Hexagonal Serrated Electrode for High Energy Efficiency and Large Bandwidth Acousto-Optic Deflector

被引：1

作者：

Liang, Li ^{[1
]}

Yin, Yonglin ^{[1
]}

Wang, Zhuang ^{[1
]}

Wu, Ji ^{[1
]}

Wang, Zi ^{[1
]}

Feng, Qibin ^{[1
]}

Lv, Guoqiang ^{[1
]}

机构：

[1] Hefei Univ Technol, Anhui Prov Engn Res Ctr Semicond Inspect Technol &, Anhui Prov Key Lab Measuring Theory & Precis Instr, Sch Instrumentat & Optoelect Engn, Hefei 230009, Anhui, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2024年 / 36卷 / 17期

关键词：

Acoustic beams; Acousto-optic deflector; high energy efficiency; large bandwidth; low side lobe;

D O I：

10.1109/LPT.2024.3427338

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In acousto-optic interaction, the acoustic field plays a key role in the performance of the acousto-optic deflector. The region of electrode within the acousto-optic deflector determines the distribution of the three dimensional acoustic field. The traditional acousto-optic deflector based on rectangular electrodes suffer from high energy consumption and limited bandwidth issues. In this letter, a hexagonal serrated electrode design is proposed for high energy efficiency and large bandwidth acousto-optic deflector. Hexagonal serrated electrode effectively suppresses acoustic side lobe due to its hexagonal profile, resulting in improved collimation and uniformity of the acoustic field. Therefore, it can effectively improve the energy efficiency and diffracted spot uniformity of the acousto-optic deflector. In addition, a wide bandwidth can be obtained due to the serrated edge design of the electrode, which gives them a large divergence angle. Simulation and experiment show that the energy efficiency of hexagonal serrated electrode is increased by 19.5% and the bandwidth is increased by 18% compared with the traditional rectangular electrode.

引用

页码：1025 / 1028

页数：4