Stimulated Raman rotational photoacoustic spectroscopy using a quartz tuning fork and femtosecond excitation
| Autor: | Ilya Sh. Averbukh, Yaron Silberberg, Wolfgang Schade, E. Gershnabel, Jörg Burgmeier, Ulrike Willer, Ori Katz, Wolfgang Schippers |
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| Rok vydání: | 2011 |
| Předmět: |
Photoacoustic effect
Materials science Physics and Astronomy (miscellaneous) business.industry Physics::Medical Physics General Engineering Physics::Optics General Physics and Astronomy law.invention symbols.namesake Optics law Excited state Femtosecond symbols Rotational spectroscopy Tuning fork Raman spectroscopy business Photoacoustic spectroscopy Excitation |
| Zdroj: | Applied Physics B. 105:203-211 |
| ISSN: | 1432-0649 0946-2171 |
| Popis: | Molecular alignment of linear molecules (O2, N2, CO2 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. |
| Databáze: | OpenAIRE |
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