Patent ID: 11867623
Assignee: ABB SCHWEIZ AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A cavity enhanced absorption spectroscopy (CEAS) system, comprising:
a gas cell enclosed by a first mirror on one end of the gas cell and a second mirror on the other end of the gas cell to form a cavity therein; and
a plurality of optical component sub-units, each respective optical component sub-unit including at least a collimator and mounting hardware, wherein the collimator operates to direct a respective laser beam into the cavity having an initial beam size less than 3 millimeters in diameter, wherein each optical component sub-unit is associated with a laser beam of a different wavelength, and wherein the plurality of optical component sub-units are disposed in locations offset from each other in a direction away from a central axis of the gas cell, so that the plurality of laser beams directed by the plurality of optical component sub-units into the cavity are offset from each other in the direction away from the central axis of the gas cell.