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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 2 — Feb. 1, 2014
  • pp: 382–386

Self-sustaining azimuthal polarization in a passively Q-switched Nd:GdVO4 laser with a Cr4+:YAG saturable absorber

Ken-Chia Chang, Dong-Lin Li, and Ming-Dar Wei  »View Author Affiliations

JOSA B, Vol. 31, Issue 2, pp. 382-386 (2014)

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An azimuthally polarized beam was generated in passively Q-switched Nd:GdVO4 lasers with a Cr4+:YAG saturable absorber. Based on the birefringence of the laser crystal inducing the different equivalent lengths for the ordinary and extraordinary rays, stable ordinary ray lasing can be achieved when the cavity configuration is operated around the edge of a stable cavity region. Because the laser is directly obtained from a general cavity without adding an intracavity element, the azimuthally polarized beam is the intrinsic lasing mode of the passively Q-switched laser system. The degree of polarization can be controlled up to 97.9%±0.7%, and the pulse width, repetition frequency, and peak power were 74.8 ns, 17.0 kHz, and 850 W at the pump power of 6.1 W, respectively.

© 2014 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3540) Lasers and laser optics : Lasers, Q-switched
(140.3580) Lasers and laser optics : Lasers, solid-state

ToC Category:
Lasers and Laser Optics

Original Manuscript: October 9, 2013
Revised Manuscript: December 20, 2013
Manuscript Accepted: December 21, 2013
Published: January 29, 2014

Ken-Chia Chang, Dong-Lin Li, and Ming-Dar Wei, "Self-sustaining azimuthal polarization in a passively Q-switched Nd:GdVO4 laser with a Cr4+:YAG saturable absorber," J. Opt. Soc. Am. B 31, 382-386 (2014)

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