NDLI: Possibilities and experimental investigation of parametric frequency converters with LiInSe/sub 2/, AgGaGeS/sub 4/, HgGa/sub 2/S/sub 4/ and Hg/sub 0.65/Cd/sub 0.35/Ga/sub 2/S/sub 4/ crystals

Content Provider	IEEE Xplore Digital Library
Author	Andreev, Yu.M. Badikov, V.V. Geiko, P.P. Efimenko, V.V. Efimenko, T.D. Ivaschenko, M.V. Karapuzikov, A.I. Panyutin, V.L. Sherstov, I.V.
Copyright Year	2002
Description	Author affiliation: Inst. for Opt. Monitoring, SB RUS, Tomsk, Russia (Andreev, Yu.M.)
Abstract	Second harmonic generation of 9 /spl mu/m emission band of CO/sub 2/ laser is for the first time realized with a number of new nonlinear crystals: biaxial LiInSe/sub 2/, AgGaGeS/sub 4/ (that is solid solution AgGaS/sub 2/:GeS/sub 2/ or Ag/sub x/Ga/sub x/Ge/sub (1-x)/S/sub 2/, or AgGaGe/sub x/S/sub 2(1+x)/ at x=0.5) and uniaxial HgGa/sub 2/S/sub 4/, Cd/sub 0.35/Hg/sub 0.65/Ga/sub 2/S/sub 4/ (solid solution HgGa/sub 2/S/sub 4/:CdGa/sub 2/S/sub 4/ with mixing ratio x=0.35). For LiInSe/sub 2/ and AgGaGeS/sub 4/ it is first type of frequency conversion realized at some time or other. The main feature of these crystals is a wide range transparency from 0.4-0.6 to 12.5-16.2 /spl mu/m. Their damage thresholds for 30 ns TEA CO/sub 2/ laser pulses at 9.55 /spl mu/m is determined as 1.7 to 2.3 times higher than for popular middle IR crystals such as ZnGeP/sub 2/ or AgGaSe/sub 2/. Parameters of second harmonic generation were determined correctly in comparison with ZnGeP/sub 2/ crystals at 33 ns pump pulses and intensities that are about 28.5% (40 MW/cm/sup 2/) of damage thresholds of ZnGeP/sub 2/. As high as 7% external peak power efficiencies (4.7% in energy) is typical for orange and yellow phases of 3.1 mm HgGa/sub 2/S/sub 4/ crystal such pumping that is only 13% of its damage threshold. Efficiencies as high as 0.45% and 0.3% are realized in 2.1 mm AgGaGeS/sub 4/ crystal at pump intensities-that is only 11% of the damage threshold. Phase-matching angles, spectral dependence of second harmonic generation efficiencies, and angular and spectral phase-matching widths are investigated in detail.
Starting Page	303
Ending Page	306
File Size	281263
Page Count	4
File Format	PDF
ISBN	0780374274
DOI	10.1109/KORUS.2002.1028025
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-06-24
Publisher Place	Russia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency conversion Crystals Optical harmonic generation Optical frequency conversion Nonlinear optics Optical pumping Physics Solids Lattices Optical mixing
Content Type	Text
Resource Type	Article

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