Stimulated Raman rotational photoacoustic spectroscopy using a quartz tuning fork and femtosecond excitation

W. Schippers, E. Gershnabel, J. Burgmeier, O. Katz, U. Willer, I. S. Averbukh, Y. Silberberg, W. Schade*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Molecular alignment of linear molecules (O 2, N 2, CO 2 and CO) is measured photoacoustically in the gas phase. The rotational excitation is accomplished using a simple femtosecond stimulated Raman excitation scheme, employing two femtosecond pulses with variable delay between the pulses. Molecular alignment is determined directly by measuring the energy dumped into the gas by quartz-enhanced photoacoustic spectroscopy (QEPAS), utilizing a quartz tuning fork as a sensitive photoacoustic transducer. The experimental results demonstrate for the first time the use of a tuning fork for resonant photoacoustic detection of Raman spectra excited by femtosecond double pulses and match both simulation and literature values.

Original languageAmerican English
Pages (from-to)203-211
Number of pages9
JournalApplied Physics B: Lasers and Optics
Volume105
Issue number2
DOIs
StatePublished - Nov 2011
Externally publishedYes

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