NASA NTRS · 19900031122
Optical fringe reduction technique for FM laser spectroscopy
Abstract
A 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.
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Chou, Nee-Yin, Sachse, Glen W., Wang, Liang-Guo, Gallagher, Thomas F.. 1989-12-01. Optical fringe reduction technique for FM laser spectroscopy. https://ntrs.nasa.gov/citations/19900031122
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