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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：光电工程与仪器科学学院院长、党委副书记
其他任职：辽宁省先进光电子技术重点实验室副主任，大连市新型功能材料与光电子器件重点实验室主任，中国超材料学会理事，中国机械工程学会极端制造分委员会委员，国际先进材料学会会士，Microsystems&Nanoengineering、chemosensors等期刊副编辑
性别：男
毕业院校：布里斯托尔大学
学位：博士
所在单位：光电工程与仪器科学学院
学科：光学工程. 电磁场与微波技术. 光学. 测试计量技术及仪器. 精密仪器及机械
办公地点：研教楼706
联系方式：0411-84706156
电子邮箱：caotun1806@dlut.edu.cn
Chemical control of continuous light-steering using an array of gradient Au/Bi2Se3/Au strips
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论文类型：期刊论文
发表时间：2015-08-06
发表刊物：RSC ADVANCES
收录刊物：SCIE、EI、Scopus
卷号：5
期号：85
页面范围：69319-69324
ISSN号：2046-2069
摘要：Light-steering devices have been extensively investigated for a large host of applications in defense, communications, data storage and display technologies. However, the challenge is to continuously steer the light over a wide angular range in the optical region, using actively tunable structure with a small footprint. Here, we numerically demonstrate a gradient phase-array-like Au/Bi2Se3/Au trilayers plasmonic resonators for actively steering the beam in the near-infrared (N-IR) region. The proposed device provides a continuously large beam-steering of 18 degrees for the reflected light and 9 degrees for the transmitted light around the resonant wavelength of 1500 nm by changing the state of Bi2Se3 from amorphous to crystalline. The essence of this phenomenon lies in the variation of refractive index of Bi2Se3 induced by the phase transition, which is achieved through the chemical reactions between the Bi2Se3 film and AgNO3 solution. The continuous beam-steering is enabled by gradually increasing the immersion time (t(im)) of the Bi2Se3 into AgNO3 solution. This study exploits a new research area of Bi2Se3 based nano-antenna for dynamic optical routing and switching in photonic circuits.