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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 25 — Dec. 10, 2007
  • pp: 17093–17098

Monolithically integrated laser Bragg Q-switch and wavelength converter in a PPLN crystal

S. T. Lin, G.W. Chang, Y.Y. Lin, Y.C. Huang, A.C. Chiang, and Y.H. Chen  »View Author Affiliations

Optics Express, Vol. 15, Issue 25, pp. 17093-17098 (2007)

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We report a periodically poled lithium niobate (PPLN) crystal for both temperature-insensitive laser Q-switching and temperature-tuned wavelength conversion. The PPLN crystal consists of two sections, a 20.3-µm period section functioning as an electro-optic Bragg grating for Q-switching a diode-pumped Nd:YVO4 laser at 1064 nm and a 31-µm-period section functioning as an optical parametric generator for down converting the generated 1064-nm laser. When driving the PPLN Bragg grating with 170-V voltage pulses, we measured 181 µJ pulse energy at 1064 nm from the Nd:YVO4 laser pumped by 20.4 W diode power. The 181-µJ pulsed laser was further converted into mid-infrared radiation in the monolithic PPLN crystal with 35% parametric efficiency. The wavelengths were broadly tunable in the range of 1.75–1.88 µm (signal) and 2.7–2.44 µm (idler) via temperature without affecting the performance of the PPLN Bragg Qswitch.

© 2007 Optical Society of America

OCIS Codes
(140.3540) Lasers and laser optics : Lasers, Q-switched
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(230.2090) Optical devices : Electro-optical devices

ToC Category:
Lasers and Laser Optics

Original Manuscript: October 24, 2007
Revised Manuscript: November 25, 2007
Manuscript Accepted: November 28, 2007
Published: December 5, 2007

S. T. Lin, G. W. Chang, Y. Y. Lin, Y. C. Huang, A. C. Chiang, and Y. H. Chen, "Monolithically integrated laser Bragg Q-switch and wavelength converter in a PPLN crystal," Opt. Express 15, 17093-17098 (2007)

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