Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/59849
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Type: Journal article
Title: Portable fiber-coupled diode-laser-based sensor for multiple trace gas detection
Author: Lancaster, D.
Richter, D.
Tittel, F.
Citation: Applied Physics B: Lasers and Optics, 1999; 69(5-6):459-465
Publisher: Springer-Verlag
Issue Date: 1999
ISSN: 0946-2171
1432-0649
Statement of
Responsibility: 
D.G. Lancaster, D. Richter and F.K. Tittel
Abstract: Tunable narrowband mid-infrared radiation from 3.25 to 4:4 mm is generated by a compact fiber-coupled, difference-frequency-based spectrosopic source. A 20-mW external cavity diode laser (with a tuning range from 814 to 870 nm) and a 50-mW distributed-Bragg-reflector diode-laser- seeded ytterbium-doped fiber amplifier operating at 1083 nm are difference-frequency mixed in a multi-grating, temperature-controlled periodically poled LiNbO3 crystal. A conversion efficiency of 0:44mW/(W₂cm) (corresponding to a power of ≈3 μW at 3:3 μm) represents the highest conversion efficiency reported for a portable device. Performance characteristics of such a sensor and its application to spectroscopic detection of CO2, N2O, H2CO, HCl, NO2, and CH4 will be reported in this work.
Rights: Copyright Springer-Verlag 1999
DOI: 10.1007/s003400050835
Published version: http://dx.doi.org/10.1007/s003400050835
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