Chapter 1 Introduction - THORLABS MCLS1-CUSTOM User Manual

4-Channel Fiber-Coupled Laser Source
Chapter 1 Introduction
Intended Use
This product is intended to be used as multi-channel fiber coupled laser source with up to four lasers installed for
use in a laboratory environment. The part is designed to interface with modulating sources as inputs and fiber
patch cable outputs. It can be operated through the front panel and touchscreen or connected to a PC via USB
port for GUI or serial command control.
Explanation of Safety Warnings
Warning indicates a hazard with a medium level of risk that, if not avoided, could result in
death or serious injury.
Caution indicates a hazard with a low level of risk that, if not avoided, could result in minor
or moderate injury.
Indicates information considered important, but not hazard-related, such as possible
damage to the product.
Danger, Warning, or Caution
Laser Radiation Warning
Shock Warning
Description
The Thorlabs 4-Channel Fiber Coupled Laser Sources provide easy coupling and simple control of laser diode driven
fiber optics. Each system is equipped with up to four fiber output light sources with wavelength available from
visible to IR. The laser sources come standard with FC/PC connectors, and each system can be made with single
mode fiber or PM fiber and any combination of four lasers. A sample list of available wavelengths is found in
Section 1.5.1; please visit our website for a full list of currently available options.
Each laser diode operates 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 parameters for each laser.
The user can adjust the laser current and temperature control independently for each output. The display
indicates the channel number selected, the output wavelength of the source, the operating power calculated from
the laser diode monitor diode (if applicable), and the actual temperature the laser is set to.
This device includes a microcontroller to fully control the laser's optical power, temperature, and 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. This is added to the internal set points. To prevent damage, the microcontroller will disable the output if
the analog input plus the internal set point exceeds the laser limits.
While most output sources fall within the class 3R laser rating, the system was fully designed to meet 3B laser
class requirements. There is an interlock located on the rear panel that must be shorted in order for any laser
output to be enabled. This can easily be configured to be triggered by doors to disable the lasers in unsafe
Rev. P, March 5, 2024
The CE/UKCA markings on the product are the
manufacturer's declaration that the product
complies with the essential requirements of
the relevant European health, safety, and
environmental protection legislation.
The symbol on the product, the accessories or
packaging indicates that this device must not
be treated as unsorted municipal waste but
must be collected separately.
Chapter 1: Introduction
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