Chinese Optics Letters, 2003, 1 (8): 08462, Published Online: Jun. 6, 2006
Spatial soliton by cascading χ^((2)) effect and its self-induced wave-guide in quasi-phase-matched media 
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Abstract
The formation of the spatial solitons in the quadratic nonlinearity χ^((2)) media by cascading second harmonic generation (SHG) in quasi-phase-matched (QPM) sample is studied on the basis of nonlinear Schrodinger equation (NLSE). When the solitary wave propagates in the QPM media, it formed optical wave-guides through cascading χ^((2)) effect called self-induced soliton wave-guide. Transverse refractive index distribution of the self-induced soliton wave-guide of fundamental and SHG wave is obtained by cascading process. Analysis of guided-mode of such self-induced soliton wave-guide is first proposed to our knowledge. Because the power needed for forming the spatial solitons in cascading process is much lower than that inKerr media, this kind of self-induced soliton wave-guide shows potential applications in all-optical signal process.
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Kezhu Hong, Xianfeng Chen, Guangqie Gao, Yingli Chen. Spatial soliton by cascading χ^((2)) effect and its self-induced wave-guide in quasi-phase-matched media[J]. Chinese Optics Letters, 2003, 1(8): 08462.
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