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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 8 — Apr. 15, 2010
  • pp: 1118–1120

High-efficiency semi-external-cavity-structured periodically poled MgLN-based optical parametric oscillator with output power exceeding 9.2 W at 3.82 μ m

Bo Wu, Jian Kong, and Yonghang Shen  »View Author Affiliations

Optics Letters, Vol. 35, Issue 8, pp. 1118-1120 (2010)

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We report a high-efficiency and high-power mid-IR laser generation by a periodically poled (PP) MgLN-based optical parametric oscillator (OPO) working at room temperature, from which 9.23 W of output was obtained at 3.82 μ m when pumped by a linearly polarized acousto-optic Q-switched Nd : Y V O 4 laser of 48.2 W output. A semi-external-cavity structure was applied in the OPO system to avoid the conversion saturation caused by the thermal lens effect of the PPMgLN crystal and thus to maintain the high conversion efficiency and the high beam quality under the high power level. It was computed that 29.4% slope efficiency and 19.2% total efficiency were realized for the 1.063 3.82 μ m conversion.

© 2010 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3460) Lasers and laser optics : Lasers
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 11, 2010
Revised Manuscript: March 2, 2010
Manuscript Accepted: March 8, 2010
Published: April 2, 2010

Bo Wu, Jian Kong, and Yonghang Shen, "High-efficiency semi-external-cavity-structured periodically poled MgLN-based optical parametric oscillator with output power exceeding 9.2 W at 3.82 μm," Opt. Lett. 35, 1118-1120 (2010)

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