摘要
In this Letter, we propose a broadband near-infrared(NIR) absorber based on the phase transition material VO2.By designing different arrangements of the VO2 square lattice at high and low temperatures on fused silica substrates, the absorption rate reaches more than 90% in the entire 1.4–2.4 μm range. Using a finite-difference time-domain simulation method and thermal field analysis, the results prove that the absorber is polarizationindependent and has wide-angle absorption for incident angles of 0°–70°. The proposed absorber has a smoother absorption curve and is superior in performance, and it has many application prospects in remote sensing geology.
作者
田蓉
李毅
刘志敏
周建忠
刘进
范丽娜
赵文晴
李军显
张欣
彭闯
吴昱达
王晓华
方宝英
Rong Tian;Yi Li;Zhimin Liu;Jianzhong Zhou;Jin Liu;Lina Fan;Wenqing Zhao;Junxian Li;Xin Zhang;Chuang Peng;Yuda Wu;Xiaohua Wang;Baoying Fang(School of Optical-Electrical and Computer Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Modern Optical System,Shanghai 200093,China;School of Electric and Information,Shanghai University of Electric Power,Shanghai 200090,China)
基金
the National High Technology Research and Development Program of China(No. 2006AA03Z348)
the Foundation for Key Program of Ministry of Education,China (No. 207033)
the Key Science and Technology Research Project of Shanghai Committee,China (No. 10ZZ94)
the Shanghai Talent Leading Plan,China (No. 2011-026)。
