Hydrogen sensor based upon quadrupole absorption spectroscopy

摘要: The disclosure describes an absorption spectroscopy method for sensing hydrogen gas in a sample atmosphere and associated sensor. A light beam, having wavelength corresponding to vibrational transition of molecules from ground vibration state any excited rotational via quadrupole interaction, is introduced into optical cavity adapted receive be tested the presence gas. off-axis alignment systematically eliminate resonances, while preserving signal amplifying properties such cavities. Hydrogen measured terms output, as ICOS technique.