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.
|Original language||English (US)|
|Number of pages||3|
|State||Published - May 1 2007|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics