Polarization Induced Noise In Acousto-Optic (AO) Modulation Of Internal Mirror He-Ne Laser Beams

J. A. Duardo; W. F. Hug; J. A. Lucero

doi:10.1117/12.958643

10 September 1980 Polarization Induced Noise In Acousto-Optic (AO) Modulation Of Internal Mirror He-Ne Laser Beams

J. A. Duardo, W. F. Hug, J. A. Lucero

Proceedings Volume 0222, Laser Scanning and Recording for Advanced Image and Data Handling; (1980) https://doi.org/10.1117/12.958643
Event: 1980 Technical Symposium East, 1980, Washington, D.C., United States

Abstract

A number of investigations have been performed at XEOS for the purposes of: (1) characterizing the time-dependent polarization states of the 632.8 nm output beam of internal mirror He-Ne lasers, and (2) evaluating the effect of beam polarization on the Bragg diffraction efficiency of an AO modulator. The results of these two lines of investigation have suggested that, under certain circumstances, extraneous fluctuations or noise can be induced in the diffracted beam by polarization fluctuations of the laser beam. It is the purpose of this report to define the conditions under which polarization induced noise is produced, to evaluate the magnitudes of these effects, and to suggest practical methods by which polarization noise can be eliminated.

Citation Download Citation

J. A. Duardo, W. F. Hug, and J. A. Lucero "Polarization Induced Noise In Acousto-Optic (AO) Modulation Of Internal Mirror He-Ne Laser Beams", Proc. SPIE 0222, Laser Scanning and Recording for Advanced Image and Data Handling, (10 September 1980); https://doi.org/10.1117/12.958643

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KEYWORDS

Polarization

Mirrors

Modulators

Adaptive optics

Helium neon lasers

Acousto-optics

Modulation

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