Quantum Cascade Laser Sensors

PSI QCL-based CO sensor

QCL sensors use mid-infrared semiconductor laser sources, either intraband Quantum Cascade Lasers or Interband Cascade Lasers to enable high precision, high accuracy, and selective detection of trace gases such as greenhouse gases and chemical agents with application to a variety of commercial, industrial, defense and environmental problems.

Example PSI QCL-based sensor products include:

  • H2O2 sensor – monitors hydrogen peroxide in sterilization cycle processing of biopharmaceuticals.
  • CO sensor – monitors ambient CO levels for early fire warning
  • CH4 sensor – monitors ambient CH4 levels to high precision.
  • SOx sensor – monitors SO2 and SO3 in combustion exhausts