Analytical model of an acoustic diode comprising a superlattice and a nonlinear medium |
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| Authors: | Gu Zhong-Ming Liang Bin and Cheng Jian-Chun |
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| Affiliation: | Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Nanjing University, Nanjing 210093, China |
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| Abstract: | 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 perturbation 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 simply way. This is potentially significant for the practical design and fabrication of AD devices. |
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| Keywords: | acoustic diode transfer-matrix method |
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