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Optical fringe reduction technique for FM laser spectroscopyA simple fringe reduction method for FM diode laser spectroscopy is discussed. The fringes can be effectively suppressed by using a modulation frequency that is an integral multiple of the free spectral range of the fringes. The technique is experimentally confirmed by two-tone FM spectroscopy of water vapor absorption lines. A factor of 20 fringe reduction is observed.
Document ID
19900031122
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chou, Nee-Yin
(Science and Technology Corp. Hampton, VA, United States)
Sachse, Glen W.
(NASA Langley Research Center Hampton, VA, United States)
Wang, Liang-Guo
(College of William and Mary Williamsburg, VA, United States)
Gallagher, Thomas F.
(Virginia, University Charlottesville, United States)
Date Acquired
August 14, 2013
Publication Date
December 1, 1989
Publication Information
Publication: Applied Optics
Volume: 28
ISSN: 0003-6935
Subject Category
Lasers And Masers
Accession Number
90A18177
Distribution Limits
Public
Copyright
Other

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