Self-sustaining azimuthal polarization in a passively Q-switched Nd

GdVO4 laser with a Cr4+:YAG saturable absorber

Ken Chia Chang, Dong Lin Li, Ming-Dar Wei

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

An azimuthally polarized beam was generated in passively Q-switched Nd:GdVO4 lasers with a Cr 4 :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.

Original languageEnglish
Pages (from-to)382-386
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Volume31
Issue number2
DOIs
Publication statusPublished - 2014 Feb 1

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sustaining
yttrium-aluminum garnet
absorbers
cavities
lasing
rays
polarization
lasers
Q switched lasers
birefringence
repetition
pulse duration
pumps
configurations
crystals

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Statistical and Nonlinear Physics

Cite this

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abstract = "An azimuthally polarized beam was generated in passively Q-switched Nd:GdVO4 lasers with a Cr 4 :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.",
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Self-sustaining azimuthal polarization in a passively Q-switched Nd : GdVO4 laser with a Cr4+:YAG saturable absorber. / Chang, Ken Chia; Li, Dong Lin; Wei, Ming-Dar.

In: Journal of the Optical Society of America B: Optical Physics, Vol. 31, No. 2, 01.02.2014, p. 382-386.

Research output: Contribution to journalArticle

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