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. 2007 May 1;32(9):1177-9.
doi: 10.1364/ol.32.001177.

External cavity quantum cascade laser for quartz tuning fork photoacoustic spectroscopy of broad absorption features

Mark C Phillips  1 , Tanya L Myers, Michael D Wojcik, Bret D Cannon
Affiliations

External cavity quantum cascade laser for quartz tuning fork photoacoustic spectroscopy of broad absorption features

Mark C Phillips et al. Opt Lett. .

Abstract

We demonstrate mid-infrared spectroscopy of large molecules with broad absorption features using a tunable external cavity quantum cascade laser. Absorption spectra for two different Freons are measured over the range 1130-1185 cm(-1) with 0.2 cm(-1) resolution via laser photoacoustic spectroscopy with quartz tuning forks as acoustic transducers. The measured spectra are in excellent agreement with published reference absorption spectra.

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