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Yb fiber laser pumped mid-IR source based on difference frequency generation and its application to ammonia detectionA Yb fiber laser pumped cw narrow-linewidth tunable mid-IR source based on a difference frequency generation (DFG) in a periodically poled LiNbO3 (PPLN) crystal for trace gas detection was demonstrated. A high power Yb fiber laser and a distributed feedback (DFB) laser diode were used as DFG pump sources. This source generated mid-IR at 3 microns with a powers of ~2.5 microW and a spectral linewidth of less than 30 MHz. A frequency tuning range of 300 GHz (10 cm-1) was obtained by varying the current and temperature of the DFB laser diode. A high-resolution NH3 absorption Doppler-broadened spectrum at 3295.4 cm-1 (3.0345 microns) was obtained at a cell pressure of 27 Pa from which a detection sensitivity of 24 ppm m was estimated.
Document ID
20040088686
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Matsuoka, N.
(School of Science, Tokai University Kanagawa 259-162, Japan)
Yamaguchi, S.
Nanri, K.
Fujioka, T.
Richter, D.
Tittel, F. K.
Date Acquired
August 21, 2013
Publication Date
February 1, 2001
Publication Information
Publication: Japanese journal of applied physics
Volume: 40 Pt 1
Issue: 2A
ISSN: 0021-4922
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Environmental Health
Non-NASA Center

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