Abstract

An improved multipass Michelson interferometer is implemented. This technique uses the fact that the wavelength of a laser diode varies in proportion to the diode’s injection current. With this method the sensitivity augmentation is accomplished by inserting a beam splitter into one arm of the interferometer, resulting in multiple reflections between the end mirror and the beam splitter. In addition, the interference of laser beams reflected from two arms can be accomplished with unequal arms in the condition of a short coherence length. The sensitivity increase of interference fringes and the compensation of the short coherence length have been demonstrated in experiments.

© 1996 Optical Society of America

Coherence length modulation of a multimode laser diode in a dual Michelson interferometer configuration

Y. N. Ning, K. T. V. Grattan, A. W. Palmer, and B. T. Meggitt
Appl. Opt. 31(9) 1322-1327 (1992)

Tunable diode laser control by a stepping Michelson interferometer

A. Valentin, C. Nicolas, L. Henry, and Arlan W. Mantz
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Lionel R. Watkins and Maarten D. Hoogerland
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Signal extraction in a power-recycled Michelson interferometer with Fabry–Perot arm cavities by use of a multiple-carrier frontal modulation scheme

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