Abstract

The characteristics of parametric light generators with intracavity pumping by the radiation of a garnet laser with a passive shutter have been experimentally investigated. The conversion efficiency of laser radiation with a wavelength of λ_p=1.064μm strongly depends on the characteristics of the phototropic shutter. When a radiation-colored LiF crystal with initial transmittance T₀=0.25 is used in a parametric generator based on a potassium titanyl phosphate crystal at a wavelength of λ_s=1.91μm, a radiation energy of up to 10 mJ and a quantum efficiency of radiation conversion of H_q≈0.6 are achieved. When a YAG:Cr⁴⁺ shutter with T₀=0.5 was used, the maximum radiation energy of the parametric generator was 5 mJ, while the conversion efficiency was H_q≈0.3-0.4. In a parametric generator based on potassium titanyl arsenate crystal with λ_s=1.55μm, the radiation energies corresponding to these shutters were about 7.5 and 5 mJ, while H_q≈0.4-0.6 and 0.25-0.4, respectively.

© 2009 Optical Society of America

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Author Affiliations

A. F. Abyshev, V. I. Afonin, A. V. Berezin, A. F. Ivanov, N. V. Korepanov, A. V. Lukin, L. É. Magda, G. N. Rykovanov

Russian Federal Nuclear Center--E. I. Zababakhin All-Russia Scientific Research Institute of Technical Physics

D. I. Dmitriev, V. N. Pasunkin, V. S. Sirazetdinov, A. D. Starikov

Scientific Research Institute for Comprehensive Testing of Optoelectronic Devices and Systems

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