一、前言波片是物理光学中最基本和常用的光学元件之一,一般由双折射材料制作。其光轴处于通光面上,当寻常光与非常光的延迟数等于R(=μ(λ)d/λ)时,称为R波片。对各种晶体其双折射率μ都是波长的函数,一般随波长增加而减小,所以对R波片,双折射晶片厚度 I. Introduction Wave plate is one of the most basic and commonly used optical elements in physical optics, and is generally made of birefringent material. Its optical axis is in the light-transmitting surface, when the ordinary light and extraordinary light delay equal to R (= μ (λ) d / λ), known as R wave plate. The birefringence μ of all kinds of crystals is a function of the wavelength, which generally decreases as the wavelength increases, so for R wave plate, birefringent wafer thickness