物理学报2011，Vol.60Issue(1)：352-357,6.
基于表面等离子体的太赫兹光束方向调控的模拟研究
Simulation research on the control of terahertz beam direction by surtace plasmon
摘要
Abstract
Based on the temperature-dependent complex dielectric constant of indium antimonide, an InSb-dielectric-InSb plasmonic waveguide structure with the grating was realized. At the frequency of 1 THz, a directional beam was obtained,and its radiation direction can be controlled by changing the temperature difference between the grating structures on each side. Finite difference time domain (FDTD) method was adopted to evaluate the relationship between the off-axis angle of the beam and the temperature difference. The tunable directional beaming can be attributed to the grating coupling of the TM surface modes in plasmonic waveguides.关键词
表面等离子体/太赫兹/时域有限差分方法/光束方向控制Key words
surface plasmon/ terahertz/ finite difference time domain/ beam direction control引用本文复制引用
胡海峰,蔡利康,白文理,张晶,王立娜,宋国峰..基于表面等离子体的太赫兹光束方向调控的模拟研究[J].物理学报,2011,60(1):352-357,6.基金项目
国家自然科学基金(批准号:60876049和60906028)资助的课题. （批准号:60876049和60906028）
