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Light-beat method to process phase fluctuations of a laser light beam

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Abstract

A method for real-time processing of phase fluctuations of a laser beam is described. A beat photocurrent whose phase undergoes random fluctuations is generated by two laser beams at different frequencies, propagating through a turbulent atmosphere. The phase fluctuation component of the beat can be recovered in real-time over a wide range of phase angle, not restricted within 2π, by a specially designed circuit. Probability density functions, autocorrelation functions, and variances of the phase fluctuations are displayed in real-time as most basic quantities of the fluctuations.

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Visiting Fellow at Department of Electronics, The University of Southampton, England, October 1974–September 1975.

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Ohtsuka, Y., Sasaki, I. Light-beat method to process phase fluctuations of a laser light beam. Appl. Phys. 7, 265–270 (1975). https://doi.org/10.1007/BF00900322

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  • DOI: https://doi.org/10.1007/BF00900322

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