反常大带宽声光偏转器  

Abnormal Acousto-optic Deflector With Large-bandwidth

作　　者：张泽红[1] 何晓亮[1] 

机构地区：[1]中国电子科技集团公司第二十六研究所,重庆400060

出　　处：《压电与声光》2016年第6期837-839,共3页Piezoelectrics & Acoustooptics

基　　金：国家重大资助项目

摘　　要：该文介绍了一种利用反常声光互作用原理制作的大带宽声光偏转器。该器件使用的声光互作用介质是磷化镓晶体,声波模式是横波,采用单片换能器结构,实现了带宽与衍射效率的合理兼顾。制作的大带宽声光偏转器样品的3dB带宽达1 040MHz,峰值衍射效率达20.4%@1W,这时中心频率为1.62GHz,光波长是633nm。This article introduces a kind of large-bandwidth acousto-optic deflector using the principle of abnormal acousto-optic interaction. This devise uses GaP crystal as the acousto-optic interacting medium and shear wave as the acoustic wave mode. Considering the trade-off between the bandwidth and the diffraction efficiency, it uses the structure of single chip transducer. The prepared sample of the large-bandwidth acousto-optic deflector has a 3 dB bandwidth of 1 040 MHz and a peak diffraction efficiency of 20.4%@1 W at the center frequency of 1.62 GHz and light wavelength of 633 nm.

关 键 词：反常声光互作用 声光偏转器 磷化镓 带宽(3dB) 衍射效率 光偏振态 

分 类 号：TN65[电子电信—电路与系统]