Methane Sensing with a Novel Micromachined. Single-Frequency Fabry?Perot Laser Diode. Emitting at 1331 nm.
Item Type:Journal Article
Citation:V. Weldon, J. O?Gorman, J. J. P'erez-Camacho, D. McDonald, J. Hegarty, and B. Corbett, Methane Sensing with a Novel Micromachined. Single-Frequency Fabry?Perot Laser Diode. Emitting at 1331 nm., IEEE Photonics Technology Letters, 9, 3, 1997, 357, 359
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Spectroscopic-based gas sensing is demonstrated using micromachined single-frequency Fabry-Perot (FP) laser diodes emitting at 1.331 ?m with a side mode suppression ratio of greater than 24 dB over a significant emission wavelength tuning range. The utility of these novel mode controlled FP lasers for spectroscopic detection of gases is assessed by investigating the methane-absorption band in the 1.33 ?m region. By probing the narrow linewidth R2 rotational absorption line, we demonstrate a low gas detection limit of 28 ppm?m and confirm the suitability of micromachined lasers in such applications.
Author: HEGARTY, JOHN
Type of material:Journal Article
Series/Report no:IEEE Photonics Technology Letters
Availability:Full text available