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.
Original language | English (US) |
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Pages (from-to) | 1177-1179 |
Number of pages | 3 |
Journal | Optics letters |
Volume | 32 |
Issue number | 9 |
DOIs | |
State | Published - May 1 2007 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics