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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 3 — Feb. 11, 2013
  • pp: 3715–3720

Third harmonic frequency generation by Type-I critically phase-matched LiB3O5 crystal by means of optically active quartz crystal

Valentin P. Gapontsev, Valentin A. Tyrtyshnyy, Oleg I. Vershinin, Boris L. Davydov, and Dmitri A. Oulianov  »View Author Affiliations


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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