Abstract
A spectrometer, based on the frequency down-chirped radiation from a pulsed quantum-cascade laser, capable of detecting fluctuations in local ground level methane and nitrous oxide concentrations over a time scale of minutes, is presented. The applicability of this instrument to low-level atmospheric detection is demonstrated through sampling gases in two locations.
Original language | English |
---|---|
Pages (from-to) | 243-249 |
Number of pages | 6 |
Journal | Applied Physics B: Lasers and Optics |
Volume | 85 |
Issue number | 2-3 |
DOIs | |
Publication status | Published - 2006 |
Keywords
- lasers
- optics
- photonics
- plasmas
- methane
- troposphere
- applied physics