ICQM seminar：Metalsurface materials for terahertz wave front control



報告題目：	Metalsurface materials for terahertz wave front control
報告人：	Yan Zhang(張岩)
報告時間：	2013年3月13日（周三）下午4:00
報告地點：	理科五号樓607會議室
聯系人：	sundong@pku.edu.cn 孫棟
報告摘要:	A smart and small scale element is quite important for system integration. A practical and promising avenue to the miniaturization of optical devices based on the metalsurface has been proposed. Designed arrays of complementary V-shaped antennas in planar gold films with thicknesses of 100 nm were used to manipulate the light propagation. Each of the V-shaped antennas could be designed separately, therefore, arbitrary distribution of the optical filed with various phases and amplitudes could be obtained. Then, according to the Huygens’ secondary source principle, arbitrary manipulations of the light propagation are essentially achieved. The solid experimental results in the terahertz wave band of the focusing and imaging performance of ultrathin planar optical elements (“cylindrical” and “spherical” lenses ), image reconstructions of the phase holograms which were comprised of V-shaped antennas arrays provided a convincing demonstration for the design approach of various ultrathin planar optical elements. It can be predicted that the researches on the miniaturization of optical devices will be greatly promoted if functional optical material is introduced into such ultrathin optical elements.
個人簡介：	張岩，分别于1994年和1996年在哈爾濱工業大學獲得學士和碩士學位，1996.09-1999.07年為中科院物理所博士研究生；1999.08-2001.08 日本山形大學工學部，日本學術振興會特别研究員；2001.10-2002.07，香港理工大學電機工程系，副研究員；2002.08-2003.10，德國斯圖加特大學應用光學研究所，洪堡學者；2003.11-今，首都師範大學物理系，教授；2005.04-今，哈爾濱工業大學兼職教授，博士生導師。