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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 8 — Apr. 13, 2009
  • pp: 6053–6058

Effect of gain anisotropy on low-frequency dynamics in four-level solid-state lasers

Jong-Dae Park, Aaron MKay, and Judith M. Dawes  »View Author Affiliations

Optics Express, Vol. 17, Issue 8, pp. 6053-6058 (2009)

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Our anisotropic rate equation model outlines the relationship between the relaxation dynamics in a four-level solid-state laser and its anisotropic gain properties. Anisotropic pump rates and stimulated emission cross-sections were included to account for specific atom orientations in the gain material. The model is compared with experimental measurements of two relaxation oscillation frequencies which are related to the anisotropic atom-laser interaction in orthogonally polarized dual-mode lasers. The model predicts that crystal orientation and pump polarization affect the laser operation characteristics, as found experimentally. The gain anisotropy influences the fast laser dynamics, as in single-mode relaxation oscillations.

© 2009 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 27, 2009
Revised Manuscript: March 15, 2009
Manuscript Accepted: March 27, 2009
Published: March 31, 2009

Jong-Dae Park, Aaron M. McKay, and Judith M. Dawes, "Effect of gain anisotropy on low-frequency dynamics in four-level solid-state lasers," Opt. Express 17, 6053-6058 (2009)

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Fig. 1. Fig. 2. Fig. 3.

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