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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 31, Iss. 24 — Aug. 20, 1992
  • pp: 5034–5037

Polarization-stabilized 1.15- and 3.39-μm He–Ne lasers

M-L. Junttila and A. S. Pine  »View Author Affiliations


Applied Optics, Vol. 31, Issue 24, pp. 5034-5037 (1992)
http://dx.doi.org/10.1364/AO.31.005034


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Abstract

Two methods for polarization stabilization of an internal-mirror 3.39-μm He–Ne laser are reported. The first relies on a concurrently lasing 1.15-μm transition by fixing the relative amplitude of two orthogonally polarized longitudinal modes that are split by a Rochon prism and detected with separate Si photodiodes. In the second method, two spatially separated orthogonally polarized adjacent 3.39-μm modes are optically balanced, differentially chopped, and recombined on a single InSb photodiode for phase-sensitive detection. The dual-wavelength scheme has been tested by beating against a methane-stabilized 3.39-μm He–Ne laser, which yields maximum excursions of < 0.5 MHz over several hours and comparable reproducibility. The polarization-stabilized He–Ne laser has been used as a reference for a tunable color-center laser molecular-beam optothermal spectrometer and provides a precision of better than 2 MHz.

© 1992 Optical Society of America

History
Original Manuscript: October 31, 1991
Published: August 20, 1992

Citation
M-L. Junttila and A. S. Pine, "Polarization-stabilized 1.15- and 3.39-μm He–Ne lasers," Appl. Opt. 31, 5034-5037 (1992)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-31-24-5034

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