Studies on the wideband design of acousto-optic deflector using lithium niobate crystal  

作　　者：杨婧 高艳磊 李洁 杨振军 庞兆广 

机构地区：[1]College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050024, China

出　　处：《Chinese Optics Letters》2014年第A02期100-103,共4页中国光学快报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China （Nos. 11374089 and 61308016）, the Nature Science Foundation of Hebei Province （Nos. A2012205085, F2012205076, and A2012205023）, and the Key Project of Hebei Education Department （No. ZD20131014）.

摘　　要：We present theoretical studies on the wideband design of bulk lithium niobate （LN） acousto-optic deflector （AOD） through the walk-off design of the ultrasonic vector, which satisfies the momentum match condition. The ultrasonic properties of LN crystal are studied by solving the Christopher equation and the reciprocal velocity curves in the operating planes XOZ and YOZ are systematically obtained. The calculation results show that the bandwidth of the AOD is highly dependent on the incident angle of light beam and the velocity of the ultrasonic waves, which show strict linear properties in the operating bandwidth. Furthermore, the dependence of the central frequency of the AOD on the angle of incident light and the ultrasonic velocity are also analyzed.We present theoretical studies on the wideband design of bulk lithium niobate （LN） acousto-optic deflector （AOD） through the walk-off design of the ultrasonic vector, which satisfies the momentum match condition. The ultrasonic properties of LN crystal are studied by solving the Christopher equation and the reciprocal velocity curves in the operating planes XOZ and YOZ are systematically obtained. The calculation results show that the bandwidth of the AOD is highly dependent on the incident angle of light beam and the velocity of the ultrasonic waves, which show strict linear properties in the operating bandwidth. Furthermore, the dependence of the central frequency of the AOD on the angle of incident light and the ultrasonic velocity are also analyzed.

分 类 号：TN65[电子电信—电路与系统] O734.1[理学—晶体学]