Driver for quantum cascade semiconductor laser (QCL)
2 A Wavelength Electronics, Inc.

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The QCLSeries Low Noise Quantum Cascade Laser Drivers are available in output currents up to 2 A. The QCL Series includes patented circuitry ideal for driving Quantum Cascade Lasers (QCLs) where electronic noise, coupled through the laser, affects sensor measurements. RMS noise for the QCL1000 is less than 0.7 μA.

An onboard Current Setpoint trimpot allows a DC bias to be set. Its signal sums with a remote Analog Input signal that can be negative or positive.

Safety: An onboard trimpot sets the current limit as you monitor the setting - without driving current through the QCL. Brownout, reverse voltage, and overvoltage protection isolates the QCL from power supply failures. An Overtemp Fault signal minimizes the chance of failure due to overheated electronics. An onboard Enable Switch controls when current can flow to the QCL. A remote Enable signal can also be used. Once enabled, there is a 1.5 second delay and a slow-start ramp to safely power on the QCL. LED status indicators for Power ON, Enable, and FAULT are on the front panel. Status signals on the output connector can also drive external LEDs.

This is an OEM controller, designed to be integrated into field deployed systems or used on a benchtop.

Applications: High performance chemical sensing in biomedical, imaging, spectroscopy, remote sensing, military, communications, aerospace and materials processing industries.

Free, effective, and responsive technical support is available to simplify integration of Wavelength products into your OEM design. Standard product can be easily modified to meet your application requirements.