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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 24 — Dec. 15, 2008
  • pp: 2955–2957

High-power, continuous-wave, second-harmonic generation at 532 nm in periodically poled K Ti O P O 4

G. K. Samanta, S. Chaitanya Kumar, M. Mathew, C. Canalias, V. Pasiskevicius, F. Laurell, and M. Ebrahim-Zadeh  »View Author Affiliations


Optics Letters, Vol. 33, Issue 24, pp. 2955-2957 (2008)
http://dx.doi.org/10.1364/OL.33.002955


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Abstract

We report efficient generation of high-power, cw, single-frequency radiation in the green in a simple, compact configuration based on single-pass, second-harmonic generation of a cw ytterbium fiber laser at 1064 nm in periodically poled K Ti O P O 4 . Using a crystal containing a 17 mm single grating with period of 9.01 μ m , we generate 6.2 W of cw radiation at 532 nm for a fundamental power of 29.75 W at a single-pass conversion efficiency of 20.8%. Over the entire range of pump powers, the generated green output is single frequency with a linewidth of 8.5 MHz and has a TEM 00 spatial profile with M 2 < 1.34 . The demonstrated green power can be further improved by proper thermal management of crystal heating effects at higher pump powers and also by optimized design of the grating period to include thermal issues.

© 2008 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(140.7300) Lasers and laser optics : Visible lasers
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4400) Nonlinear optics : Nonlinear optics, materials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: October 7, 2008
Manuscript Accepted: October 15, 2008
Published: December 5, 2008

Citation
G. K. Samanta, S. Chaitanya Kumar, M. Mathew, C. Canalias, V. Pasiskevicius, F. Laurell, and M. Ebrahim-Zadeh, "High-power, continuous-wave, second-harmonic generation at 532 nm in periodically poled KTiOPO4," Opt. Lett. 33, 2955-2957 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-24-2955


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References

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