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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 24 — Dec. 15, 2012
  • pp: 5049–5051

High-power, continuous-wave, single-frequency, all-periodically-poled, near-infrared source

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


Optics Letters, Vol. 37, Issue 24, pp. 5049-5051 (2012)
http://dx.doi.org/10.1364/OL.37.005049


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Abstract

We report a high-power, single-frequency, continuous-wave (cw) source tunable across 775–807 nm in the near-infrared, based on internal second harmonic generation (SHG) of a cw singly-resonant optical parametric oscillator (OPO) pumped by a Yb-fiber laser. The compact, all-periodically-poled source employs a 48-mm-long, multigrating MgO doped periodically poled lithium niobate (MgO:PPLN) crystal for the OPO and a 30-mm-long, fan-out grating MgO-doped stoichiometric periodically poled lithium tantalate (MgO:sPPLT) crystal for intracavity SHG, providing as much as 3.7 W of near-infrared power at 793 nm, together with 4 W of idler power at 3232 nm, at an overall extraction efficiency of 28%. Further, the cw OPO is tunable across 3125–3396 nm in the idler, providing as much as 4.3 W at 3133 nm with >3.8W over 77% of the tuning range together with >3W of near-infrared power across 56% of SHG tuning range, in high-spatial beam-quality with M2<1.4. The SHG output has an instantaneous linewidth of 8.5 MHz and exhibits a passive power stability better than 3.5% rms over more than 1 min.

© 2012 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.7220) Nonlinear optics : Upconversion

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 27, 2012
Revised Manuscript: October 24, 2012
Manuscript Accepted: November 5, 2012
Published: December 5, 2012

Citation
Kavita Devi, S. Chaitanya Kumar, and M. Ebrahim-Zadeh, "High-power, continuous-wave, single-frequency, all-periodically-poled, near-infrared source," Opt. Lett. 37, 5049-5051 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-24-5049


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