Optimal Design of an Ultrasound Transducer for Efficient Acousto-Optic Modulation of Terahertz Radiation

被引：4

作者：

Nikitin, Pavel Alekseevich ^{[1
,2
]}

Gerasimov, Vasily Valerievich ^{[3
,4
]}

机构：

[1] Sci & Technol Ctr Unique Instrumentat RAS, Moscow 117342, Russia

[2] Moscow Power Engn Inst, Krasnokazarmennaya Str 14, Moscow 111250, Russia

[3] Novosibirsk State Univ, Dept Phys, Novosibirsk 630090, Russia

[4] Budker Inst Nucl Phys SB RAS, Novosibirsk 630090, Russia

来源：

MATERIALS | 2022年 / 15卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

acousto-optic interaction; terahertz radiation; diffraction; liquefied inert gas;

D O I：

10.3390/ma15031203

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Acousto-optic (AO) interaction in the terahertz range was investigated with the use of monolithic ultrasound transducers of various widths. Sulfur hexafluoride (SF6) liquefied at a temperature of about 23 & DEG;C and a pressure of 25 bar was used as a medium for AO interaction. The angular and frequency bandwidths of effective AO interaction, as well as the diffraction efficiency per 1 W of the driving electric power, were determined. For the first time, a correct comparison of the AO diffraction efficiency in SF6 with the use of ultrasound transducers with different widths was carried out. In the experiments performed, the highest energy efficiency of the AO modulator was achieved with a transducer with a width of 12 mm.

引用

页数：10

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