This article is cited in 6 papers

Nonlinear optical phenomena and devices

High-efficiency parametric converter based on KTP crystals

V. L. Naumov^a, A. M. Onishchenko^a, A. S. Podstavkin^b, A. V. Shestakov<sup>a

a</sup> Polyus Research and Development Institute named after M. F. Stel'makh
^b "E.L.S.-94" Research and Production Center Ltd., Moscow

Abstract: A high-efficiency extracavity parametric oscillator based on KTP crystals for converting radiation of Nd³⁺:YAG lasers at 1.064 μm to radiation at 1.573 μm is made and its oscillation characteristics are studied. A differential efficiency of 56.5% and a threshold energy density of 0.06 J  cm^–2 were obtained. The angular divergence of parametric emission did not exceed four diffraction limits in a wide range of pump energies. The feasibility of stable operation for a more than 30-fold excess of pump energy over the threshold value was obtained.

PACS: 42.65.Yj, 42.70.Mp

Received: 23.02.2000

 English version: Quantum Electronics, 2000, 30:7, 632–634

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