Analytical model of an acoustic diode comprising a superlattice and a nonlinear medium  

作　　者：顾仲明 梁彬 程建春 

机构地区：[1]Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Nanjing University

出　　处：《Chinese Physics B》2013年第1期318-321,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 10904068, 10834009, 11174138, and 11174139);the Research Fund for the Doctoral Program (for new scholar) of Higher Education of China (Grant No. 20100091120039);the Priority Academic Program Development of Jiangsu Higher Education Institutions, China

摘　　要：We give an analytical analysis to the acoustic propagation in an acoustic diode （AD） model formed by coupling a superlattice （SL） with a nonlinear medium. Analytical solutions of the acoustic transmission are obtained by studying the propagations in the SL and the nonlinear medium separately with the conventional transfer-matrix method and a perturba- tion technique. Compared with the previous numerical method, the proposed approach contributes a better physical insight into the intrinsic mechanism of acoustic rectification and helps us to predict the performance of an AD within the effective rectifying bands in a simple way. This is potentially significant for the practical design and fabrication of AD devices.We give an analytical analysis to the acoustic propagation in an acoustic diode （AD） model formed by coupling a superlattice （SL） with a nonlinear medium. Analytical solutions of the acoustic transmission are obtained by studying the propagations in the SL and the nonlinear medium separately with the conventional transfer-matrix method and a perturba- tion technique. Compared with the previous numerical method, the proposed approach contributes a better physical insight into the intrinsic mechanism of acoustic rectification and helps us to predict the performance of an AD within the effective rectifying bands in a simple way. This is potentially significant for the practical design and fabrication of AD devices.

关 键 词：acoustic diode transfer-matrix method 

分 类 号：TN111[电子电信—物理电子学]