Journal
OPTICS LETTERS
Volume 32, Issue 9, Pages 1177-1179Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.32.001177
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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. (c) 2007 Optical Society of America.
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