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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 24 — Nov. 23, 2009
  • pp: 21956–21968

High repetition rate dual-rod acousto-optics Q-switched composite Nd:YVO4 laser

Xingpeng Yan, Qiang Liu, Xing Fu, Hailong Chen, Mali Gong, and Dongsheng Wang  »View Author Affiliations


Optics Express, Vol. 17, Issue 24, pp. 21956-21968 (2009)
http://dx.doi.org/10.1364/OE.17.021956


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Abstract

We demonstrate the high-repetition rate acousto-optic Q-switching of a dual-rod Nd:YVO4 laser. Two thermally bonded composite YVO4-Nd:YVO4-YVO4 rod crystals were used as the gain medium to reduce the serious thermal effect. The pump mode and its influence on the laser mode were analyzed, and the effective pump radius was controlled by tuning the spectrum of laser diodes with adjustment on the temperature of laser diodes. Three different configurations of cavity optics were designed and the output performance using these cavities was investigated. In Q-switching operation, 73.2 W TEM00 mode average power at 650 kHz was obtained. The stable Q-switching range was from 80 kHz to 650 kHz with the pulse duration increasing from 17.5 ns to 80 ns. In CW operation, 78 W TEM00 mode and 93 W multi-mode output power was achieved with different cavity designs, corresponding to the optical-optical efficiency of 46.5% and 52.2% respectively.

© 2009 Optical Society of America

OCIS Codes
(140.3410) Lasers and laser optics : Laser resonators
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.3530) Lasers and laser optics : Lasers, neodymium
(140.3540) Lasers and laser optics : Lasers, Q-switched

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 14, 2009
Revised Manuscript: November 12, 2009
Manuscript Accepted: November 12, 2009
Published: November 16, 2009

Citation
Xingpeng Yan, Qiang Liu, Xing Fu, Hailong Chen, Mali Gong, and Dongsheng Wang, "High repetition rate dual-rod acousto-optics Q-switched composite Nd:YVO4 laser," Opt. Express 17, 21956-21968 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-24-21956


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