Influence of composition ratio on the nonlinear optical properties of AgGa1-xInxSe2 and Hg1-xCdxGa2S4

Guangjü Ji; Tao Shen; Jinjer Huang; Bo Zhao; Yu. M. Andreev; V. V. Atuchin; Gregory Lanskiy

doi:10.1117/12.726456

5 March 2007 Influence of composition ratio on the nonlinear optical properties of AgGa_1-xIn_xSe₂ and Hg_1-xCd_xGa₂S₄

Guangjü Ji, Tao Shen, Jinjer Huang, Bo Zhao, Yu. M. Andreev, V. V. Atuchin, Gregory Lanskiy

Proceedings Volume 6595, Fundamental Problems of Optoelectronics and Microelectronics III; 659514 (2007) https://doi.org/10.1117/12.726456
Event: Fundamental Problems of Optoelectronics and Microelectronics III, 2006, Harbin, China

Abstract

Mastering of the middle IR range is attractive for many applications, such as lidar gas analyzers, optoelectronic countermeasures for suppression of IR detecting, optical communication systems, and scientific and medical instrument. However, until now this has been held back by the lack of commercial coherent radiation sources with necessary energy parameters and efficiency. AgGa_1-xIn_xSe₂ and Hg_1-xCd_xGa₂S₄ are well-known middle IR crystal families introduced in recent years. The main advantage of them is that their physical properties including refractive indices and birefringence can be engineered by varying the contents of Ga, In, Cd and Hg. Consequently, the phase matching range can be extended and the 90° non-critical phase matching in three-wave interaction can be realized within a certain wavelength band. In consideration of influence of composition ratio, acceptable composition ratio and group velocity mismatch of ultra-short pulses on nonlinear properties of AgGa_1-xIn_xSe₂ and Hg_1-xCd_xGa₂S₄ are investigated for the first time. The corresponding phase-matching diagrams and spectral dependence of the acceptable composition ratio on wavelengths for second harmonic generation and optical parametric oscillation pumped by the popular Nd³⁺:YAG (1.06 &mgr;m) and Ho³⁺:ILF (2.08 &mgr;m) lasers are estimated and demonstrated with accounting of available Sellmeier coefficients. Group velocity matching for second harmonic, optical parametric generation under the pump of the two lasers in AgGa_1-xIn_xSe₂ and Hg_1-xCd_xGa₂S₄ are carried out as well. All relative results are compared and analyzed within a number of sampling values or continuum of composition ratios. In addition, the utilities of AgGa_1-xIn_xSe₂ and Hg_1-xCd_xGa₂S₄ for second harmonic generation are also discussed finally.

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Guangjü Ji, Tao Shen, Jinjer Huang, Bo Zhao, Yu. M. Andreev, V. V. Atuchin, and Gregory Lanskiy "Influence of composition ratio on the nonlinear optical properties of AgGa_1-xIn_xSe₂ and Hg_1-xCd_xGa₂S₄", Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 659514 (5 March 2007); https://doi.org/10.1117/12.726456

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