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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 24 — Dec. 15, 2009
  • pp: 3836–3838

Broadband, high-power, continuous-wave, mid-infrared source using extended phase-matching bandwidth in MgO:PPLN

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


Optics Letters, Vol. 34, Issue 24, pp. 3836-3838 (2009)
http://dx.doi.org/10.1364/OL.34.003836


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Abstract

We report a compact and viable source of broadband, high-power, cw, mid-IR radiation based on a singly resonant optical parametric oscillator (SRO) pumped by a wide-bandwidth cw Yb fiber laser centered at 1060 nm . By exploiting the extended phase-matching bandwidth in a 50 mm crystal of MgO:PPLN and a ring SRO cavity, we obtain 5.3 W of broadband idler output for 25.5 W of pump at > 80 % depletion, transferring a pump bandwidth of 73.9 cm 1 to an idler spectrum spread across an equal bandwidth centered at 3454 nm . By deploying output coupling of the signal, we generate 11.2 W of total power at 44% extraction efficiency with a pump depletion of > 73 % at the maximum available pump power. Measurements of transverse modal power confirm Gaussian distribution of signal and idler beams.

© 2009 Optical Society of America

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Nonlinear Optics

History
Original Manuscript: August 19, 2009
Revised Manuscript: November 2, 2009
Manuscript Accepted: November 11, 2009
Published: December 9, 2009

Citation
Ritwick Das, S. Chaitanya Kumar, G. K. Samanta, and M. Ebrahim-Zadeh, "Broadband, high-power, continuous-wave, mid-infrared source using extended phase-matching bandwidth in MgO:PPLN," Opt. Lett. 34, 3836-3838 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-24-3836


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