Abstract
We show that it is possible to identify the chemical composition of an aerosol by using Fourier-transform spectroscopy of backscattered mid-infrared light at a range of 0.2 m. An ultrafast mid-infrared optical parametric oscillator provides the illumination source for the measurement across a wavelength range from 3.2-3.55 μm containing characteristic optical absorption features for two different chemicals. Normalized detection sensitivity below 10 ppm m-1 Hz-12 is obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 2266-2269 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 41 |
| Issue number | 10 |
| Early online date | 10 May 2016 |
| DOIs | |
| Publication status | Published - 15 May 2016 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics