M-DLS MARTIAN MULTICHANNEL DIODE-LASER SPECTROMETER Russian patent published in 2020 - IPC G01N21/03 G01N21/3504 

FIELD: measurement.

SUBSTANCE: invention relates to the field of measurement equipment and concerns a Martian multichannel diode-and-laser spectrometer M-DLS. Spectrometer consists of analytical gas volume based on optical multi-pass cuvette, set of monochromatic diode lasers with distributed feedback with periodic tuning of optical frequency of probing radiation in a range covering individual oscillation-rotational absorption lines of a given molecule and its isotopologues, and a photodetector. Analytical gas volume used is an optical multi-pass cell of a full optical intracavity output, which is an optical resonator with a mirror reflection coefficient of not less than 0.999 and the number of effective full passes of the probing beam through the analytical gas volume of the cuvette, which increases the effective optical path to such a distance, at which precision measurements of chemical and isotopic composition of a dusty atmosphere are provided. Reference channel for stabilizing the radiation frequency of lasers based on selected absorption lines employs said optical multi-pass analytical gas cell.

EFFECT: technical result is higher sensitivity of device.

1 cl, 3 dwg, 1 tbl