Quantum cascade laser driver
Koheron QCL100 is a high-performance current driver designed to drive high-voltage loads such as Quantum Cascade Lasers. It operates as a current sink, allowing the laser anode to be connected to the ground. The QCL100 driver provides a compliance voltage adjustable up to 13.5 V and an adjustable precision current limit. The board features a 5 MHz modulation input and a 10 Hz trimming input. It is supplied from a single 24 V input and comes with an aluminum base plate.
|Laser current||0 mA to 650 mA||0 mA to 1300 mA|
|Supply voltage||19 V to 26 V||19 V to 26 V|
|Compliance voltage||13.5 V||13 V|
|3 dB modulation bandwidth||5 MHz||5 MHz|
|Current monitor gain||2 V/A||1 V/A|
|RMS noise(10 Hz to 1 MHz)||680 nArms||1350 nArms|
|Current noise density(1 kHz)||650 pA/√Hz||1300 pA/√Hz|
|Modulation gain(Lo setting)||10 mA/V||20 mA/V|
|Modulation gain(Hi setting)||50 mA/V||100 mA/V|
|Operating temperature||0 °C to 50 °C||0 °C to 50 °C|
|Outside dimensions||100 mm x 68 mm x 16 mm||100 mm x 68 mm x 16 mm|
|Weight||130 g||130 g|
|Compatible lasers||Anode-grounded / Floating diodes||Anode-grounded / Floating diodes|
More Laser drivers
Modulation transfer function measured across a 25 Ω load at 400 mA (QCL100-A-500) and 12.5 Ω load at 1000 mA (QCL100-A-1000). Modulation input voltage amplitude is 2 Vpp.
The figure below shows the response (yellow) of the QCL100-A-500 driver to a 2 Vpp triangle modulation (green):
The QCL100 driver integrates a fast and precise current limit. Here the current limit clamps a 10 kHz sine wave at 400 mA:
External setpoint trimming input
The external trimming input can be use to perform a low frequency modulation with a 10 Hz bandwidth.
|QCL100-A-500||Max. output current 650 mA|
|QCL100-A-1000||Max. output current 1300 mA|
|REFERENCE||COUNTRY OF ORIGIN||HS CODE||HTSUS||ECCN|