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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 12 — Jun. 15, 2010
  • pp: 1986–1988

High-power, continuous-wave, optical parametric oscillator pumped by an optically pumped semiconductor laser at 532 nm

G. K. Samanta and M. Ebrahim-Zadeh  »View Author Affiliations

Optics Letters, Vol. 35, Issue 12, pp. 1986-1988 (2010)

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We report a high-power, cw, single-frequency optical parametric oscillator pumped external to an optically pumped semiconductor laser (OPSL). The singly resonant oscillator (SRO), based on a 30 mm crystal of MgO:sPPLT, is pumped by a 6 W , cw OPSL at 532 nm . By deploying signal outcoupling and loose focusing in the presence of low pump power, we achieve significant improvements in SRO performance across the tuning range with regard to signal power, extraction efficiency, and pump depletion by reducing thermal effects. We generate > 1.78 W of idler and > 0.9 W of signal over 856 1404 nm while maintaining a total output power of > 2 W over 93% of the tuning range at an extraction efficiency of 48.7% and pump depletion of 84%. The signal power remains within 0.85 1.05 W across the entire tuning range and has a TEM 00 spatial profile with M 2 < 1.28 and circularity of > 97 % . Measurements of signal spectrum confirm single-frequency performance with an instantaneous linewidth of 15 MHz and frequency stability better than 60 MHz over 60 s .

© 2010 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Nonlinear Optics

Original Manuscript: February 25, 2010
Revised Manuscript: April 22, 2010
Manuscript Accepted: May 14, 2010
Published: June 7, 2010

G. K. Samanta and M. Ebrahim-Zadeh, "High-power, continuous-wave, optical parametric oscillator pumped by an optically pumped semiconductor laser at 532 nm," Opt. Lett. 35, 1986-1988 (2010)

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