Multi-pass cell-assisted photoacoustic/photothermal spectroscopy of gases using quantum cascade laser excitation and heterodyne interferometric signal detection
Journal Article
·
· Applied Physics. B, Lasers and Optics
A heterodyne interferometer-based signal retrieval in photoacoustic/photothermal gas spectrometer using mid-infrared quantum cascade laser excitation is demonstrated. This new method for all-optical photoacoustic/photothermal signal detection allows for sensitivity enhancement using standard multi-pass cells, commonly used in absorption-based spectrometers. Two types of multi-pass cell are examined: a Herriott type with up to 33 passes and a White type with up to 46 passes. Good agreement between experimental results and numerical analysis is obtained.
- Research Organization:
- Princeton Univ., NJ (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FE0029059
- OSTI ID:
- 1432130
- Alternate ID(s):
- OSTI ID: 1545788
- Journal Information:
- Applied Physics. B, Lasers and Optics, Journal Name: Applied Physics. B, Lasers and Optics Vol. 124 Journal Issue: 5; ISSN 0946-2171
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- Germany
- Language:
- English
Cited by: 26 works
Citation information provided by
Web of Science
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