Abstract
A method is demonstrated that employs a Fabry–Perot etalon to modulate a broadband coherent anti-Stokes Raman spectroscopy signal beam spatially to obtain enhanced resolution and spectral information for single–shot measurements of pressure and temperature. Resulting images are analyzed by; first, fits to Fabry–Perot patterns for single rovibrational lines; second, a line-shape analysis for a single rovibrational line; and third, a mapping of the Fabry–Perot channel spectra to a linear spectrum. Measurements of the D2 Raman Q–branch lines were made for a D2 in Ar mixture to take advantage of the large pressure shift and rovibrational line spacing. Peaks are located to better than 0.5% of the free spectral range of the etalon (approximately 0.01 cm-1) and a quantitative analysis of the pressure shifting and broadening is determined for the 1–10-MPa range. Finally, temperature and pressure determination using a band-fitting analysis is demonstrated.
| Original language | English |
|---|---|
| Pages (from-to) | 534-544 |
| Number of pages | 11 |
| Journal | Applied Optics |
| Volume | 38 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1999 Jan 20 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering
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Broadband d2 coherent anti–stokes raman spectroscopy for single–shot pressure and temperature determination with a fabry–perot etalon. / Gillespie, Walter D.; Hahn, Jae Won; Bowers, Walter J.; Hurst, Wilbur S.; Rosasco, Gregory J.
In: Applied Optics, Vol. 38, No. 3, 20.01.1999, p. 534-544.Research output: Contribution to journal › Article
TY - JOUR
T1 - Broadband d2 coherent anti–stokes raman spectroscopy for single–shot pressure and temperature determination with a fabry–perot etalon
AU - Gillespie, Walter D.
AU - Hahn, Jae Won
AU - Bowers, Walter J.
AU - Hurst, Wilbur S.
AU - Rosasco, Gregory J.
PY - 1999/1/20
Y1 - 1999/1/20
N2 - A method is demonstrated that employs a Fabry–Perot etalon to modulate a broadband coherent anti-Stokes Raman spectroscopy signal beam spatially to obtain enhanced resolution and spectral information for single–shot measurements of pressure and temperature. Resulting images are analyzed by; first, fits to Fabry–Perot patterns for single rovibrational lines; second, a line-shape analysis for a single rovibrational line; and third, a mapping of the Fabry–Perot channel spectra to a linear spectrum. Measurements of the D2 Raman Q–branch lines were made for a D2 in Ar mixture to take advantage of the large pressure shift and rovibrational line spacing. Peaks are located to better than 0.5% of the free spectral range of the etalon (approximately 0.01 cm-1) and a quantitative analysis of the pressure shifting and broadening is determined for the 1–10-MPa range. Finally, temperature and pressure determination using a band-fitting analysis is demonstrated.
AB - A method is demonstrated that employs a Fabry–Perot etalon to modulate a broadband coherent anti-Stokes Raman spectroscopy signal beam spatially to obtain enhanced resolution and spectral information for single–shot measurements of pressure and temperature. Resulting images are analyzed by; first, fits to Fabry–Perot patterns for single rovibrational lines; second, a line-shape analysis for a single rovibrational line; and third, a mapping of the Fabry–Perot channel spectra to a linear spectrum. Measurements of the D2 Raman Q–branch lines were made for a D2 in Ar mixture to take advantage of the large pressure shift and rovibrational line spacing. Peaks are located to better than 0.5% of the free spectral range of the etalon (approximately 0.01 cm-1) and a quantitative analysis of the pressure shifting and broadening is determined for the 1–10-MPa range. Finally, temperature and pressure determination using a band-fitting analysis is demonstrated.
UR - http://www.scopus.com/inward/record.url?scp=0012104851&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0012104851&partnerID=8YFLogxK
U2 - 10.1364/AO.38.000534
DO - 10.1364/AO.38.000534
M3 - Article
C2 - 18305643
AN - SCOPUS:0012104851
VL - 38
SP - 534
EP - 544
JO - Applied Optics
JF - Applied Optics
SN - 1559-128X
IS - 3
ER -