Frequency doubling and mixing of the radiation of carbon monoxide lasers in nonlinear ZnGeP2 and GaSe crystals

Андреев Ю.М., Зуев В.В., Ионин А.А., Киняевский И.О., Климачёв Ю.М., Козлов А.Ю., Котков А.А., Ланский Г.В., Шайдуко А.В. Удвоение и смешение частот излучения лазеров на монооксиде углерода в нелинейных кристаллах ZnGeP2 и GaSe // Оптический журнал. 2011. Т. 78. № 2. С. 26–29.

Andreev Yu.M., Zuev V.V., Ionin A.A., Kinyaevskiy I.O., Klimachyov Yu.M., Kozlov A.Yu., A.A. Kotkov, Lanskiy G.V., Shayduko A.V. Frequency doubling and mixing of the radiation of carbon monoxide lasers in nonlinear ZnGeP2 and GaSe crystals [in Russian] // Opticheskii Zhurnal. 2011. V. 78. № 2. P. 26–29.

Yu. M. Andreev, A. A. Ionin, I. O. Kinyaevskiĭ, V. V. Zuev, G. V. Lanskiĭ, Yu. M. Klimachëv, A. Yu. Kozlov, A. V. Shaĭduko, and A. A. Kotkov, "Frequency doubling and mixing of the radiation of carbon monoxide lasers in nonlinear ZnGeP2 and GaSe crystals," Journal of Optical Technology. 78(2), 102-104 (2011). https://doi.org/10.1364/JOT.78.000102

Frequency doubling of the radiation of selective and nonselective carbon monoxide lasers in nonlinear ZnGeP2 and GaSe crystals has been experimentally investigated. An internal frequency-conversion efficiency as high as 7% has been obtained, with enrichment of the spectrum of the converted frequencies due to the parallel process of sum-frequency generation. The possibility is discussed of using the methods of nonlinear crystal optics to create a broad-range coherent-radiation source in the mid-IR and terahertz ranges of the spectrum, based on carbon monoxide lasers.

The authors are thankful to FTP NNPIR as part of the state contract Nos. 02.740.11.0444, НШ-4297.2010.2 and Project VII.63.3.1 of Programme VII.63.3 of the Siberian Branch of RAS and also to Educational and scientific complex of Lebedev Physical Institute of RAS for partial financial support.