Tunable diode laser absorption spectroscopy: Recent findings and novel approaches

Year: 1996

Authors: Werle P.

Autors Affiliation: Fraunhofer Inst. Atmospharische U., Kreuzeckbahnstr. 19, 82467 Garmisch-Partenkirchen, Germany

Abstract: Some limitations of tunable diode laser spectroscopy caused by laser noise, drifts and general interferometric effects are discussed together with novel signal processing strategies to cope with stability problems. The importance of fast switching between ambient and background measurements is emphasized and the application of additional sample modulation is proposed to improve system performance for trace gas analysis.

Journal/Review: INFRARED PHYSICS & TECHNOLOGY

Volume: 37 (1)      Pages from: 59  to: 66

KeyWords: Gases; Interferometers; Light modulation; Optical variables measurement; Semiconductor lasers; Signal processing; System stability, In situ measurements; Interferometric effects; Trace gas analysis; Tunable diode laser absorption spectroscopy, Spectroscopy
DOI: 10.1016/1350-4495(95)00113-1

Citations: 38
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