OPO CARS

coherent anti-Stokes Raman spectroscopy using tunable optical parametric oscillators injection-seeded by external-cavity diode lasers

G. W. Baxter, M. J. Johnson*, J. G. Haub, B. J. Orr

*Corresponding author for this work

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Coherent anti-Stokes Raman spectroscopy (CARS) is performed on nitrogen gas using the signal wave from a pulsed β-barium borate optical parametric oscillator (OPO), which has a passive ring cavity and is injection-seeded at its idler wavelength by a single-mode, external-cavity diode laser. The observed CARS linewidths are consistent with an optical bandwidth of 0.01 cm-1 for the continuously tunable OPO signal radiation. Moreover, injection seeding with two diode lasers generates two-line rovibrational CARS spectra giving thermometric information on a single-shot basis. The utility of these OPO CARS methods for combustion diagnostics is indicated.

Original languageEnglish
Pages (from-to)211-218
Number of pages8
JournalChemical Physics Letters
Volume251
Issue number3-4
DOIs
Publication statusPublished - 22 Mar 1996

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