Résumé
We report Tunable Diode Laser Spectroscopy measurements of propane using a recently developed 3.37 μm GaInAsSb/AlGaInAsSb DFB laser. We have demonstrated that Wavelength Modulation Spectroscopy can be utilized to enhance a sharp feature in the broader propane spectrum around 3370.4 nm. A minimum detectable concentration of 30 ppb×m was obtained at a response time of 0.5 s. This corresponded to a minimum detectable absorption of 8 × 10 -5 which is why an improvement of the sensitivity by an order of magnitude is possible using this laser and a more optimized optical setup.
| langue originale | Anglais |
|---|---|
| Pages (de - à) | 183-188 |
| Nombre de pages | 6 |
| journal | Applied Physics B: Lasers and Optics |
| Volume | 108 |
| Numéro de publication | 1 |
| Les DOIs | |
| état | Publié - 1 juil. 2012 |
| Modification externe | Oui |
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