about these laser specs. user
(posted 2017-01-31 06:49:09.997) Hi there,
the laser is hard wired into the laboratory interlock system. Now we want to move the laser. What is the make and type of this interlock connector? No information can be found in the manual.
Cheers
albert pbui
(posted 2017-01-31 09:13:54.0) Hello Albert,
It seems you didn't leave your contact information. We need your laser's model number to further assist you. Please feel free to reach out to us at techsupport@thorlabs.com or by calling 973-300-3000 for support. carlos.montero
(posted 2016-11-17 13:15:54.587) I have a HNL100L Laser and I would like to know exactly where the beam waist is located. Best regards. Carlos tfrisch
(posted 2016-11-29 01:32:52.0) Hello, thank you for contacting Thorlabs. I will reach out to you directly about the beam specifications. michael.koller
(posted 2015-11-17 12:58:07.44) Hello, we've got a 0.8mW HeNe Laser in a Lab here and I wonder about the Laser Class 3R and the precautions with safety glasses for red and so on..
may you explain me the calculation - in my Guess it might be Laser Class 2 in maximum...
Best regards
Michael Koller jlow
(posted 2015-11-17 01:56:22.0) Response from Jeremy at Thorlabs: The 0.8mW specified for the HeNe is the minimum output power. Due to manufacturing variation, some of these will have a little over 1mW which would put it in the Class IIa (3R) category. ebenson
(posted 2015-10-02 14:25:27.953) In which plane is the HNLS008L polarized if the housing is mounted on a breadboard via BA1L brackets and the T-nuts? Presumably it would be either vertical or horizontal. besembeson
(posted 2015-10-09 05:30:39.0) Response from Bweh at Thorlabs USA: It is vertical. ahmmadvand
(posted 2014-03-17 10:44:40.32) Hi, I have an HNL050L-EC laser. There is a sizzling sound in the power supply. It happens after few minutes of turning on the LASER. Then the laser output light will be unstable and flickering. jlow
(posted 2014-03-18 11:41:12.0) Response from Jeremy at Thorlabs: I will contact you directly to provide an RMA number for sending this back to us for inspection/repair. Laura.waller
(posted 2014-02-13 12:13:33.43) Could you please lost the safety class of your lasers. The chart in the safety tab is too vague tone able to figure out which class each of these lasers for into sharrell
(posted 2014-02-14 10:46:33.0) Response from Sean at Thorlabs: Thank you for your feedback. The safety class of each laser can be found in the products specifications sheet, which can be found by clicking on the red Docs icon next to where the item is sold. For easier access to this information we have also moved it to the web page as well. user
(posted 2013-03-26 17:31:37.8) Hi, I have an older model 632.8 (HRP050) HeNe laser and I was curious if it has been measured whether or not there is any significant power out put at the higher transition line near 640 nm. We're currently using the laser to align a monochromator and wanted to know if a small secondary peak near 640 nm was from the laser itself or an alignment error in monochromator. jlow
(posted 2013-03-27 13:26:00.0) Response from Jeremy at Thorlabs: In a regular HeNe laser, there are a lot of non-lasing lines in the background but they are generally many orders of magnitude smaller than the main lasing line. It is therefore conceivable that a very small peak you see at 640nm could be due to that. Since an e-mail address wasn't provided, we couldn't contact you directly. If you could send us an e-mail at techsupport@thorlabs.com, we can take a look at the spectra you observe and discuss about this further. li.ju
(posted 2013-02-05 23:50:18.24) I have bought 2 HNL S008 R-EC. I had requested to have Australian power plugs but seemed fell to deaf ears. I could see that the plug tip is exchangable. Our safety regualation would not allow me to use an extra adaptor. I wonder if you could help or at least direct me to where I could get a replacement of the plug tips.
Regards,
Ju Li tcohen
(posted 2013-02-07 16:30:00.0) Response from Tim at Thorlabs to Ju Li: Thank you for contacting us! We have gotten in contact with you to supply a power cord suitable for an Australian standard outlet. |
Zoom
Figure G1.1 The output polarization applies only to linearly polarized lasers.
Click to Enlarge
Figure G1.2 Self-Contained HeNe Lasers can be fiber-coupled using a FiberPort Coupler and HCL2 FiberPort Adapter.
- Self-Contained Laser with Internal High-Voltage Transformer
- Available with Linear or Fluctuating Output Beam Polarization
- CE Compliant
- CDRH (IEC 60825-1) Laser Class: IIIa (3R)
Thorlabs' Self-Contained Helium-Neon Lasers integrate a red (632.8 nm) HeNe laser tube with a built-in voltage transformer. The rectangular housing incorporates a hard-sealed internal mirror and plasma tube design that maximizes the lifetime of the laser. The power cord and on/off rocker switch are located on the back of the housing. Please note that these self-contained lasers do not feature a remote interlock connector or an integrated shutter.
The HNLS008L lasers feature a linearly polarized output beam, which is vertically polarized with respect to the rectangular housing, while the HNLS008R features a fluctuating output beam polarization. These lasers are an ideal choice for applications that require low-power or ease of use, such as alignment or the classroom. The lasers have an external 120 V, 230 V (-EC), or 100 V (-JP) wall adapter that plugs into the back of the module. If you require a different adapter plug, please contact Tech Support before ordering.
Mounting Options
The output aperture is internally 5/8"-32 threaded. Our SM1A32 adapter (not included) connects to this aperture and accepts externally SM05-threaded (0.535"-40) or internally SM1-threaded (1.035"-40) optomechanics. Alternatively, the HCL2 FiberPort Adapter allows a FiberPort coupler to be attached directly to the front of the laser, as shown in Figure G1.2.
In addition, as shown in Figures G1.3 and G1.4, the bottom of the laser contains a groove that accepts our XE25T3 (XE25T3/M) Low-Profile T-Nuts, providing an easy way to use standard optomechanical bases to mount the laser to a breadboard or optical table.
| Table G1.5 Specifications | ||||||||
|---|---|---|---|---|---|---|---|---|
| Power Supply | Polarization Ratio | Powera | 1/e2 Beam Diameter | Divergence | LMSb | Noise (RMS)c | Laser Classd | |
| HNLS008L | 120 VAC | 500:1 | 0.8 mW | 0.48 mm | 1.7 mrad | 1090 MHz | <1.0% | 3R |
| HNLS008L-EC | 230 VAC | |||||||
| HNLS008L-JP | 100 VAC | |||||||
| HNLS008R | 120 VAC | N/A | ||||||
| HNLS008R-EC | 230 VAC | |||||||
| HNLS008R-JP | 100 VAC | |||||||
Zoom
Figure G3.1 Note that the output polarization applies only to linearly polarized lasers.
- 2.0 mW Red (632.8 nm) Output
- Linear (500:1 Polarization Ratio) or Fluctuating Polarization
- External Power Supply Included
Thorlabs' cylindrical, 2.0 mW, red (632.8 nm) Helium-Neon lasers feature a tube design that makes them easy to mount in nearly any optical system. These lasers are offered with either a linear (500:1 polarization ratio) or fluctuating polarization. The linearly polarized beam is polarized vertically with respect to the cable at the rear of the laser's housing. A built-in interlock circuit is included that can be integrated with lab safety systems (see Interlock Disassembly tab for details). An external power supply and a location-specific power cord are included.
| Table G3.2 Specifications | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Item # | Power Supply | Polarization Ratio | Power | 1/e2 Beam Diametera | Divergenceb | LMSc | Noise (RMS)d | Operating Voltage | Operating Current | Laser Class |
| HNL020LB | 100 - 240 VAC | 500:1 | 2.0 mW | 0.63 mm | 1.3 mrad | 730 MHz | 0.1% | 1800 VDC | 6.5 mA | 3R |
| HNL020RB | 100 - 240 VAC | N/A | ||||||||
Zoom
Figure G4.1 Note that the output polarization applies only to linearly polarized lasers.
- 5.0 mW Red (632.8 nm) Output
- Linear (500:1 Polarization Ratio) or Fluctuating Polarization
- External Power Supply Included
Thorlabs' cylindrical, 5.0 mW, red (632.8 nm) Helium-Neon lasers feature a tube design that makes them easy to mount in nearly any optical system. These lasers are offered with either a linear (500:1 polarization ratio) or fluctuating polarization. The linearly polarized beam is polarized vertically with respect to the cable at the rear of the laser's housing. A built-in interlock circuit is included that can be integrated with lab safety systems (see Interlock Disassembly tab for details). An external power supply and a location-specific power cord are included.
| Table G4.2 Specifications | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Item # | Power Supply | Polarization Ratio | Power | 1/e2 Beam Diametera | Divergenceb | LMSc | Noise (RMS)d | Operating Voltage | Operating Current | Laser Class |
| HNL050LB | 100 - 240 VAC | 500:1 | 5.0 mW | 0.81 mm | 1.0 mrad | 435 MHz | 0.2% | 2300 VDC | 6.0 mA | 3B |
| HNL050RB | 100 - 240 VAC | N/A | ||||||||
Zoom
Figure G5.1 Note that the output polarization applies only to linearly polarized lasers.
- 10.0 mW Red (632.8 nm) Output
- Linear (500:1 Polarization Ratio) or Fluctuating Polarization
- External Power Supply Included
Thorlabs' cylindrical, 10.0 mW, red (632.8 nm) Helium-Neon lasers feature a tube design that makes them easy to mount in nearly any optical system. These lasers are offered with either a linear (500:1 polarization ratio) or fluctuating polarization. The linearly polarized beam is polarized vertically with respect to the cable at the rear of the laser's housing. A built-in interlock circuit is included that can be integrated with lab safety systems (see Interlock Disassembly tab for details). An external power supply and a location-specific power cord are included.
| Table G5.2 Specifications | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Item # | Power Supply | Polarization Ratio | Power | 1/e2 Beam Diametera | Divergenceb | LMSc | Noise (RMS)d | Operating Voltage | Operating Current | Laser Class |
| HNL100LB | 100 - 240 VAC | 500:1 | 10.0 mW | 0.68 mm | 1.2 mrad | 320 MHz | 1.0% | 3100 VDC | 6.5 mA | 3B |
| HNL100RB | 100 - 240 VAC | N/A | ||||||||
Zoom
Figure G6.1 Note that the output polarization applies only to linearly polarized lasers.
- 15.0 mW Red (632.8 nm) Output
- Linear (500:1 Polarization Ratio) or Flucutating Polarization
- External Power Supply Included
Thorlabs' cylindrical, 15.0 mW, red (632.8 nm) Helium-Neon lasers feature a tube design that makes them easy to mount in nearly any optical system. These lasers are offered with either a linear (500:1 polarization ratio) or fluctuating polarization. The linearly polarized beam is polarized vertically with respect to the cable at the rear of the laser's housing. A built-in interlock circuit is included that can be integrated with lab safety systems (see Interlock Disassembly tab for details). An external power supply and a location-specific power cord are included.
| Table G6.2 Specifications | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Item # | Power Supply | Polarization Ratio | Power | 1/e2 Beam Diametera | Divergenceb | LMSc | Noise (RMS)d | Operating Voltage | Operating Current | Laser Class |
| HNL150LB | 100 - 240 VAC | 500:1 | 15.0 mW | 0.70 mm | 1.15 mrad | 257 MHz | 0.5% | 3800 VDC | 6.5 mA | 3B |
| HNL150RB | 100 - 240 VAC | N/A | ||||||||
ZoomFigure G7.1 Note that the output polarization applies only to linearly polarized lasers.
- 21.0 mW Red (632.8 nm) Output with Linear, 500:1 Polarization
- 22.5 mW Red (632.8 nm) Output with Fluctuating Polarization
- External Power Supply Included
Thorlabs' cylindrical red (632.8 nm) Helium-Neon lasers feature a tube design that makes them easy to mount in nearly any optical system. The HNL210LB outputs a 21.0 mW, linearly polarized beam that is polarized vertically with respect to the cable at the rear of the laser's housing. The HNL225RB model offers a 22.5 mW, fluctuating output polarization. A built-in interlock circuit can be integrated with lab safety systems (see Interlock Disassembly tab for details). An external power supply and a location-specific power cord are included.
| Table G7.2 Specifications | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Item # | Power Supply | Polarization Ratio | Power | 1/e2 Beam Diametera | Divergenceb | LMSc | Noise (RMS)d | Operating Voltage | Operating Current | Laser Class |
| HNL210LB | 100 - 240 VAC | 500:1 | 21.0 mW | 0.70 mm | 1.15 mrad | 257 MHz | 0.5% | 3800 VDC | 6.5 mA | 3B |
| HNL225RB | 100 - 240 VAC | N/A | 22.5 mW | |||||||
 Red HeNe Lasers |