HeNe Lasers: Red

Overview
Laser Safety
HeNe Accessories
Interlock Disassembly
Insights
Feedback

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
Linearly or Randomly Polarized Output Beams
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 to the right, 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 randomly polarized (unpolarized). The polarization state of a randomly polarized HeNe changes on nanosecond timescales; when averaged over time, the light emitted from these lasers appears randomly polarized. However, 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. Due to the significant 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 the table to the right, and model-dependent information is given in the tables below. 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.

Safe Practices and Light Safety Accessories

Thorlabs recommends the use of safety eyewear whenever working with laser beams with non-negligible powers (i.e., > Class 1) 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	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 are limited to 5 mW of output power in this class.
3B	Class 3B lasers are hazardous to the eye if exposed directly. However, diffuse reflections are not harmful. Safe handling of devices in this class includes wearing protective eyewear where direct viewing of the laser beam may occur. In addition, laser safety signs lightboxes should be used with lasers that require a safety interlock so that the laser cannot be used without the safety light turning on. Class-3B lasers must be equipped with a key switch and a safety interlock.
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

FiberPort and Thread Adapters

FiberPort and Thread Adapters for Self-Contained HeNe Lasers

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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 Lasers^a

Click for Details

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.

Note that these adapters are not compatible with the HNL008 Series of Cylindrical HeNe Lasers.

Mounting Adapters

Drop-In Post Clamp

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The C174TC is designed specifically for mounting Ø1.74" (44.2 mm) cylindrical lasers to Thorlabs optical posts with 8-32 (M4) taps. A captive screw with a 3/32" (2.5 mm) hex secures the laser in place.

V-Clamp Post Mount

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Item #	Qty	Description
C1513	1	Post Kinematic V-Clamp Mount, One PM4 Clamping Arm Included
PM4	1	Large Adjustable Clamping Arm, 6-32 Threaded Post
P8	1	Ø1.5" Mounting Post, 1/4"-20 Taps, L = 8"
PB1	1	Mounting Post Base, Ø2.48" x 0.40" Thick

View Metric Product List

Item #	Qty	Description
C1513/M	1	Post Kinematic V-Clamp Mount, Metric, One PM4/M Clamping Arm Included
PM4/M	1	Large Adjustable Clamping Arm, M4 x 0.7 Threaded Post
P200/M	1	Ø1.5" Mounting Post, M6 Taps, L = 200 mm
PB1	1	Mounting Post Base, Ø2.48" x 0.40" Thick

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

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Item #	Qty	Description
HCM2	1	XY Adjustable HeNe Mount for 60 mm Cage System (Imperial)
TR3	2	Ø1/2" Optical Post, SS, 8-32 Setscrew, 1/4"-20 Tap, L = 3"
PH3	2	Ø1/2" Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L = 3"
BA2	2	Mounting Base, 2" x 3" x 3/8"

View Metric Product List

Item #	Qty	Description
HCM2/M	1	XY Adjustable HeNe Mount for 60 mm Cage System (Metric)
TR75/M	2	Ø12.7 mm Optical Post, SS, M4 Setscrew, M6 Tap, L = 75 mm
PH75/M	2	Ø12.7 mm Post Holder, Spring-Loaded Hex-Locking Thumbscrew, L=75 mm
BA2/M	2	Mounting Base, 50 mm x 75 mm x 10 mm

The HCM2 Cage Mount enables integration of a cylindrical HeNe laser with a diameter between 1.74" and 1.77" (44.2 mm and 45.0 mm) into a 60 mm cage system or SM2 (2.035"-40) lens tube system. The HCM2 provides ±1.0 mm of coarse X and Y adjustment, and is compatible with Ø1/2" and Ø1" posts.

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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 image to the right).

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

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Figure 1: 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.	Metal Springs that Align and Stabilize Bore
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:

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.

0.8 mW Self-Contained (632.8 nm) HeNe Lasers

Zoom

Note that the output polarization applies only to lasers linearly polarized.

Click to Enlarge
Self-Contained HeNe Lasers can be fiber-coupled using a FiberPort Coupler and HCL2 FiberPort Adapter.

Mounting Options

Groove on Bottom of Self-Contained Lasers

Click to Enlarge
Bottom Groove in Laser Housing with Two XE25T3
T-Nuts Inserted

Click to Enlarge
Two BA1L Bases Connected to Laser Housing via T-Nuts

Self-Contained Laser with Internal High-Voltage Transformer
Available with Linearly or Randomly Polarized Output Beam
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 randomly polarized output beam. 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 to the right.

In addition, as shown to the left, 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.

Item #	Power Supply	Polarization Ratio	Power^a	1/e² Beam Diameter	Divergence	LMS^b	Noise (RMS)^c	Laser Class^d
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	Unpolarized
HNLS008R-EC	230 VAC
HNLS008R-JP	100 VAC

Minimum Power Measured at 633 nm
Longitudinal Mode Spacing
30 Hz to 10 MHz
During normal operation, the cavity length, and hence the power, can vary. Thus, these class 3R lasers can exceed the specified minimum power.

Based on your currency / country selection, your order will ship from Newton, New Jersey

+1 Qty Docs Part Number - Imperial Price Available

HNLS008L Self-Contained HeNe Laser, 632.8 nm, 0.8 mW, Polarized, 120 VAC Power Supply

$943.60

Today

HNLS008R Self-Contained HeNe Laser, 632.8 nm, 0.8 mW, Random, 120 VAC Power Supply

$878.68

Today

+1 Qty Docs Part Number - Metric Price Available

HNLS008L-EC Self-Contained HeNe Laser, 632.8 nm, 0.8 mW, Polarized, 230 VAC Power Supply

$943.60

Today

HNLS008R-EC Self-Contained HeNe Laser, 632.8 nm, 0.8 mW, Random, 230 VAC Power Supply

$878.68

Today

+1 Qty Docs Part Number - Japanese Price Available

HNLS008L-JP Self-Contained HeNe Laser, 632.8 nm, 0.8 mW, Polarized, 100 VAC Power Supply

$943.60

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HNLS008R-JP Self-Contained HeNe Laser, 632.8 nm, 0.8 mW, Random, 100 VAC Power Supply

$878.68

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2 mW Red (632.8 nm) HeNe Lasers

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Note that the output polarization applies only to lasers linearly polarized.

2.0 mW Red (632.8 nm) Output
Linear (500:1 Polarization Ratio) or Random 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 linear (500:1 polarization ratio) or random 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.

Item #	Power Supply	Polarization Ratio	Power	1/e²Beam Diameter^a	Divergence^b	LMS^c	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	Unpolarized	2.0 mW	0.63 mm	1.3 mrad	730 MHz	0.1%	1800 VDC	6.5 mA	3R

TEM₀₀, 1/e² Points ± 3% b. TEM₀₀, ±3% c. Longitudinal Mode Spacing d. 30 Hz to 10 MHz

5 mW Red (632.8 nm) HeNe Lasers

Zoom

Note that the output polarization applies only to lasers linearly polarized.

5.0 mW Red (632.8 nm) Output
Linear (500:1 Polarization Ratio) or Random 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 linear (500:1 polarization ratio) or random 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.

Item #	Power Supply	Polarization Ratio	Power	1/e²Beam Diameter^a	Divergence^b	LMS^c	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	Unpolarized	5.0 mW	0.81 mm	1.0 mrad	435 MHz	0.2%	2300 VDC	6.0 mA	3B

TEM₀₀, 1/e² Points ± 3% b. TEM₀₀, ±3% c. Longitudinal Mode Spacing d. 30 Hz to 10 MHz

10 mW Red (632.8 nm) HeNe Lasers

Zoom

Note that the output polarization applies only to lasers linearly polarized.

10.0 mW Red (632.8 nm) Output
Linear (500:1 Polarization Ratio) or Random 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 linear (500:1 polarization ratio) or random 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.

Item #	Power Supply	Polarization Ratio	Power	1/e²Beam Diameter^a	Divergence^b	LMS^c	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	Unpolarized	10.0 mW	0.68 mm	1.2 mrad	320 MHz	1.0%	3100 VDC	6.5 mA	3B

TEM₀₀, 1/e² Points ± 3% b. TEM₀₀, ±3% c. Longitudinal Mode Spacing d. 30 Hz to 10 MHz

15 mW Red (632.8 nm) HeNe Lasers

Zoom

Note that the output polarization applies only to lasers linearly polarized.

15.0 mW Red (632.8 nm) Output
Linear (500:1 Polarization Ratio) or Random 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 linear (500:1 polarization ratio) or random 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.

Item #	Power Supply	Polarization Ratio	Power	1/e²Beam Diameter^a	Divergence^b	LMS^c	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	Unpolarized	15.0 mW	0.70 mm	1.15 mrad	257 MHz	0.5%	3800 VDC	6.5 mA	3B

TEM₀₀, 1/e² Points ± 3% b. TEM₀₀, ±3% c. Longitudinal Mode Spacing d. 30 Hz to 10 MHz

21.0 mW - 22.5 mW Red (632.8 nm) HeNe Lasers

Zoom

Note that the output polarization applies only to lasers linearly polarized.

21.0 mW Red (632.8 nm) Output with Linear, 500:1 Polarization
22.5 mW Red (632.8 nm) Output with Random 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 HNL225R model offers a 22.5 mW, randomly polarized output. 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.

Item #	Power Supply	Polarization Ratio	Power	1/e²Beam Diameter^a	Divergence^b	LMS^c	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	Unpolarized	22.5 mW	0.70 mm	1.15 mrad	257 MHz	0.5%	3800 VDC	6.5 mA	3B

TEM₀₀, 1/e² Points ± 3% b. TEM₀₀, ±3% c. Longitudinal Mode Spacing d. 30 Hz to 10 MHz

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HeNe Lasers: Red

Applications

Features

Laser Safety and Classification

Safe Practices and Light Safety Accessories

Laser Classification

FiberPort and Thread Adapters

FiberPort and Thread Adapters for Self-Contained HeNe Lasers

FiberPort and Thread Adapters for Standard Cylindrical HeNe Lasersa

Mounting Adapters

Drop-In Post Clamp

V-Clamp Post Mount

Post and Cage Mount

Interlock Disassembly

Insights into HeNe Lasers

HeNe Lasers: Handling and Mounting Guidelines

0.8 mW Self-Contained (632.8 nm) HeNe Lasers

2 mW Red (632.8 nm) HeNe Lasers

5 mW Red (632.8 nm) HeNe Lasers

10 mW Red (632.8 nm) HeNe Lasers

15 mW Red (632.8 nm) HeNe Lasers

21.0 mW - 22.5 mW Red (632.8 nm) HeNe Lasers

FiberPort and Thread Adapters for Standard Cylindrical HeNe Lasers^a