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QCL OEM Series

These Low Noise QCL Drivers have the lowest current noise density of any commercially available driver. Powering your QCL with this patented driver will enable better performance—at lower cost and in less time—than otherwise possible.

Additional information

  • Low noise - 0.4 µA - 1.3 µA RMS (100 kHz) - Model dependent
  • Ideal for precision chemical sensors
  • Up to 2000 mA QCL current
  • Compliance Voltage up to 20 V
  • Bandwidth 2 - 3 MHz
  • Constant Current Mode
  • Maximum Safety includes Current Limit
  • Onboard setpoint and limit controls
  • Remote Power On, Enable, Setpoint
  • Dual supply operation ± 24 V

This is the right driver for lasers that require a high-precision and ultra-low noise current source. The 500 mA QCL laser driver exhibits noise performance of 0.4 µA RMS to 100 kHz, and an average current noise density of 1 nA / √Hz—the lowest available today.


The QCL Driver family is available in four different OEM models so that you can choose the ideal one for your application:

  • QCL500 OEM, output current up to 500 mA
  • QCL1000 OEM, drive up to 1 A
  • QCL1500 OEM, delivers up to 1.5 A
  • QCL2000 OEM, output current up to 2 A

What is the difference between the standard QCL OEM and the QCL OEM(+)?
Often with epi-down configurations of the QCL, the exit lead is attached to the case and it is desirable to ground it. Now, the reverse polarity driver, a current source, is available in the OEM package to address this need:

  • QCL500 OEM(+), output current up to 500 mA
  • QCL1000 OEM(+), drive up to 1 A
  • QCL1500 OEM(+), delivers up to 1.5 A
  • QCL2000 OEM(+), output current up to 2 A

For integrated temperature control, the PTC-CH Series temperature controllers can be nested inside the QCL heatsink.

An instrument with an integrated power supply, intuitive touchscreen front panel and remote operation software is also available for benchtop use:

  • QCL500 LAB, output current up to 500 mA
  • QCL1000 LAB, drive up to 1 A
  • QCL1500 LAB, delivers up to 1.5 A
  • QCL2000 LAB, output current up to 2 A

In order to maintain their characteristically tight center linewidths and minimize jitter, quantum cascade lasers must be powered by drivers with exceptionally low current noise density. Our customers have reported achieving narrower linewidths with these drivers than any other they’ve used.


The high modulation bandwidth and fast rise-time maintains modulation waveform integrity so you can shape the laser output profile exactly as your application requires.


The robust design and simple operation of our drivers allows you to take your revolutionary QCL application from the test bench to market quickly and efficiently, using the same driver throughout the entire process. You can focus your efforts on the demanding technical aspects of the system.


All the essential control and monitor functions you expect in a Wavelength laser driver are incorporated into this driver, along with protection circuitry to safeguard your QCL from minor power source faults, over-temperature conditions, and electrical faults. The soft-clamp current limit features a brick-wall never-exceed characteristic that prevents the QCL from being accidentally over-driven and damaged.


+44 (0) 1829 773155

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All prices shown exclude VAT and delivery.

Delivery charge for UK webshop orders - £8.50 excl VAT.

Non-UK orders - Delivery is based on weight of order.

Non-UK orders - Local import duties and taxes are not included.