超声跟踪反常声光偏转器优化设计  

Optimum Design of Anisotropic Acousto-optic Device With Beam Steering Theory

作　　者：庞兆广[1] 俞宽新[2] 

机构地区：[1]河北师范大学物理科学与信息工程学院,石家庄050016 [2]北京工业大学应用数理学院,北京100022

出　　处：《北京工业大学学报》2007年第8期892-896,共5页Journal of Beijing University of Technology

基　　金：北京市教育委员会基金(05006111200101).

摘　　要：以超声跟踪反常声光器件的设计思想为基础,讨论了超声跟踪LiNbO_3反常声光器件的设计思路和具体方法.对平面结构和阶梯结构2种情况下超声跟踪LiNbO_3声光器件的优化设计进行了系统的研究和计算.结果表明,利用超声跟踪方法可以实现反常声光器件的优化设计,能获得较宽的带宽以及更高的衍射效率.同时,阶梯结构一级超声跟踪可以有效提高超声波的能量利用率.In this paper, ways to design LiNbO3 anisotropic acousto-optic device based on beam steering theory are studied. The accurate design parameters for plane configuration and step configuration are systematically calculated. The result shows that anisotropic acousto-optic device using LiNbO3 crystal can realize optimum design with beam steering theory; it can gain wide 3 db bandwidth and high diffractive efficiency simultaneously. The research also shows that acousto-optic device designed in step configuration gains a higher energy utilization ratio comparing with that of the plane configuration.

关 键 词：超声跟踪 声光效应 声光偏转器 LINBO3 

分 类 号：TN65[电子电信—电路与系统]