Picosecond time-resolved pure-rotational coherent anti-Stokes Raman spectroscopy for N2 thermometry

被引：55

作者：

Seeger, Thomas ^{[2
,3
]}

Kiefer, Johannes ^{[2
,3
]}

Leipertz, Alfred ^{[2
,3
]}

Patterson, Brian D. ^{[1
]}

Kliewer, Christopher J. ^{[1
]}

Settersten, Thomas B. ^{[1
]}

机构：

[1] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA

[2] Univ Erlangen Nurnberg, Lehrstuhl Tech Thermodynam, D-91058 Erlangen, Germany

[3] Univ Erlangen Nurnberg, Erlangen Grad Sch Adv Opt Technol SAOT, D-91058 Erlangen, Germany

来源：

OPTICS LETTERS | 2009年 / 34卷 / 23期

关键词：

SCATTERING THERMOMETRY; CARS; NITROGEN; AIR;

D O I：

10.1364/OL.34.003755

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Time-resolved pure-rotational coherent anti-Stokes Raman spectroscopy using picosecond-duration laser pulses is investigated for gas thermometry. The use of picosecond laser pulses significantly reduces background caused by scattering of the probe beam, and delayed probing of the Raman coherence enables elimination of interference from nonresonant four-wave mixing processes. Temperatures inferred from rotational spectra are sensitive to the probe delay because of the rotational-level dependence of collisional dephasing of Raman coherences. The sensitivity decreases, however, with increasing temperature, and accurate temperature measurements in a flame are demonstrated using a standard frequency-domain analysis of the spectra. (C) 2009 Optical Society of America

引用

页码：3755 / 3757

页数：3

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