Handheld Laser Source


Handheld Laser Source

  • Handheld Fiber-Coupled Laser Source
  • Ideal ad a Portable Alignment Laser
  • 3 Selectable Power Levels
  • Internal NiMH Rechargeable Battery


  • Output Wavelength: 635 nm
  • FC/PC Fiber Connector
  • Selectable Low (~1 mW), High (≥2.5 mW), and Pulse (≥2.5 mW at 2 Hz, 50% Duty Cycle) Output Power Levels
  • Automatic Power Control
  • Universal Power Supply Included
  • Red Rubber Cover Boot with Kickstand
  • Compact Design for Easy Handling: 5.8" x 3.1" x 1.36" With Boot

This compact, handheld fiber-coupled laser source (measuring only 5.8" x 3.1" x 1.36") is intended to be used as a portable alignment laser. The laser output of the HLS635 may be set in 3 modes: low power (~1 mW), high power (≥2.5 mW), and a pulse mode that switches the laser from high power to off at 2 Hz. The selected mode is indicated by indicator lights on the front panel of the HLS635. The output is FC/PC coupled using the standard SM600 single mode fiber pigtail, which provides true single mode output at 635 nm. The unit includes an internal 3.6 V NiMH rechargeable battery and charger. A removable red rubber cover boot with a kickstand is also included.

The universal DC power supply will work with line voltages between 90 and 264 VAC from 47 to 63 Hz. To charge this device, the HLS635 must not be lasing and be within the battery charge temperature range. Additionally, Thorlabs also offers other Fiber-Coupled Laser Sources.


Center Wavelength 635 nm
Operating Mode Low, High, Pulse
CW Output Power (High/Low) >2.5 mW/1 mW
Pulsed Output Power (High/Low) >2.5 mW/~0 mW
Power Stability ≤1%
Pulse Frequency 2 Hz, 50% Duty Cycle
Laser Class 3R
Fiber Connector FC/PC
DC Input Voltage 9 VDC, 2A (9.2 VDC Max)
Operating Temperature Range 4 - 45 °C
Battery Type NiMH, 3.6 V
Battery Life >8 Hours (on Full Charge), ~60 Days (on Standby)
Battery Temperature Limits -20 - 60 °C
Maximum Charge Time ~135 Minutes
Battery Charge Temperature Range 10 - 38 °C
Dimensions 5.8" x 3.1" x 1.36" (147.2 x 78.7 x 34.5 mm)
HLS635 Power Supply
AC Adapter Input 90 - 264 VAC, 0.6 A, 47 - 63 Hz
Max Power 18 W
Output Voltage 9 VDC, 2 A


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