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NONLINEAR TOTALLY REFLECTING PRISM COUPLER - THERMOMECHANIC EFFECTS AND INTENSITY-DEPENDENT REFRACTIVE INDEX OF THIN FILMS

机译:非线性全反射棱镜耦合器-薄膜的热力学效应和强度相关的折射率

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摘要

Starting with an accurate linear electromagnetic theory of a totally reflecting prism coupled to a dielectric waveguide, we implement a numerical technique to take into account optogeometric perturbations in stratified media. We calculate both the reflected fields in intensity on the prism base (near field) and in infinity (far field) for an incident Gaussian beam. The study of the variations of the intensity in the reflected beam (near and far fields) versus light power shows thermoinduced dilation of the prism and an intensity-dependent refractive index of thin films composed of tantalium pentoxyde and titanium dioxide. [References: 23]
机译:从耦合到介质波导的全反射棱镜的精确线性电磁理论开始,我们实现了一种数值技术,以考虑分层介质中的光学几何扰动。我们计算入射高斯光束在棱镜基础上的反射场强度(近场)和在无限远处的反射场(远场)。对反射光束(近场和远场)强度随光功率变化的研究表明,棱镜引起的热膨胀和由五氧化二钽和二氧化钛构成的薄膜的强度相关折射率。 [参考:23]

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