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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 Quantum cascade laser driver current noise QCL100 Quantum cascade laser driver modulation response

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.

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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
QCL100 current noise

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 Quantum cascade laser driver modulation response
QCL100-A-500 modulation response
QCL100-A-1000 Quantum cascade laser driver 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-A-500 Quantum cascade laser driver triangular modulation response
QCL100-A-500 triangular modulation response

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
QCL100 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
QCL100 external setpoint modulation

Ordering codes

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

Export information

PRODUCT NUMBER 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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