菱体型消色差延迟器的优化设计

通过对菱体型延迟器件进行优化设计,能够改善其消色差性。根据光在介质表面全反射时发生相变这一原理,分析了一个具有3个全内反射面的菱体型延迟器件,得出了相位延迟δ与全内反射角θ和相位延迟δ与介质折射率n的关系。通过对δ与θ和δ与n的关系分析,显示了扩大材料选择范围的可行性。结果表明,较大的全内反射角的选择有利于改善延迟器件的消色差性。

Optimal design of rhomb-type achromatism retarder

Optimal design of rhomb-type retarder can improve achromatism according to the principle that the light arising total reflection has a phase transformation in the medium surface. A rhomb-type retarder with three total reflection faces is analyzed and the relations between phase delay δ and angle of total reflection θ,phase delay δ and medium refractive index n are deduced. Through analyzing relation between δ and θ,δ and n,it is shown that the material selecting scope can be extended and that the bigger angle of total reflection can improve ebromatism of the delay device.