论文标题
基于TAMM等离子体结构的光声超声发电机的建议
Proposal for photoacoustic ultrasonic generator based on Tamm plasmon structures
论文作者
论文摘要
提出了基于光学激发的TAMM等离子体结构的超声波产生的方案。结果表明，TAMM等离子体结构可以在金属层中提供具有任意波长的激光脉冲的完全吸收，从而提供了使用红外半导体激光器激发超声波的可能性。对结构的激光脉冲吸收，热传递和动力学特性进行了建模，并找到了结构的最佳设计。已经证明，基于TAMM的基于TAMM的光声发生器可以使用预定义的频谱在频带中发射超声波。声音转换效率的光电功率随激光调制和激发能力的频率线性增长。
The scheme of generation of ultrasound waves based on optically excited Tamm plasmon structures is proposed. It is shown that Tamm plasmon structures can provide total absorption of a laser pulse with arbitrary wavelength in a metallic layer providing the possibility of the use of an infrared semiconductor laser for the excitation of ultrasound waves. Laser pulse absorption, heat transfer and dynamical properties of the structure are modeled, and the optimal design of the structure is found. It is demonstrated that the Tamm plasmon-based photoacoustic generator can emit ultrasound waves in the frequency band up to 100 MHz with pre-defined frequency spectrum. Optical power to sound power conversion efficiency grows linearly with frequency of the laser modulation and excitation power.
