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Optics Letters

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  • Vol. 28, Iss. 6 — Mar. 15, 2003
  • pp: 441–443

Broadly tunable noncritically phase-matched ZnGeP2 optical parametric oscillator with a 2-μJ pump threshold

K. L. Vodopyanov and P. G. Schunemann  »View Author Affiliations


Optics Letters, Vol. 28, Issue 6, pp. 441-443 (2003)
http://dx.doi.org/10.1364/OL.28.000441


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Abstract

We report a high-repetition-rate (1–10-kHz) optical parametric oscillator (OPO) based on noncritically phase-matched ZnGeP2 (ZGP).The pump source was an OPO based on periodically pole lithium niobate that was pumped in turn by a Q-switched diode-pumped 1-μm Nd:YAG laser. The ZGP OPO yielded continuously tunable output from 3.7 to 10.2μm by tuning of the pump wavelength from 2.3 to 3.7μm . At the optimal pump focusing, the minimum ZGP OPO threshold achieved was 2μJ, which is to our knowledge the lowest ever reported for a singly resonant OPO.The output energy in the 6–8-μ m range was >20μJ, and the quantum efficiency of converting 1-μm radiation to the mid IR exceeded 10%.

© 2003 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

Citation
K. L. Vodopyanov and P. G. Schunemann, "Broadly tunable noncritically phase-matched ZnGeP2 optical parametric oscillator with a 2-μJ pump threshold," Opt. Lett. 28, 441-443 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-6-441

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