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Proceedings Paper

Efficient CO2 frequency doubling with Hg1-xCdxGa2S4
Author(s): Deming Ren; Jinzhe Huang; Xiaoyong Hu; Yanchen Qu; Yuri M. Andreev; Pavel P. Geiko; Valerii V. Badikov
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Paper Abstract

As it is known well, using of frequency doubling in differential absorption CO2 laser lidars increases the number of atmospheric gases under the control. Additional improvement in potential and gas analyses accuracy, technical and exploitation parameters has to be waited for with design of frequency doublers with more efficient nonlinear crystals. In this work for the first time detailed investigation results are represented on physial properties of new mixed nonlinear crystals grown in accordance with diagram HgGa2S4:CdGa2S4→Hg1-xCdxGa2S4, phase-matching and potential efficiencies of second harmonic generation, so as on results of experimental investigation of TEA and mini TEA CO2 laser frequency doubling with it use. In spite of two time lower nonlinear susceptibility coefficients of both parent crystals in comparison with most efficient middle IR crystals high efficiency of frequency doubling is fixed in mixed crystals at room temperature. It is tree time in comparison with frequency doubling with, for example, popular ZnGeP2 and 5.5 time with AgGaSe2. These advantages are reached because realization of optimal non-critical phase-matching by choose of mixing ratio x=0.5, so as 2.3 time higher damage threshold, lower phonon absorption at CO2 laser wavelengths and lower meanings of refractive indexes at fundamental and second harmonic wavelengths. Exploitation parameters of mixed Hg1-xCdxGa2S4 crystal doublers are not worse than parameters of doublers with well-known crystals.

Paper Details

Date Published: 23 February 2004
PDF: 7 pages
Proc. SPIE 5397, Tenth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics. Part II: Laser Sensing and Atmospheric Physics, (23 February 2004); doi: 10.1117/12.548598
Show Author Affiliations
Deming Ren, Harbin Institute of Technology (China)
Jinzhe Huang, Harbin Institute of Technology (China)
Xiaoyong Hu, Harbin Institute of Technology (China)
Yanchen Qu, Harbin Institute of Technology (China)
Yuri M. Andreev, Institute for Optical Monitoring (Russia)
Pavel P. Geiko, Institute for Optical Monitoring (Russia)
Valerii V. Badikov, Kuban State Univ. (Russia)

Published in SPIE Proceedings Vol. 5397:
Tenth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics. Part II: Laser Sensing and Atmospheric Physics
Gennadii G. Matvienko; Georgii M. Krekov, Editor(s)

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