Patent · US Active

Simultaneous integrated cavity output spectroscopy and ringdown measurements for the detection of broad band absorbing gas species

US10782228B2 · kind B2 · utility

0Cited by

2References

25Claims

0Family size

Assignee

ABB Schweiz AG · CH

Inventors

J. Brian Leen · Sunnyvale, US
Axel Kramer · Greifswald, DE
Xu Du · Beijing, CN

Key dates

Filing date	Nov 1, 2017
Grant date	Sep 22, 2020
Priority date	—
Expiry date	Oct 23, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG01N2021/399
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Systems and methods for measuring a value of constituents in a mixed constituent gas having at least one broad band absorber constituent therein and at least one lock constituent are provided. The system uses a combination of integrated cavity output spectroscopy and cavity ringdown spectroscopy to determine the measurement values of constituents in a cavity of a spectrometer. Cavity ringdown in the presence of the at least one broadband absorber constituent and a reference concentration value are used to determine the constituent measurement values when the spectral width of the laser tuning range is overlapped by the absorption band of the broad band absorber in the cavity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.