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Compact Laser Modules with USB Connector
520 nm, 0.9 mW Output Power
Sample beam profile of the PL202 USB laser module, measured using our BC106N-VIS CCD beam profiler at a distance of 5 m.
Module Engraved with Logo and Item #
Color at End of Module Corresponds to Laser's Spectral Color
Highly-Attenuating Electrical Filter Protects Against Power Supply Noise
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PL201 Laser Module Held in a KAD11NT Unthreaded Kinematic Adapter and Mounted into an FMP1 Fixed Optic Mount
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USB Laser Module Held in an AD11F SM1-Threaded Adapter and Mounted into a KM100T Threaded Kinematic Mount
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USB Housing Features
Thorlabs' USB-equipped laser modules feature a typical output power of 0.9 mW (laser safety Class 2) at a 520 nm or 635 nm typical center wavelengths. The output is collimated with a Ø3 mm round beam profile at 50 mm from the housing. These modules offer single-spatial-mode output in a compact, electrically isolated cylindrical housing and are ideal for use as alignment lasers in optical systems. The lasers are driven in constant-power mode, with feedback from an internal photodiode used to maintain the optical output power. As these diodes are not thermally stabilized, their optical output power may fluctuate slightly during operation.
The USB Type-A connector on each laser module features a built-in, highly attenuating electrical filter to reduce noise for a more stable laser output. Also featured on the connector are a status LED, on/off switch, and laser warning information. Unlike our phono-jack-equipped laser modules and laser modules with bare wire leads, no adapters or extra connectors are needed to operate these lasers.
We recommend powering these lasers with our DS5 5 VDC power supply, which is sold separately below.
Thorlabs also offers a Mini-Series kinematic mount for Ø11 mm laser diode modules (available below). This kinematic mount is among our smallest kinematic mounts available and features 4-40 (M3) taps for mounting onto our Ø6 mm Mini-Series Posts.
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
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:
These adapters mount the laser diode housing into SM1 (1.035"-40) lens tubes, 30 mm cage systems, Ø1/2" posts, or Ø1/2" or Ø1" mounts. Please see the application photos in the Overview tab for examples.
The KAD11F and KAD11NT adapters provide ±6° of pitch and yaw adjustment. Two 80 TPI fine adjustment screws on the front plate of the adapter control the pitch and yaw position and can be turned using a 5/64" (2.0 mm) hex key.
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PL201 USB Laser Module Mounted in a MK11F Mini-Series Kinematic Mount
Thorlabs' Mini-Series Kinematic Mount for Cylindrical Components is our most compact solution for mounting the Ø11 mm laser diode modules sold above. This two-adjuster kinematic mount features a nominal 0.79" x 0.52" (20.0 mm x 13.2 mm) footprint, which is the same as our Mini-Series kinematic mirror mounts. Cylindrical components are secured at three points using a nylon-tipped locking screw and a double-bored mounting hole. Both the nylon-tipped setscrew and the two M2.5 x 0.20 adjuster screws accept a 0.050" (1.3 mm) hex key (not included).
For ease of adjustment, we recommend using the 0.050" hex key thumbscrews. We also offer a locking collar and spanner wrench for locking the adjuster screws in a desired position or for creating a hard stop.
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Region-Specific Adapters for DS5
The DS5 is a 5 V, 2 A regulated power supply with a USB Type-A female port. It can be used with any USB-compatible device that accepts a 5 VDC output, and is directly compatible with our USB-powered laser modules. A region-specific adapter plug is shipped with the DS5 power supply unit based on your location.
Thorlabs offers the CPS1 Battery Pack for powering our CPS laser modules and other USB-powered devices. The CPS1 battery pack outputs 5 VDC at up to 2 A, and offers 10 000 mAh capacity. A fully charged CPS1 battery pack can power any CPS laser module for at least 36 hours of continuous operation. The pack includes a USB-to-Micro-USB cable for charging and a custom USB-to-Phono cable for powering the CPS laser module. To activate the battery, simply push the power button once. The pack may be charged using standard 5 V USB chargers for portable devices or using a computer USB port. While the battery pack is charging, it can still supply power to an attached laser module.
The CPS1 Battery Pack also includes an LED flashlight adjacent to the micro-USB port. The flashlight is activated and deactivated by holding the power for two seconds.
When connecting the CPS Diode Module, the module and adapter should be connected first. Then the adapter cable should be plugged into the isolated power supply to avoid a short circuit in the phono jack. Please note that the USB adapter included with this battery pack is not intended to be used with power supplies that are not current-limited or isolated from ground, such as some computers or laptops.
Please note: Due to shipping restrictions for lithium ion cells, the CPS1 battery pack is not available for purchase in certain countries. In countries where it is available, the battery pack must be shipped separately using specifically regulated shipping methods and may require special shipping and handling charges. Our sales team is available to answer additional questions concerning the shipment of this battery pack.
This battery cannot be shipped to certain postal codes in and around Perth, Australia.