Direct measurement of CO2S-branch Raman linewidths broadened by O2, Ar, and C2H4 | Zendy

Naibo Jiang | Zendy; Sukesh Roy | Zendy; Paul S. Hsu | Zendy; James R. Gord | Zendy

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Direct measurement of CO₂S-branch Raman linewidths broadened by O₂, Ar, and C₂H₄

Author(s) -

Naibo Jiang,

Sukesh Roy,

Paul S. Hsu,

James R. Gord

Publication year - 2019

Publication title -

applied optics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.668

H-Index - 197

eISSN - 2155-3165

pISSN - 1559-128X

DOI - 10.1364/ao.58.000c55

Subject(s) - optics , materials science , raman spectroscopy , raman scattering , refractive index , physics

Direct measurements of CO 2 S -branch Raman coherence-decay lifetimes resulting from CO 2 - O 2 , CO 2 - Ar , and CO 2 - C 2 H 4 collisions by employing time-resolved picosecond rotational coherent anti-Stokes Raman scattering (CARS) spectroscopy are reported. Based on the measured Raman coherence dephasing rates, the corresponding Raman linewidths of various J levels are obtained. Our measured linewidth data will aid CO 2 CARS fitting, which is applied to the high-accuracy extraction of temperature and species concentration information from CARS spectra.

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