题目：Terahertz waveguides and plasmonic effects for subwavelength field confinement
报告人：Prof. Daniel M. Mittleman （Department of Electrical and Computer Engineering
Rice University, Houston, Texas）
摘要：
Concentrating optical energy into an ultra-small spot beyond the diffraction limit has long been an interesting topic in photonics. For terahertz radiation, this challenge is of particular importance, to meet the growing interest in imaging and spectroscopy of materials with a size below the sub-millimeter scale of the free-space wavelength. One of the most exciting new approaches is to use subwavelength-sized plasmonic waveguides, based on the excitation of localized surface plasmon polaritons (SPPs) on metallic surfaces. While most of the studies on plasmonic waveguides have been focused in the optical regime, subwavelength plasmonic waveguides in the THz spectral regime have also recently attracted a great deal of attention. Here, we discuss several terahertz waveguide structures in the context of plasmonic waveguiding, and show how this understanding can enable deep subwavelength confinement of broadband terahertz signals.
Prof. Daniel M. Mittleman简介：
Dr. Mittleman received his B.S. in physics from the Massachusetts Institute of Technology in 1988, and his M.S. in 1990 and Ph.D. in 1994, both in physics from the University of California, Berkeley, under the direction of Dr. Charles Shank. His thesis work involved the spectroscopy of semiconductor nanocrystals using laser pulses with durations of less than 20 femtoseconds, at wavelengths from 480 nm to 670 nm. He then joined AT&T Bell Laboratories as a post-doctoral member of the technical staff, working first for Dr. Richard Freeman on a terawatt laser system, and then for Dr. Martin Nuss on terahertz spectroscopy and imaging. Dr. Mittleman joined the ECE Department at Rice University in September 1996, where he is a Professor. At Rice, his research interests involve various aspects of spectroscopy, sensing, and imaging using terahertz radiation. Dr. Mittleman is a Fellow of the Optical Society of America and of the IEEE.
时间：2013年5月7日（星期二）上午10：00
地点：中科院物理研究所M楼253会议室
联系人：汪 力 研究员 （Tel：82649339）
金奎娟 研究员 （Tel：82648099）
主办单位：中国科学院光物理重点实验室，中国科学院物理研究所-美国光学学会学生俱乐部
