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Results of investigations into the physical properties of a number of new nonlinear crystals are presented. The parameters of frequency converters manufactured on their basis are compared, and second-harmonic generation of CO2 lasers first excited by frequency conversion in LiInSe2, AgGa1– x
InxSe2, AgxGaxGexS2(1 + x), and Hg1–x
CdxGa2S4 crystals is investigated. The superiority of HgGa2S4, Hg1–x
CdxGa2S4, and AgGa1–x
InxSe2 over the well-known crystals has been demonstrated for frequency conversion both within the middle-IR range and from the visible range to the middle-IR range. Advantages of LiInSe2 and AgGa1–x
InxSe2 crystals are demonstrated for the direct frequency conversion of femtosecond laser radiation to the middle-IR range compared to the cascade frequency conversion and direct frequency conversion in LiInS2 crystals. 相似文献
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Nechaev A. P. Sultanovich Yu. A. Geiko N. S. Gramolin S. L. Zaitseva L. V. 《Chemistry of Natural Compounds》1985,21(3):307-309
The basic possibility of lowering the concentration of pancreatic lipase in the hydrolysis of triacylglycerols (TAGs) deposited on a solid sorbent has been shown. The method of preparing the initial TAGs for hydrolysis that has been developed permits not only a 10-fold reduction in the amount of ligase but also the retention of a short time of hydrolysis with a high yield of reaction products.Moscow Technological Institute of the Food Industry. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 329–332, May–June, 1985. 相似文献
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P. P. Geiko V. E. Privalov O. A. Romanovskii O. V. Kharchenko 《Optics and Spectroscopy》2010,108(1):80-85
Possibilities of using superbroadband nonlinear-optical frequency converters for femtosecond laser pulses in lidar sensing
of the atmosphere are analyzed. New biaxial nonlinear crystals in which the conditions of phase and group matching can be
satisfied simultaneously are basic elements of frequency converters. A technique for the broadband lidar sensing of the gas
composition of the atmosphere based on the differential optical atmospheric spectroscopy and the differential absorption methods
is described. The lidar sensing of gas constituents of the atmosphere using frequency converted femtosecond laser radiation
is simulated numerically. 相似文献
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Russian Physics Journal - The method of differential optical absorption spectroscopy is an effective tool for long (several hundred meters) path measurements of the integral concentration of... 相似文献
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Russian Physics Journal - 相似文献
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Investigation results on linear and non-linear optical properties, damage threshold and potential efficiencies of biaxial negative LiInS2 crystal are represented. It shows that the crystal has phase-matching and group-velocity matching in wide spectral range for second harmonic, sum- and difference-frequency generation of visible, near and middle IR lasers. The possibilities of designing middle IR optical parametric oscillator (OPO) pumped by Nd:YAG and dye lasers and specially possibility of frequency conversion with 3 um range femtosecond erbium lasers are given. 相似文献
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