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Nanosecond Pulsed Laser Systems


  • Center Wavelength Options from 405 nm to 640 nm
  • Fixed or Adjustable Pulse Widths
  • Internally or Externally Trigger Repetition Rates up to 10 MHz
  • Compact Laser System with Collimated Free Space Output

Application Idea

Adjust beam pointing angle tip and tilt when the laser (NPL52B shown) is mounted on the PY005 five-axis stage.

NPL52B

The drive electronics and temperature stabilization circuits for the laser diode are all integrated into the laser head.

Two ECM225 mounting clamps are included with each NPL Series laser.

Related Items


Please Wait
MTD415L Temperature Controller
Click for Details

The MTD415L Temperature Controller regulates the temperature of the laser diode to stabilize optical output power and wavelength.
Nanosecond pulsed laser shutter
Click to Enlarge

The shutter rotates open (left) and closed (right) and is held in position by magnets built into the shutter fixture. When the shutter is closed, the target on the cover indicates the approximate location of the beam.
Key Specifications
Item # NPL64A NPL41B NPL45B NPL49B NPL52B NPL64B
Center Wavelength (Typical) 640 nm 405 nm 450 nm 488 nm 520 nm 640 nm
Center Wavelength Tolerance ± 10 nm
Pulse Width (FWHM, Typical) 10 nsa 6 - 38 nsb 5 - 39 nsb 6 - 39 nsb 5 - 39 nsb
Internal Trigger No 1, 5, 10 MHz
User Trigger Frequency (Max)c 10 MHz
Average Output Power (Max)d,e 1.2 mW 15 mW 30 mW 20 mW 12 mW 20 mW
Peak Pulse Output Power
(Typical Max)e,f
13 mW 38 mW 75 mW 50 mW 30 mW 50 mW
Maximum Dimensions,
with ECM225 Clamps
139.6 mm x 61.5 mm x 54.7 mm
(5.49" x 2.42" x 2.15")
  • Please see below for a plot of a typical pulse.
  • Please see below for plots of typical pulses as well as a plot of typical pulse width vs. the pulse width control setting.
  • The maximum supported edge transition time is 1 ms.
  • This specification is given for operation at 10 MHz and with the greatest pulse width achievable by the item #.
  • Some short duration pulses do not reach maximum output power (see graphs below) and therefore have reduced average output powers.
  • These specifications are typical maxima and are given for pulses that reach maximum output power.  

Janis Valdmanis, Ph.D. Optics
Ultrafast Optoelectronics
General Manager

We Design, Develop, and Manufacture
Equipment up to 70 GHz 

Questions?

Demo Unit Requests?

Product Suggestions?

Custom or OEM Applications?

Contact Me

Features

  • Typical Center Wavelengths: 405 nm, 450 nm, 488 nm, 520 nm, or 640 nm
  • Drive and Temperature Stabilization Electronics Integrated into Laser Head
  • Fixed Pulse Width Model (Item # Ending in A)
    • Provides Pulses with Fixed 10 ns Typical Duration
    • Requires a User-Supplied External Trigger up to 10 MHz to Generate Pulses 
  • Adjustable Pulse Width Models (Item #s Ending in B)
    • Provide Pulses with Typical Durations within 5 ns to 39 ns
    • Internally Trigger Pulses at 1, 5, and 10 MHz Rates with Synchronized Output Signal
    • Enable Pulses to be Externally Triggered at Rates up to 10 MHz
  • Peak Optical Powers from 13 mW to 75 mW
  • Two ECM225 Clamps Included for Post Mounting the Laser Head
  • Replacement Power Supply Available

Thorlabs' Nanosecond Pulsed Laser Diode Systems are designed to provide a convenient, turn-key source of nanosecond pulse trains at repetition frequencies up to 10 MHz. These compact instruments consist of a laser head, an external +15 V power supply with location-specific plug, and two ECM225 mounting clamps. The drive electronics and temperature stabilization circuits for the laser diode are all integrated into the laser head, as are safety interlocks. A safety shutter can be rotated to cover the optical output port, as shown in the images to the right. The maximum peak pulse optical output powers vary from 13 mW to 75 mW, depending on Item #, as specified in the table at the right. 

Adjustable and Fixed Pulse Width Options
The NPL64A laser system provides fixed-width pulses with 10 ns typical durations in response to a user-supplied trigger signal input to the SMA connector on the back panel. When powered using the included power supply, only the application of the external trigger signal is required to generate pulses at rates up to 10 MHz. 

Lasers with Item #s ending in B have user-adjustable pulse durations, with ranges within 5 to 39 ns, as specified in the table at the right. Internal oscillators generate 1, 5, and 10 MHz frequency trigger signals, enabling these systems to produce stable trains of nanosecond laser pulses without an external trigger. Alternatively, pulses up to 10 MHz can be triggered by applying a user-supplied external trigger signal. The Rep Rate selector on the back panel allows the user to easily choose the desired internal or external trigger setting. Depending on the Rep Rate selector setting, the SMA connector on the back panel outputs a signal synchronized with the internally triggered pulses or accepts the user supplied trigger signal. For additional information, please see the Specs tab and the Back Panels tab.

Optical Emission
The optical output is a free-space beam collimated by an integrated aspheric collimating lens, which is positioned in a tube located behind the shutter. The lens position is factory set for a nominal divergence of about 1 mrad. The output beam is elliptical, as is typical of solid-state diode lasers that do not use anamorphic optical components to circularize the beam. If an application requires circularizing the beam, Thorlabs offers anamorphic elements, such as anamorphic prism pairs.

For fiber-coupled optical output options, we recommend choosing from our selection of coupling packages to accommodate the NPL series' larger beam diameter.

Output Power
The average optical output power of these laser systems is the product of the repetition rate, the pulse width, and the peak pulse power. The maximum average output power, which is specified in the table to the right above, is factory-set for each unit while it operates at the maximum repetition rate of 10 MHz and emits pulses of maximum width. By dividing this average power by the repetition rate and the pulse width, it is possible to estimate the peak pulse output power. However, as there are unit-to-unit variations in the pulse width across a particular model. For the NPL64A, these variations are nominal. However, for Item #s ending in B, the peak output power may be up to 15% greater or 24% lower than the value given in the table. Please note, as can be seen in the Typical Pulses plots below, that some short-duration pulses do not reach the maximum optical powers of longer-duration pulses. These pulses consequently have lower average output powers than longer-duration pulses.

Mounting the Laser Housing
The NPL series laser housings can be mounted to stages, bases, or posts using the two included ECM225 mounting clamps, each of which has three counterbores that accept 8-32 (M4) cap screws (not included). Use both clamps when mounting this laser, as this will protect against mis-alignment in the event that the laser is bumped; an applied force can cause rotation around a single point of contact, but rotation is resisted when there are two or more points of contact. 

Before attaching the clamps to the laser housing, each clamp must first be screwed to the stage, base, or post. After this is done, loosen the 5/64" (2 mm) locking screw in each clamp, insert the laser housing into the clamps, and then tighten the locking screws on both clamps until the laser housing is held securely. Compatible mounting fixtures with tip and tilt (pitch and yaw) adjustment capability, which can be helpful when the application requires tuning laser beam pointing angle, include the PY005(PY005/M) five-axis stage and the TTR001(TTR001/M) Tip, Tilt, and Rotation stage. If desired, ECM175 mounting clamps, available below, can alternatively be used to mount the laser on its side.

Item # NPL64A NPL41B NPL45B NPL49B NPL52B NPL64B
Center Wavelength (Typical) 640 nm ± 10 nm 405 nm ± 10 nm 450 nm ± 10 nm 488 nm ± 10 nm 520 nm ± 10 nm  640 nm ± 10 nm 
Pulse Width (FWHM) 10 ns ± 1 nsa  6 ns ± 1 ns
(Min, Control Setting 1)
38 ns ± 3 ns
(Max, Control Setting 16)b
5 ns ± 1 ns
(Min, Control Setting 1)
39 ns ± 3 ns
(Max, Control Setting 16)b
6 ns ± 1 ns
(Min, Control Setting 1)
39 ns ± 3 ns
(Max, Control Setting 16)b
5 ns ± 1 ns
(Min, Control Setting 1)
39 ns ± 3 ns
(Max, Control Setting 16)b
Typical Pulsesc
Internal Trigger No 1, 5, 10 MHz
User Trigger Frequencyd (Max) 10 MHz
Average Output Power(Max) 1.2 mW 15 mW 30 mW 20 mW 12 mW 20 mW
Peak Pulse Output Powerf
(Typical Max)
13 mW 38 mW 75 mW 50 mW 30 mW 50 mW
Pulse Energye
(Typical Max)
0.12 nJ 1.50 nJ 3.00 nJ 2.00 nJ 1.20 nJ 2.00 nJ
Output Spectrum (Typical)
NPL64A Typical Spectrum
Click for Details
NPL41B Typical Spectrum
Click for Details
NPL45B Typical Spectrum
Click for Details
NPL49B Typical Spectrum
Click for Details
NPL52B Typical Spectrum
Click for Details
NPL64B Typical Spectrum
Click for Details
Beam Pointing Accuracyg ≤3°
Beam
Divergenceh
(1/e2), Typical
Major Axis 1.5 mrad 0.5 mrad  0.5 mrad 0.8 mrad 1.5 mrad
Minor Axis 0.5 mrad 0.3 mrad 0.25 mrad 0.4 mrad  0.5 mrad
Beam
Full Widthh
(1/e2) at 5.0 m
Major Axis 5.3 mm 2.5 mm 3.3 mm 2.9 mm 3.2 mm 4.8 mm
Minor Axis 2.1 mm 1.7 mm 1.6 mm 1.9 mm 2.0 mm 2.7 mm
Aspheric Collimating Lens C340TMD-B C610TME-A C610TME-A C610TME-A C610TME-A C340TMD-B
Output Beam Image (Typical)i NPL Typical Beam
Click to Enlarge

  • The NPL64A outputs pulses of fixed width. Please see Typical Pulses row for plots of a typical pulse.
  • The pulse widths of the lasers with Item #s ending in B are adjustable in 15 approximately equal increments, from the minimum to the maximum specified widths. Please see "Typical Pulses" row for plots of typical pulses.
  • Click on 200 mm Spot Radius or 200 mm Spot Radius to see plot of typical pulses for each laser.
  • The maximum supported edge transition time is 1 ms.
  • This specification is given for operation at 10 MHz and with the greatest pulse width achievable for the item #.
  • These specifications are typical maxima and are given for pulses that reach maximum output power. Some short duration pulses do not reach maximum output power (see Typical Pulses plots) and therefore have reduced average output powers.
  • Relative to a beam axis normal to the plane of the front panel. Please see the Mounting tab for mounts and stages that can be used to adjust the beam pointing tip and tilt angles.
  • The major axis of the ellipse is vertically oriented when the bottom surface of the laser head is in the horizontal plane.
  • Image of the beam projected onto a translucent screen located 10 m from the laser output.
NPL Block Diagram
Click to Enlarge

Block diagram depicting the internal architecture of the laser head, which contains the pulser drive electronics, safety interlocks, trigger circuits, and temperature stabilization system. The dual-color (red/blue) LED status indicator is designed to be visible through most laser safety glasses.
Pulse Width vs. Control Setting for the NPL41B, NPL49B, NPL52B, and NPL64B
Click to Enlarge

Typical relationship between the Pulse Width control setting and the output pulse width for NPLxxB models. The actual relationship depends on the minimum and maximum pulse widths of the particular laser system. The NPL64A model does not have pulse width control.
Power Specifications
DC Input Voltage Range to Laser Head 14 V to 16 V
DC Input Current to Laser Head (Max) 800 mA
AC Input Frequency Range to Power Supply 50 Hz - 60 Hz
AC Input Voltage to Power Supply 100 V to 240 V
Trigger Specifications
Trigger Coupling AC Coupled
Trigger Input Frequencya (Max) 10 MHz
Trigger Input Voltage 200 mVpp to 2 Vpp
Trigger Input Impedance 5 kΩ
Trigger Output Voltageb 900 mV (Hi-Z Load)
600 mV (50 Ω Load)
Trigger Jitterc (Max) 20 ps RMS
100 ps Peak-to-Peak
Trigger Delayd From External Trigger Input to Optical Output 35 ns ± 5 ns
From Internal Trigger Output to Optical Outputb 28 ns ± 5 ns
  • The maximum supported edge transition time is 1 ms.
  • Only for Item #s Ending in B
  • Applies to external triggering (all Item #s) and internal triggering (only Item #s ending in B)
  • Trigger delay is measured between the SMA connector and the optical output at the lens.
Environmental and Physical Specifications
Operating Temperature Range 10 °C to 40 °C
Storage Temperature Range 0 °C to 50 °C
Humidity Range (RH) 5% - 85%
Trigger Connector on Back Panela Female SMA
Power Connector on Laser Head Male Mini-XLR Type
Maximum Dimensions without ECM225 Clamps 139.6 mm x 61.5 mm x 48.7 mm
(5.49" x 2.42" x 1.92")
Maximum Dimensions with ECM225 Clamps 139.6 mm x 61.5 mm x 54.7 mm
(5.49" x 2.42" x 2.15")
  • Input Only for NPL64A, Input/Output for Item #s Ending in B
NPL A Model Mechanical Drawing
Click to Enlarge

Mechanical Drawing for the NPL64A
NPL B Model Mechanical Drawing
Click for Details

Mechanical Drawing for Item #'s Ending in B

Back Panels of the Pulsed Laser Systems

NPL64A Back Panel
Click to Enlarge

NPL64A Back Panel
NPL64B and NPL52B Back Panel
Click to Enlarge

NPL41B, NPL45B, NPL49B, NPL52B, and NPL64B Back Panel
Callout Description
A1 Power Key Switch
A2 LED Laser Status Indicator, Dual Color (Red/Blue)
A3 Male Mini-XLR Connector for the +15 V Power Supply Jack
A4 2.5 mm Mono Phono Interlock Jack, Interlock Pin Installed 
A5 Female SMA Connector for the Trigger In Connector
Callout Description
B1 Power Key Switch
B2 LED Laser Status Indicator, Dual Color (Red/Blue)
B3 Pulse Width Selectora
B4 Male Mini-XLR Connector for the +15 V Power Supply Jack
B5 2.5 mm Mono Phono Interlock Jack, Interlock Pin Installed
B6 Chart of Repetition Rate Options vs. Selector Settings
B7 Repetition Rate Selectora
B8 Female SMA Connector for the Trigger In/Trigger Out Connector
  • Adjustable using the included 2 mm flathead screwdriver.

Components Included in Nanosecond Pulsed Laser Systems 

NPL64A Laser System Components
Click to Enlarge

Item # Shown: NPL64A

Systems with Item #s Ending in A

  • Laser Head with Integrated Drive Electronics and Temperature Stabilization Circuits
  • DS15 +15 V Power Supply with Mini-XLR Type Connector and Location-Specific Plug
  • Two ECM225 Aluminum Clamps
  • Interlock Pin Installed in Interlock Port (Not Shown)
  • Set of Keys for the Key Switch (Not Shown)
  • Quick Start and Safety Guide (Not Shown)
 
NPL64B Laser System Components
Click to Enlarge

Item # Shown: NPL64B

Systems with Item #s Ending in B

  • Laser Head with Integrated Drive Electronics and Temperature Stabilization Circuits
  • DS15 +15 V Power Supply with Mini-XLR Type Connector and Location-Specific Plug
  • Two ECM225 Aluminum Clamps
  • Interlock Pin Installed in Interlock Port (Not Shown)
  • Set of Keys for the Key Switch (Not Shown)
  • A Flathead Screwdriver with a 2 mm Edge (Included with Item #s Ending in B)
  • Quick Start and Safety Guide (Not Shown)

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. 

Laser Glasses Blackout Materials Enclosure Systems
Laser Viewing Cards Alignment Tools Shutter and Controllers
Laser Safety Signs

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.
  • 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.  Class 1
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.  Class 1M
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).  Class 2
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.  Class 2M
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.  Class 3R
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.  Class 3B
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.  Class 4
All class 2 lasers (and higher) must display, in addition to the corresponding sign above, this triangular warning sign  Warning Symbol

Janis Valdmanis, Ph.D. Optics
Ultrafast Optoelectronics
General Manager

Custom and OEM Options

When your application requirements are not met by our range of catalog products or their variety of user-configurable features, please contact me to discuss how we may serve your custom or OEM needs.  

Request a Demo Unit

Explore the benefits of using a Thorlabs high-speed instrument in your setup and under your test conditions with a demo unit. Contact me for details.

Contact Me
MX40B with cover removed
Click to Enlarge

 The MX40B Digital Reference Transmitter

Design, Manufacturing, and Testing Capabilities

Thorlabs' Ultrafast Optoelectronics Team designs, develops, and manufactures high-speed components and instrumentation for a variety of photonics applications having frequency responses up to 70 GHz. Our extensive experience in high-speed photonics is supported by core expertise in RF/microwave design, optics, fiber optics, optomechanical design, and mixed-signal electronics. As a division of Thorlabs, a company with deep vertical integration and a portfolio of over 20,000 products, we are able to provide and support a wide selection of equipment and continually expand our offerings.

Our catalog and custom products include a range of integrated fiber-optic transmitters, modulator drivers and controllers, detectors, receivers, pulsed lasers, variable optical attenuators, and a variety of accessories. Beyond these products, we welcome opportunities to design and produce custom and OEM products that fall within our range of capabilities and expertise. Some of our key capabilities are:

  • Detector and Receiver Design, to 70 GHz
  • Fiber-Optic Transmitter Design, to 70 GHz
  • RF & Microwave Design and Simulation
  • Design of Fiber-Optic and Photonics Sub-Assemblies
  • High-Speed Testing, to 70 GHz
  • Micro-Assembly and Wire Bonding
  • Hermetic Sealing of Microwave Modules
  • Fiber Splicing of Assemblies
  • Custom Laser Engraving
  • Qualification Testing

Overview of Custom and Catalog Products  

Our catalog product line includes a range of integrated fiber-optic transmitters, modulator drivers and controllers, detectors, pulsed lasers, and accessories. In addition to these, we offer related items, such as receivers and customized catalog products. The following sections give an overview of our spectrum of custom and catalog products, from fully integrated instruments to component-level modules.  

Fiber-Optic Instruments

To meet a range of requirements, our fiber-optic instruments span a variety of integration levels. Each complete transmitter includes a tunable laser, a modulator with driver amplifier and bias controller, full control of optical output power, and an intuitive touchscreen interface. The tunable lasers, modulator drivers, and modulator bias controllers are also available separately. These instruments have full remote control capability and can be addressed using serial commands sent from a PC.

  • Fiber-Optic Transmitters, to 70 GHz
  • Linear and Digital Transmitters
  • Electrical-to-Optical Converters, to 70 GHz
  • Modulator Drivers
  • Modulator Bias Controllers
  • C- and L-Band Tunable Lasers 

Customization options include internal laser sources, operating wavelength ranges, optical fiber types, and amplifier types.

Fiber-Optic Components

Our component-level, custom and catalog fiber-optic products take advantage of our module design and hermetic sealing capability. Products include detectors with frequency responses up to 50 GHz, and we also specialize in developing fiber-optic receivers, operating up to and beyond 40 GHz, for instrumentation markets. Closely related products include our amplifier modules, which we offer upon request, variable optical attenuators, microwave cables, and cable accessories.

  • Hermetically-Sealed Detectors, to 50 GHz
  • Fiber-Optic Receivers, to 40 GHz
  • Amplifier Modules
  • Electronic Variable Optical Attenuators
  • Microwave Cables and Accessories 

Customization options include single mode and multimode optical fiber options, where applicable, and detectors optimized for time or frequency domain operation.

Free-Space Instruments

Our free-space instruments include detectors with frequency responses around 1 GHz and pulsed lasers. Our pulsed lasers generate variable-width, nanosecond-duration pulses, and a range of models with different wavelengths and optical output powers are offered. User-adjustable repetition rates and trigger in/out signals provide additional flexibility, and electronic delay-line products enable experimental synchronization of multiple lasers. We can also adapt our pulsed laser catalog offerings to provide gain-switching capability for the generation of pulses in the 100 ps range.

  • Pulsed Lasers with Fixed 10 ns Pulse Duration
  • Pulsed Lasers with Variable Pulse Width and Repetition Rates
  • Electronic Delay Units to Synchronize NPL Series Pulsed Lasers
  • Amplified Detectors

Customization options for the pulsed lasers include emission wavelength, optical output powers, and sub-nanosecond pulse widths.


Posted Comments:
chien  (posted 2018-07-10 12:30:30.163)
We would like to use the NPL41B with a wave guide. I found that the output of NPL41B has SM05 series internal thread. Do you have a wave guide that I can use? I could not find an appropriate one on your site. Thanks alo. Best regards,
YLohia  (posted 2018-07-10 09:08:40.0)
Hello, thank you for contacting Thorlabs. You may use one of our modules from this page (https://www.thorlabs.com/navigation.cfm?guide_id=27) to couple the light into a fiber of your choice. I will reach out to you directly to discuss your specific requirements for a particular part recommendation.
aspitarte  (posted 2018-05-01 11:14:27.127)
Hi, Can you answer the questions about the safety compliance of these lasers and the power supply? Is device classified per Center for Devices and Radiological Health (CDRH)? Is device listed / approved by an (Nationally Recognized Testing Laboratory) NRTL*?
YLohia  (posted 2018-05-01 04:19:51.0)
Hello, thank you for contacting Thorlabs. The lasers shown on this page are classified with the CDRH and have accession numbers. The FDA Accession Number for the NPL64A is 1710115-000. The products themselves are currently not tested by an NRTL. However, the power supplies for these lasers do have NRTL certifications. The DS15 power supply used in the NPL family of products is UL Listed. I have reached out to you directly with additional information about these certifications.
wenzel.jakob  (posted 2017-11-28 20:12:52.39)
Could you provide information on the on the dimensions of the beam if collimated using the included lens? (I am primarily interested in the 405nm device, i.e. NPL41B)
tfrisch  (posted 2017-12-06 04:10:31.0)
Hello, thank you for contacting Thorlabs. The NPL41B has a typical beam size of 4mmx2.5mm at 20ft.
h.wu  (posted 2017-11-01 10:13:17.097)
Could I set the repetition rate to be 1 ~ 20 Hz by an external trigger? Thank you.
tfrisch  (posted 2017-12-19 02:43:09.0)
Hello, thank you for contacting Thorlabs. Those slow rep rates would be achievable as long as the triggering edge has a transition time of 1ms or less. I will reach out to you to discuss your application.
jonas.wietek  (posted 2017-08-03 21:02:00.107)
is it possible to somehow only get a single laser pulse?
tfrisch  (posted 2017-08-17 03:59:23.0)
Hello, thank you for contacting Thorlabs. The trigger can be used to produce a single pulse. The pulse width may be slightly different for a single pulse compared to a high rep rate pulse. I will reach out to you directly to discuss your application.
pavel.psota  (posted 2017-05-07 17:04:31.84)
Dear madam or sir, I join the previous question considering spectral bandwidth? Is the source suitable for interferometric applications? Thank you. Regards,Pavel
tfrisch  (posted 2017-05-18 05:13:32.0)
Hello Pavel, thank you for contacting Thorlabs. The bandwidths of these lasers are a few nm, so whether they can be used in an interferometric application depends on the coherence length required. I will reach out to you to share spectral data we have collected, and I expect we will publish similar curves to our webpage soon.
ahmed  (posted 2017-03-26 05:05:01.763)
Dear Sir/Madam regarding your product (NPL64B) Nanosecond Pulsed Lasers. Kindly can you provide me with the spectral bandwidth in nanometer for this laser? and if you can provide me with an image for the optical spectrum analyzer signal for the same laser. Thank you in advance for your help Best Regards
tfrisch  (posted 2017-04-18 03:12:34.0)
Hello, thank you for contacting Thorlabs. The diode inside is a Fabry-Perot laser diode with several modes. I will contact you directly with more information.
mojtaba.zamani.a  (posted 2017-02-23 03:13:02.39)
Its nice to see these new grate products.well done!
tfrisch  (posted 2017-03-03 07:57:23.0)
Hello, thank you for your feedback, it is good to know these will be useful in customer applications.

Pulsed Laser with 10 ns Fixed Pulse Width

Typical 10 ns Pulse of the NPL64A
Click to Enlarge

Typical pulse of the NPL64A, which outputs pulses of fixed width. Signal features below zero are artifacts introduced by the detector.
Back Panel of the NPL64A
Click to Enlarge

Back Panel (See the Back Panels Tab for Additional Information)
  • Typical Center Wavelength: 640 nm ± 10 nm
  • Average Output Power: 1.2 mW 
  • Fixed 10 ns Pulse Width
  • User-Supplied External Trigger Required to Generate Pulses
  • Trigger Signal Input via SMA Connector on Back Panel

This 640 nm wavelength pulsed laser system provides fixed-duration 10 ns pulses in response to a user-supplied trigger input sent to the TRIGGER IN port on the back panel of the laser head. The aspheric lens integrated into the laser head is factory set to collimate the optical output.

The back panel is shown in the image at near right. Pulses may be triggered at rates up to 10 MHz. A typical pulse is shown in the plot at far right. Please see the Back Panels tab and manual for more information about the back panel features.

These laser systems include the laser head, a +15 V power supply, and two ECM225 clamps for post mounting the laser head. Please see the Shipping List tab for a complete list of included components.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
NPL64A Support Documentation
NPL64ANanosecond Pulsed Laser Diode System, 640 nm, 10 ns Fixed Pulse Width
$895.00
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Pulsed Laser with Adjustable Pulse Width

Selected Specifications
Item # Center Wavelength (Typical) Pulse Width (FWHM, Typical) Typical Pulsesa Average Output Power (Max)b
NPL41B 405 nm ± 10 nm 6 - 38 ns 15 mW
NPL45B 450 nm ± 10 nm 5 - 39 ns 30 mW
NPL49B 488 nm ± 10 nm 6 - 39 ns 20 mW
NPL52B 520 nm ± 10 nm 5 - 39 ns 12 mW
NPL64B  640 nm ± 10 nm 20 mW
  • Click on 200 mm Spot Radius to see plot of typical pulses for each laser.
  • This specification is given for operation at 10 MHz and with the greatest pulse width achievable by the item #. Some short duration pulses do not reach maximum output power (see Typical Pusles plots in table) and therefore have reduced average output powers. 
Back Panel of the NPL64B and NPL52B
Click to Enlarge

Back Panel (See the Back Panels Tab for Additional Information)
  • User-Adjustable Pulse Width (See Table at Right)
  • Generate Pulses with or without a User-Supplied Trigger
  • Internally Triggered Pulse Rates of 1, 5, and 10 MHz
  • Trigger Signal Input/Output via SMA Connector on Back Panel

These nanosecond pulsed laser systems include everything required to produce nanosecond pulse trains at repetition frequencies of 1, 5 and 10 MHz. The aspheric lens integrated into the laser head is factory set to collimate the optical output.

Pulse widths are adjustable within 5 to 39 ns in 15 approximately equal increments. The specific pulse width range depends on the Item # as specified in the table to the right; please see the Specs tab for more information. Typical pulses plots are located in the table to the right, and a representative relationship between the Pulse Width setting and the pulse duration is included in the Specs tab. The controls for adjusting the pulse width and repetition rate are located on the back panel, which is shown in the image to the left. The included 2 mm flathead screwdriver can be used to operate these controls.

The Rep Rate selector on the back panel enables the user to either choose among three options for internally triggering the pulses, or to configure the laser to accept a user-supplied external signal to trigger pulse generation. The internal pulse trigger is generated by oscillators in the laser head, and positions A, B, and C on the Rep Rate selector correspond to internally triggered repetition frequencies of 1, 5, and 10 MHz, respectively. When pulses are internally triggered, the Trigger IN/OUT port provides an output signal that is synchronized with the pulse generation. Alternatively, when the Rep Rate selector is set to position D, pulses are generated in response to an external trigger signal applied to the Trigger IN/OUT port. With this option, pulses may be triggered at rates up to 10 MHz. Please see the Back Panels tab and manual for more information about the features on the back panel.

These laser systems include the laser head, a +15 V power supply, a 2 mm flathead screwdriver, and two ECM225 clamps for post mounting the laser head. Please see the Shipping List tab for a complete list of included components.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
NPL41B Support Documentation
NPL41BNanosecond Pulsed Laser Diode System, 405 nm, 6 - 38 ns Adjustable Pulse Width
$1,150.00
Today
NPL45B Support Documentation
NPL45BNanosecond Pulsed Laser Diode System, 450 nm, 5 - 39 ns Adjustable Pulse Width
$1,150.00
Today
NPL49B Support Documentation
NPL49BNanosecond Pulsed Laser Diode System, 488 nm, 6 - 39 ns Adjustable Pulse Width
$3,750.00
Today
NPL52B Support Documentation
NPL52BNanosecond Pulsed Laser Diode System, 520 nm, 5 - 39 ns Adjustable Pulse Width
$1,250.00
Today
NPL64B Support Documentation
NPL64BNanosecond Pulsed Laser Diode System, 640 nm, 5 - 39 ns Adjustable Pulse Width
$1,150.00
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Aluminum Side Clamps

  • Both Clamps Compatible with all NPL Series Laser Housings
  • ECM225 Attaches to Bottom or Top of Laser Housing
  • ECM175 Attaches to Sides of Laser Housing

Each NPL series Pulsed Laser Diode system includes two ECM225 anodized aluminum clamps, which snap onto the bottom of the laser housing and are secured by tightening the flexure lock using the 2 mm (5/64") hex locking screw. Additional ECM225 clamps, as well as ECM175 clamps that attach to the side of the laser housing, are available separately. The ECM225 and ECM175 are two of Thorlabs' family of aluminum side clamps that are designed to securely mount Thorlabs' rectangular electronics housings.

The ECM225 has three #8 (M4) counterbored through holes, and the ECM175 has one. The counterbored through holes allow the clamps to be mounted on a Ø1/2" post or any surface with an 8-32 (M4) tap. The clamp must be mounted via the counterbored through hole before the electronics housing is attached, as the counterbore will not be accessible once the housing is secured in the clamp.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
ECM175 Support Documentation
ECM175Aluminum Clamp for Electronics Housing, 1.75"
$17.75
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ECM225 Support Documentation
ECM225Aluminum Clamp for Electronics Housing, 2.25"
$18.26
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Replacement 15 VDC Regulated Power Supply

DS15 Region-Specific Power Supply Adapters
Click for Details

Region-Specific Adapters for DS15
Female Mini-XLR Connector
  • 15 VDC Regulated Power Supply
  • Mini-XLR Connector
  • Compatible with Our Nanosecond Pulsed Laser Systems

The DS15 is a 15 V regulated power supply with a 1.53 m (60.24") long cable and a Mini-XLR connector. It is suitable for any Mini-XLR-compatible device that requires a 15 VDC output, and is directly compatible with our nanosecond pulsed laser systems, sold above. A region-specific adapter plug is shipped with the DS15 power supply based on your location.

Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available / Ships
DS15 Support Documentation
DS1515 VDC, 1.2 A Regulated Power Supply with Mini-XLR Connector, 100/240 VAC
$45.00
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