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Proceedings Paper

Compact tunable midinfrared laser sources: technology and applications
Author(s): Frank K. Tittel; Konstantin P. Petrov; Steve B. Waltman; Robert F. Curl; Leo W. Hollberg
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Paper Abstract

Recent progress in design of diode-laser-pumped CW tunable narrowband mid-infrared sources based on difference-frequency generation (DFG) is addressed. Application of two such tunable sources to high-resolution spectroscopy and sensitive atmospheric trace detection of methane near 3.2 micrometers is reported. Methane detection limit in air of 12 ppb- m/(root)Hz is reported based upon the signal-to-noise ratio observed in the direct absorption spectra. Performance characteristics of these sources are examined including tuning range, phase matching bandwidth, output power, and amplitude stability. Applications of diode-laser-pumped CW tunable DFG may include atmospheric trace detection of several major hydrocarbons such as ethane, ethylene, and benzene, and toxic air pollutants such as carbon monoxide, nitric and nitrous oxide, sulfur dioxide, and methyl chloride.

Paper Details

Date Published: 11 April 1996
PDF: 10 pages
Proc. SPIE 2772, Laser Optics '95: Solid State Lasers, (11 April 1996); doi: 10.1117/12.238110
Show Author Affiliations
Frank K. Tittel, Rice Univ. (United States)
Konstantin P. Petrov, Rice Univ. (United States)
Steve B. Waltman, National Institute of Standards and Technology (United States)
Robert F. Curl, Rice Univ. (United States)
Leo W. Hollberg, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 2772:
Laser Optics '95: Solid State Lasers
Artur A. Mak; Vladimir I. Ustugov, Editor(s)

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