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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 33 — Nov. 20, 1998
  • pp: 7789–7796

Thermal compensation of a cw-pumped Nd:YAG laser

James Sherman  »View Author Affiliations


Applied Optics, Vol. 37, Issue 33, pp. 7789-7796 (1998)
http://dx.doi.org/10.1364/AO.37.007789


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Abstract

Thermally induced lensing and birefringence modify the transverse laser profile and may eliminate any global polarization state in systems utilizing Nd:YAG as a gain medium. This creates fundamental difficulties in obtaining a high-power, polarized output beam. Although abundant literature exists regarding thermal lensing, only one birefringence compensation scheme is prevalent in the literature. A modification of this scheme is given that eliminates residual birefringence. Experimental data verify the model’s validity. A theoretical model is then presented that modifies the birefringence-compensated amplifier as a single power-dependent lens. After showing that solutions exist for a power-independent resonator consisting of a power-dependent lens between two flat mirrors, this amplifier is inserted into the resonator solution to produce, to first order, a resonator that is insensitive to thermally induced fluctuations in the rod focal length.

© 1998 Optical Society of America

OCIS Codes
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.6810) Lasers and laser optics : Thermal effects
(260.1440) Physical optics : Birefringence

History
Original Manuscript: March 23, 1998
Revised Manuscript: August 14, 1998
Published: November 20, 1998

Citation
James Sherman, "Thermal compensation of a cw-pumped Nd:YAG laser," Appl. Opt. 37, 7789-7796 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-33-7789

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