Optical gas monitor
Abstract
A frequency modulated spectroscopy system, including a photo-detector, a band-pass filter to filter the output of the photo-detector, and a rectifier to demodulate. The band-pass filter has a relatively high Q factor. With the high Q factor band-pass filter and rectifier, a reference sinusoid is not required for demodulation, resulting in phase-insensitive spectroscopy. Other embodiments are described and claimed.
- Inventors:
-
- San Gabriel, CA
- Pasadena, CA
- Escondido, CA
- Walnut, CA
- Issue Date:
- Research Org.:
- California Institute of Technology (CalTech), Pasadena, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1014721
- Patent Number(s):
- 7843565
- Application Number:
- US Patent Application 11/807,538
- Assignee:
- California Institute of Technology (Pasadena, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- FC26-04NT42212
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Wu, Sheng, Deev, Andrei, Palm, Steve L, Tang, Yongchun, and Goddard, William A. Optical gas monitor. United States: N. p., 2010.
Web.
Wu, Sheng, Deev, Andrei, Palm, Steve L, Tang, Yongchun, & Goddard, William A. Optical gas monitor. United States.
Wu, Sheng, Deev, Andrei, Palm, Steve L, Tang, Yongchun, and Goddard, William A. Tue .
"Optical gas monitor". United States. https://www.osti.gov/servlets/purl/1014721.
@article{osti_1014721,
title = {Optical gas monitor},
author = {Wu, Sheng and Deev, Andrei and Palm, Steve L and Tang, Yongchun and Goddard, William A},
abstractNote = {A frequency modulated spectroscopy system, including a photo-detector, a band-pass filter to filter the output of the photo-detector, and a rectifier to demodulate. The band-pass filter has a relatively high Q factor. With the high Q factor band-pass filter and rectifier, a reference sinusoid is not required for demodulation, resulting in phase-insensitive spectroscopy. Other embodiments are described and claimed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {11}
}
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