FM-to-AM conversion for angular filtering based on transmitted volume Bragg gratings(TBGs)is discussed.Simulation results show that a narrower spectral selectivity of TBGs led to stronger FM-to-AM conversion.Good angu...FM-to-AM conversion for angular filtering based on transmitted volume Bragg gratings(TBGs)is discussed.Simulation results show that a narrower spectral selectivity of TBGs led to stronger FM-to-AM conversion.Good angular selectivity and a wide bandwidth for the TBGs can be obtained by controlling the grating period and thickness.FM-to-AM conversion can be effectively suppressed and the distortion criterion for the filtered beam reduces to less than 5%.FMto-AM conversion of TBGs is demonstrated in the’Shenguang’ facility,and the results are in good agreement with the simulation.展开更多
基金supported by the National Key R&D Program of China(No.2016YFF0100903)National Natural Science Foundation of China(NSFC)(Nos.61775153,61705153,and 11504255)Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
文摘FM-to-AM conversion for angular filtering based on transmitted volume Bragg gratings(TBGs)is discussed.Simulation results show that a narrower spectral selectivity of TBGs led to stronger FM-to-AM conversion.Good angular selectivity and a wide bandwidth for the TBGs can be obtained by controlling the grating period and thickness.FM-to-AM conversion can be effectively suppressed and the distortion criterion for the filtered beam reduces to less than 5%.FMto-AM conversion of TBGs is demonstrated in the’Shenguang’ facility,and the results are in good agreement with the simulation.
