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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 10 — May. 15, 2009
  • pp: 1561–1563

Stable, 9.6 W, continuous-wave, single-frequency, fiber-based green source at 532 nm

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


Optics Letters, Vol. 34, Issue 10, pp. 1561-1563 (2009)
http://dx.doi.org/10.1364/OL.34.001561


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Abstract

We present a stable, high-power, cw, single-frequency green source in a compact and practical design based on a simple single-pass second-harmonic generation of a cw ytterbium fiber laser at 1064 nm in MgO-doped periodically poled stoichiometric LiTaO 3 . Using a 30-mm-long crystal containing a single grating, we have generated 9.64 W of cw radiation at 532 nm with a fundamental power of 29.5 W at a single-pass conversion efficiency of 32.7%. The output power is naturally stable with a peak-to-peak fluctuation of 7.6% over the first 8 h and 9% over 13 h. Over the entire range of fundamental powers, the generated green output is single frequency with an instantaneous linewidth of 6.5 MHz and frequency stability of < 32 ‚ÄČ MHz over 30 min and has a TEM 00 spatial profile with M 2 < 1.33 .

© 2009 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: January 7, 2009
Revised Manuscript: April 3, 2009
Manuscript Accepted: April 6, 2009
Published: May 12, 2009

Citation
G. K. Samanta, S. Chaitanya Kumar, and M. Ebrahim-Zadeh, "Stable, 9.6 W, continuous-wave, single-frequency, fiber-based green source at 532 nm," Opt. Lett. 34, 1561-1563 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-10-1561

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