Patent ID: 9671332
Date: 2017-06-06
CPC Classifications: G01N

Claim:
1. An open-path laser spectrometer for measuring a concentration of a trace gas, the open-path laser spectrometer comprising: an open-path multi-pass analysis region comprising a first mirror, a second mirror at a distance and orientation from the first mirror, and a support structure for locating the first and second mirrors; a laser coupled to the open-path multi-pass analysis region and configured to emit light of a wavelength range and to enable a plurality of reflections of the emitted light between the first and second mirrors; a detector coupled to the open-path multi-pass analysis region and configured to detect a portion of the emitted light interacting with the trace gas and impinging on the detector and to generate a return signal corresponding to a characteristic of the detected portion of the emitted light; and an electronic system coupled to the laser and the detector, wherein the electronic system: