A large and tunable lateral shift in a prism coupling system with a superconducting YBa 2 Cu 3 O 7 film is theoretically analyzed. The dip of the reflectivity and magnitude of the lateral shift can be controlled by the temperature of the superconducting film. The sign of the lateral shift can be determined by the thickness of the superconducting film. The position of the minimum reflection and maximum Goos–Hänchen shift can be conveniently adjusted by the thickness of the dielectric layer and incident light frequency. The largest shift, as high as 1550 times the free space wavelength, is achieved for the incident light frequency $$\omega = 98$$ ω = 98 THz. The numerical calculation results from the Gaussian beam are in accordance with the theoretical results.

中文翻译：

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包含超导板的棱镜耦合系统中的大可调横向位移

理论上分析了具有超导 YBa 2 Cu 3 O 7 膜的棱镜耦合系统中的大且可调谐的横向位移。反射率的下降和横向位移的幅度可以通过超导膜的温度来控制。横向偏移的符号可以由超导薄膜的厚度确定。最小反射和最大 Goos-Hänchen 位移的位置可以通过介电层的厚度和入射光频率方便地调整。对于入射光频率 $$\omega = 98$$ ω = 98 THz，实现了最大位移，高达自由空间波长的 1550 倍。高斯光束的数值计算结果与理论结果一致。