压电与声光, 2020, 42 (6): 757, 网络出版: 2022-04-21
宽带声光器件声场仿真研究
Study on Acoustic Field Simulation of Broadband Acousto-optical Devices
摘要
该文根据亥姆霍兹-基尔霍夫积分定理, 建立了两片矩形换能器在声光晶体中的声场分布模型, 并利用MATLAB数值模拟中心频率为100 MHz的矩形换能器在氧化碲晶体中的声场分布, 实现声场可视化。结果表明, 与单片换能器声场分布相比, 两片换能器的结构使声光器件的布喇格带宽增大了11 MHz。仿真结果为理解声场变化和试验结果提供了理论依据。
Abstract
According to the Helmholtz-Kirchoff integration theorem, the acoustic field distribution models of two rectangular transducers in acousto-optic crystal are established in this paper. The acoustic field of rectangular transducers with center frequency of 100 MHz in the tellurium dioxide crystal is simulated numerically and visualized by means of MATLAB. The results show that compared with the acoustic field distribution of the single transducer, the Bragg bandwidth of the acousto-optic device is increased by 11 MHz using the structure of the two transducers. The simulation results can be a theoretical basis for understanding the acoustic field change produced in testing medium and judgment for testing performance.
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吴中超, 唐诗, 吴畏, 高维松, 朱吉, 王智林. 宽带声光器件声场仿真研究[J]. 压电与声光, 2020, 42(6): 757. WU Zhongchao, TANG Shi, WU Wei, GAO Weisong, ZHU Ji, WANG Zhilin. Study on Acoustic Field Simulation of Broadband Acousto-optical Devices[J]. Piezoelectrics & Acoustooptics, 2020, 42(6): 757.
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