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Quantum cascade laser driver

PRODUCTS > PHOTONICS > LASER DRIVERS > QUANTUM CASCADE LASER DRIVER
QCL100 - Quantum cascade laser driver
QCL100 - Quantum cascade laser driver QCL100 - Current noise QCL100 - Modulation bandwidth

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 15 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.

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Specifications

QCL100-A-500 QCL100-A-1000
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

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Characterization

Current noise

QCL100 Quantum Cascade Laser driver current noise measurement

Modulation

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.

QCL100-A-500 modulation response
QCL100-A-500 modulation response
QCL100-A-1000 modulation response
QCL100-A-1000 modulation response

The figure below shows the response (yellow) of the QCL100-A-500 driver to a 2 Vpp triangle modulation (green):

QCL100 Quantum Cascade Laser driver large signal triangular modulation

Current limit

The QCL100 driver integrates a fast and precise current limit. Here the current limit clamps a 10 kHz sine wave at 400 mA:

QCL100 Quantum Cascade Laser driver current limit

External setpoint trimming input

The external trimming input can be use to perform a low frequency modulation with a 10 Hz bandwidth.

QCL100 Quantum Cascade Laser driver external setpoint modulation

Ordering codes

REFERENCE ATTRIBUTE
QCL100-A-500 Max. output current 650 mA
QCL100-A-1000 Max. output current 1300 mA

Export information

REFERENCE COUNTRY OF ORIGIN HS CODE HTSUS ECCN
QCL100-A-500 France 90303370 9030333800 EAR99
QCL100-A-1000 France 90303370 9030333800 EAR99

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