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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 2, Iss. 8 — Aug. 1, 1985
  • pp: 1320–1326

Residual amplitude modulation in laser electro-optic phase modulation

Edward A. Whittaker, Manfred Gehrtz, and Gary C. Bjorklund  »View Author Affiliations


JOSA B, Vol. 2, Issue 8, pp. 1320-1326 (1985)
http://dx.doi.org/10.1364/JOSAB.2.001320


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Abstract

An important practical limitation to the sensitivity of frequency-modulation spectroscopy arises because of imperfect phase modulation of the laser beam. This imperfection manifests itself as residual amplitude modulation (RAM), and we present data from a careful series of experiments designed to elucidate its origin. Experimentally, we find two components to the RAM, one that depends for its intensity on the laser frequency and one that does not. We present a model that correctly accounts for the intensity and rf phase and frequency behavior of the laser-frequency-dependent component. We are unable to offer a plausible explanation for the laser-frequency-independent component.

© 1985 Optical Society of America

History
Original Manuscript: January 21, 1985
Manuscript Accepted: March 25, 1985
Published: August 1, 1985

Citation
Edward A. Whittaker, Manfred Gehrtz, and Gary C. Bjorklund, "Residual amplitude modulation in laser electro-optic phase modulation," J. Opt. Soc. Am. B 2, 1320-1326 (1985)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-2-8-1320

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