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Third harmonic frequency generation by Type-I critically phase-matched LiB3O5 crystal by means of optically active quartz crystal |
Optics Express, Vol. 21, Issue 3, pp. 3715-3720 (2013)
http://dx.doi.org/10.1364/OE.21.003715
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Abstract
We present a method of third harmonic generation at 355 nm by frequency mixing of fundamental and second harmonic radiation of an ytterbium nanosecond pulsed all-fiber laser in a type-I phase-matched LiB3O5 (LBO) crystal where originally orthogonal polarization planes of the fundamental and second harmonic beams are aligned by an optically active quartz crystal. 8 W of ultraviolet light at 355 nm were achieved with 40% conversion efficiency from 1064 nm radiation. The conversion efficiency obtained in a type-I phase-matched LBO THG crystal was 1.6 times higher than the one achieved in a type-II LBO crystal at similar experimental conditions. In comparison to half-wave plates traditionally used for polarization alignment the optically active quartz crystal has much lower temperature dependence and requires simpler optical alignment.
© 2013 OSA
OCIS Codes
(140.3610) Lasers and laser optics : Lasers, ultraviolet
(190.2620) Nonlinear optics : Harmonic generation and mixing
(060.3510) Fiber optics and optical communications : Lasers, fiber
ToC Category:
Nonlinear Optics
History
Original Manuscript: December 11, 2012
Revised Manuscript: January 22, 2013
Manuscript Accepted: January 22, 2013
Published: February 6, 2013
Citation
Valentin P. Gapontsev, Valentin A. Tyrtyshnyy, Oleg I. Vershinin, Boris L. Davydov, and Dmitri A. Oulianov, "Third harmonic frequency generation by Type-I critically phase-matched LiB3O5 crystal by means of optically active quartz crystal," Opt. Express 21, 3715-3720 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-3-3715
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References
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