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

doi:10.1364/OE.15.017093

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)
http://dx.doi.org/10.1364/OE.15.017093

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Abstract

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.

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

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

Citation
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)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-15-25-17093

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References

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Y.Y. Lin, S.T. Lin, G.W. Chang, A.C. Chiang, Y.C. Huang and Y.H. Chen, "Electro-optic periodically poled lithium niobate Bragg modulator as a laser Q-switch," Opt. Lett. 32, 545-547 (2007). [CrossRef] [PubMed]
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