Trace gas detection for small tunable laser spectrometer

摘要

The present invention is an open-path laser spectrometer for measuring the concentration of trace gas (OPLS), a first mirror, a second mirror, and these mirrors, the distance and is a direction from the first mirror arrangement and the analysis region of the multi-path open path having a support structure for, coupled to the analysis region of the multi-pass this open path, emitting light of a certain wavelength range, the emitted light first and second mirror a laser configured to be several times is reflected between, a detector coupled to the analysis region, and detects a portion of the emitted light impinging on the detector, configured to generate a corresponding signal and the detectors, along with being coupled to the laser and detector, the concentration of trace gas on the basis of the adjusted and the signal based on the signals generated a wavelength range of the emitted light from the laser It provides an open path laser spectrometer comprising an electronic system configured to measure.