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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 20 — Oct. 15, 2010
  • pp: 3513–3515

Multicrystal, continuous-wave, single-pass second-harmonic generation with 56% efficiency

G. K. Samanta, S. Chaitanya Kumar, Kavita Devi, and M. Ebrahim-Zadeh  »View Author Affiliations


Optics Letters, Vol. 35, Issue 20, pp. 3513-3515 (2010)
http://dx.doi.org/10.1364/OL.35.003513


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Abstract

We report a simple and compact implementation for single-pass second-harmonic-generation (SP-SHG) of cw laser radiation, based on a cascaded multicrystal (MC) scheme, that can provide the highest conversion efficiency at any given fundamental power. By deploying a suitable number of identical 30-mm-long MgO:sPPLT crystals in a cascade and a 30 W cw Yb-fiber laser at 1064 nm as the fundamental source, we demonstrate SP-SHG into the green with a conversion efficiency as high as 56% in the low-power as well as the high-power regime, providing 5.6 W of green output for 10 W and 13 W of green output for 25.1 W of input pump power. The MC scheme permits substantial increase in cw SP-SHG efficiency compared to the conventional single-crystal scheme without compromising performance with regard to power stability and beam quality.

© 2010 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:
Nonlinear Optics

History
Original Manuscript: August 5, 2010
Revised Manuscript: September 19, 2010
Manuscript Accepted: September 22, 2010
Published: October 15, 2010

Citation
G. K. Samanta, S. Chaitanya Kumar, Kavita Devi, and M. Ebrahim-Zadeh, "Multicrystal, continuous-wave, single-pass second-harmonic generation with 56% efficiency," Opt. Lett. 35, 3513-3515 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-20-3513


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