Resonant Band Gaps from a Narrow Slit at Terahertz Frequencies
We report a simple sub-wavelength device for resonant band gaps generation at the terahertz (THz) frequencies. Employing the surface plasmon polaritons, only a single sub wavelength slit can cut out the THz spectrum effectively. The transmission spectrum of thus device is measured using the THz time domain spectroscopy system. With the slit becomes narrower, the transmission peaks move to the high frequency direction and the depth of the forbidden gap increase. Theoretical simulations are also carried out by using the the finite difference time domain method. The simulation results agree with experimental results well. This kind of devices can provide an approach to control the THz photons.
Yan Zhang Kuo Meng Yanhua Wang
Beijing Key Lab for Terahertz Spectroscopy and Imaging,Key Laboratory of Terahertz Optoelectronics Ministry of Education,Department of Physics,Capital Normal University Beijing 100037,China
国际会议
Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)
杭州
英文
1-4
2008-03-24（万方平台首次上网日期，不代表论文的发表时间）