应用多光子非线性Compton散射模型和耦合非线性薛定谔方程,研究了Compton散射下光折变晶体中的孤子传输特性,结果表明,光折变晶体热透镜效应的实质,是晶体内形成的光孤子与空间电荷场中的孤子传输与耦合的过程,其耦合特性不仅与两波导中的孤子的相对相位有关,而且与Compton散射有关.两波导中的孤子的相对相位相同或相反,散射都会使它们之间发生能量交换和交换能量的周期发生变化,从而使形成的孤子的轮廓变得模糊.即使光沿着晶体的光轴方向传输,也有发生双折射的可能性.
The propagation properties of the soliton in the photorefractive crystal under Compton scattering were studied by using the model of multi-photon nonlinear Compton scattering and nonlinear Schrodinger's equation. The result shows that the essence of the heat-lens effect in the photorefractive crystalis a result of the propagation and coupling of the crystal soliton and space charge field soliton. The coupling properties have the relation with not only the relative phase of the solitons in the two wave guides, but also Compton scattering. When the relative phase of the soliton is same or opposite, the energy change and its cycle change between the two solitons taken place by Compton scattering. Therefore, the overall of the soliton formed by Compton scattering is fuzzy. If the soliton propagation is along with the optic axis direction,then, the birefraction induced by Compton scattering is possible.
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