Enhanced acousto-optic diffraction efficiency in a symmetric SrTiO_(3)/BaTiO_(3)/SrTiO_(3) thin-film heterostructure

Ranu Nayak; Vinay Gupta; Sreenivas Kondepudy

首页> 外文期刊>Applied optics >Enhanced acousto-optic diffraction efficiency in a symmetric SrTiO_(3)/BaTiO_(3)/SrTiO_(3) thin-film heterostructure

【24h】

Enhanced acousto-optic diffraction efficiency in a symmetric SrTiO_(3)/BaTiO_(3)/SrTiO_(3) thin-film heterostructure

机译：对称的SrTiO_（3）/ BaTiO_（3）/ SrTiO_（3）薄膜异质结构中增强的声光衍射效率

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

Guided-wave acousto-optic Bragg diffraction and surface acoustic-wave propagation in epitaxially matched SrTiO_(3)/BaTiO_(3)(001)/SrTiO_(3) thin-film heterostructures have been theoretically studied. The optimum electromechanical coupling and Bragg diffraction efficiency have been determined at several acoustic frequencies by means of varying the thickness of the SrTiO_(3) overlayer and the BaTiO_(3) waveguiding layer. A strain-controlling nonpiezoelectric SrTiO_(3) overlayer upon the BaTiO_(3)/SrTiO_(3) structure is found to enhance the coupling coefficient (k~(2)) and the diffraction efficiency significantly. A comparison of asymmetric and symmetric structures shows an increase in the diffraction efficiency from 10.5% to 43.0% and a decrease in the untuned-transducer conversion efficiency from 36 to 23 dB at an operating frequency of 1 GHz with an interaction length of 1 mm and an acoustic power of 1 mW.

机译：从理论上研究了外延匹配的SrTiO_（3）/ BaTiO_（3）（001）/ SrTiO_（3）薄膜异质结构中的导波声光布拉格衍射和表面声波传播。通过改变SrTiO_（3）覆盖层和BaTiO_（3）波导层的厚度，已在几个声频下确定了最佳的机电耦合和布拉格衍射效率。发现在BaTiO_（3）/ SrTiO_（3）结构上的应变控制非压电SrTiO_（3）覆盖层显着提高了耦合系数（k〜（2））和衍射效率。不对称和对称结构的比较显示，在1 GHz的工作频率和1mm的相互作用长度下，衍射效率从10.5％提高到43.0％，未调谐转换器转换效率从36dB降低到23 dB。 1 mW的声功率。

著录项

来源
《Applied optics》 |2000年第31期|共7页
作者
Ranu Nayak; Vinay Gupta; Sreenivas Kondepudy;
展开▼
作者单位

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类光学;
关键词

相似文献

外文文献
中文文献
专利

1. Enhanced acousto-optic diffraction efficiency in a symmetric SrTiO_(3)/BaTiO_(3)/SrTiO_(3) thin-film heterostructure [J] . Ranu Nayak, Vinay Gupta, Sreenivas Kondepudy Applied optics . 2000,第31期

机译：对称的SrTiO_（3）/ BaTiO_（3）/ SrTiO_（3）薄膜异质结构中增强的声光衍射效率
2. Evolution of dislocation arrays in epitaxial BaTiO_(3) thin films grown on (100) SrTiO_(3) [J] . H. P. Sun, W. Tian, X. Q. Pan, Applied Physics Letters . 2004,第17期

机译：在（100）SrTiO_（3）上生长的外延BaTiO_（3）薄膜中位错阵列的演变
3. Unit-Cell by Unit-Cell Epitaxial Growth of SrTiO_(3) and BaTiO_(3) Thin Films by Laser Molecular Beam Epitaxy [J] . 杨国桢, 吕惠宾, 王会生, 中国物理快报：英文版 . 1997,第006期

机译：单位细胞通过激光分子束外延的SRTIO_（3）和BATIO_（3）薄膜的单细胞外延生长
4. Development of Multilayered SrTiO_(3) Thin-Film Capacitors For Embedded Passive Applications [C] . Shuqiang Wang, Atsunori Hattori, Yasuyuki Ozeki, IEEE International Symposium on the Applications of Ferroelectrics . 2007

机译：用于嵌入式无源应用的多层SRTIO_（3）薄膜电容的开发
5. Electron-lattice energy relaxation in laser-excited thin-film Au-insulator heterostructures studied by ultrafast MeV electron diffraction [O] . K. Sokolowski-Tinten, X. Shen, Q. Zheng, 2017

机译：超快MeV电子衍射研究激光激发的薄膜金-绝缘体异质结构中的电子晶格能量弛豫
6. Band Offsets in Complex-Oxide Thin Films and Heterostructures of $SrTiO_{3}$/$LaNiO_{3}$ and $SrTiO_{3}$/$GdTiO_{3}$ by Soft and Hard X-ray Photoelectron Spectroscopy [O] . Conti, G., Kaiser, A. M., Gray, A. X., 2013

机译：软和硬X射线光电子能谱分析$ SrTiO_ {3} $ / $ LaNiO_ {3} $和$ SrTiO_ {3} $ / $ GdTiO_ {3} $的复合氧化物薄膜和异质结构的能带偏移

Enhanced acousto-optic diffraction efficiency in a symmetric SrTiO_(3)/BaTiO_(3)/SrTiO_(3) thin-film heterostructure

摘要

著录项

相似文献

相关主题

期刊订阅