超声驻波布喇格调制器零级光衍射效率的计算及其应用

Calculation and application of zero order optical diffraction efficiancy for ultrasonic standing wava Bragg modulator

本文给出了驻波布喇格调制器零级光衍射效率η_0(Δφm)和η_0(M_0)的两个解析式,由此得到了η_0-Δφm和M_0-η_0两条关系曲线。只要用光功率计测出零级光衍射效率η_0,就能由M_0-η_0曲线得到其调制度的大小。

Two analytic formulas ηo（△Фm） and ηo（Mo） of zero order light diffraction efficiency of standing wave Bragg modulator are given in this articte. According to the two formulas two relative curves of ηo-△Фm and Mo-ηo are obtalned. The value of degree of modalatioa can be obtained by Mo-ηo curve so fong as the optical diffraction efficiencyηo has been measured by using a light dynamometer.