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Optics Express

Optics Express

  • Vol. 17, Iss. 7 — Mar. 30, 2009
  • pp: 5636–5644

183 W TEM00 mode acoustic-optic Q-switched MOPA laser at 850 kHz

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

Optics Express, Vol. 17, Issue 7, pp. 5636-5644 (2009)

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We report a high-power, high-repetition-rate TEM00 mode MOPA laser using acoustic-optic Q-switching. Seed laser from the dual-end-pumped Nd:YVO4 oscillator was scaled up to 183.5 W average power at 850 kHz after behind amplified by the four-stage power amplifiers. The stable Q-switching operation worked at different pulse repetition rate from 60 kHz to 850 kHz while the pulse duration increased from 12.8 ns to 72 ns. The beam quality was near diffraction-limit with M2 factors measured as M2 x = 1.28 and M2 y = 1.21. In CW operation, 195 W TEM00 mode output was achieved corresponding to the total optical-optical efficiency of 44.7% and the absorbed pump power to output power efficiency of 53.3% respectively.

© 2009 Optical Society of America

OCIS Codes
(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

Original Manuscript: January 6, 2009
Revised Manuscript: March 20, 2009
Manuscript Accepted: March 21, 2009
Published: March 25, 2009

Qiang Liu, Xingpeng Yan, Xing Fu, Mali Gong, and Dongsheng Wang, "183 WTEM00 mode acoustic-optic Q-switched MOPA laser at 850 kHz," Opt. Express 17, 5636-5644 (2009)

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