Cascade Technologies Limited

Erwan Normand

Nigel Langford

Geoffrey Duxbury

A hyperspectral sensor or imager comprising a laser for illuminating a scene and a detector for detecting light emitted by the laser and transmitted through the scene, wherein the laser is a chirped laser arranged to output multiple pulses having different wavelength ranges, the multiple pulses being used to form an extended continuous spectrum for illuminating the scene.

Polarimetric hyperspectral imager

A method apparatus for sensing gases using a semiconductor diode laser spectrometer, the method comprising: introducing a sample gas into a non-resonant optical cell (); applying a step function electrical pulse () to a semiconductor diode laser () to cause the laser () to output a continuous wavelength chirp for injecting () into the optical cell (); injecting () the wavelength chirp into the optical cell (); using the wavelength variation provided by the wavelength chirp as a wavelength scan, and detecting () light emitted from the cell (), wherein a chirp rate is selected to substantially prevent light interference occurring in the optical cell ().

Growing community of inventors

Stirling, United Kingdom

Erwan Normand