Girshova Elizaveta I, Mikitchuk Alena P, Belonovski Alexey V, Morozov Konstantin M, Ivanov Konstantin A, Pozina Galia, Kozadaev Konstantin V, Egorov Anton Yu, Kaliteevski Mikhail A
Opt Express. 2020 Aug 31;28(18):26161-26169. doi: 10.1364/OE.400639.
The scheme of a 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 predefined frequency spectrum.
提出了一种基于光激发塔姆等离激元结构产生超声波的方案。结果表明，塔姆等离激元结构能够在金属层中实现对任意波长激光脉冲的全吸收，这为使用红外半导体激光器激发超声波提供了可能性。对该结构的激光脉冲吸收、热传递和动力学特性进行了建模，并找到了结构的优化设计。结果表明，基于塔姆等离激元的光声发生器能够在高达100 MHz的频带内发射具有预定义频谱的超声波。
