ThorLabs MCLS1 Multi-Channel Fiber-Coupled Laser Source w/ (4) MCLS1-635

ThorLabs MCLS1 Multi-Channel Fiber-Coupled Laser Source w/ (4) MCLS1-635

This Thorlabs MCLS1 Multi-Channel Fiber-Coupled Laser Source w/ (4) MCLS1-635 is new from surplus stock. This unit ships in the original manufacturer's packaging with a key.

• Optical Interface: FC / PC
• Wavelength: 635 nm
• Channel 1 Max Output Power: 4.0 dBm
• Channel 2 Max Output Power: 4.76 dBm
• Channel 3 Max Output Power: 4.40 dBm
• Channel 4 Max Output Power: 4.99 dBm

View Photo of Channel 1 Output Spectrum
View Photo of Channel 2 Output Spectrum
View Photo of Channel 3 Output Spectrum
View Photo of Channel 4 Output Spectrum

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Stock # 75233-2
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ThorLabs MCLS Series Multi-Channel Fiber-Coupled Laser Source

  • Four Independently Controlled Laser Diodes
  • Intuitive LCD Interface
  • USB Connection Allows Remote Adjustment of Power, Temperature, and Enabling
  • Meets 3B Laser Class Requirements for Safety
  • Fabry-Perot or DFB Laser Modules


The Thorlabs MCLS Series Multi-Channel Fiber-Coupled Laser Source consists of four independently controlled laser diodes, which can be chosen from the chart on the facing page. The laser source is configured to accept a wide range of fiber-pigtailed laser diodes. There are 24 different power/wavelength combinations currently available.

Each laser diode is operated from an independent, high-precision, low-noise, constant-current source and temperature control unit. An intuitive LCD interface allows the user to view and set the laser current and temperature control independently for each laser. The display indicates the channel number selected, the output wavelength of the source, the operating power calculated from the laser diode monitor diode, and the actual temperature to which the laser is set.

This device includes a microcontroller to fully control the laser’s optical power, its temperature, and to monitor the system for fault conditions. The laser source includes a USB connection that allows remote adjustment of power, temperature, and enabling. On the rear panel, analog inputs are available to modulate the lasers with an external signal. To prevent damage, the microcontroller will disable the output if the analog input plus the internal setpoint exceeds the laser limits.

Product Family: MCLS, MCLS1, MCLS-1, MCLS 1

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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MCLS1 Connections and Controls
Interface Control Optical Encoder with Push Button
Enable and Laser Select Keypad Switch Enable with LED Indication
Power On Key Switch
Fiber Ports FC / PC
Display LCD, 16 x 2 Alphanumeric Characters
Input Power Connection IEC Connector
Modulation Input Connector BNC (Referenced to Chassis)
Interlock 2.5 mm Mono Phono Jack
MCLS1 Communications
Communications Port USB 2.0
COM Connection USB Type B Connector
USB Cable Included 2m USB Type A to Type B Cable (Replacement Part Number USB-A-79)
MCLS 1 General Specifications
AC Input 100 - 240 VAC, 50 - 60 Hz
Input Power 35W (Max)
Fuse Ratings 250 mA
Fuse Type IEC60127 - 2/III, (250 V, Slow Blow Type ‘T’)
Fuse Size 5 mm x 20 mm
Dimensions (W x H x D) 12.6" x 2.5" x 10.6" (320 mm x 64 mm x 269 mm)
Weight 8.5 lbs (3.9 kg)
Operating Temperature 15 to 35 °C
Storage Temperature 0 to 50 °C

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Item Images

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ThorLabs MCLS Series Multi-Channel Fiber-Coupled Laser SourceThorLabs MCLS Series Multi-Channel Fiber-Coupled Laser SourceThorLabs MCLS Series Multi-Channel Fiber-Coupled Laser Source
ThorLabs MCLS Series Multi-Channel Fiber-Coupled Laser Source

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Manuals, Datasheets, Drivers, Links

Thorlabs MCLS Series Datasheet (pdf) 
Thorlabs MCLS Series Manual (pdf) 
Link to ThorLabs Website 

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