%0 Journal Article
%T A Polarization-Dependent Normal Incident Quantum Cascade Detector Enhanced Via Metamaterial Resonators
%A Chuan-Jin Zhang
%A Feng-Jiao Wang
%A Feng-Qi Liu
%A Jun-Qi Liu
%A Lei Wang
%A Li-Jun Wang
%A Ning Zhuo
%A Shen-Qiang Zhai
%A Shu-Man Liu
%A Zhan-Guo Wang
%J Archive of "Nanoscale Research Letters".
%D 2016
%R 10.1186/s11671-016-1749-2
%X The design, fabrication, and characterization of a polarization-dependent normal incident quantum cascade detector coupled via complementary split-ring metamaterial resonators in the infrared regime are presented. The metamaterial structure is designed through three-dimensional finite-difference time-domain method and fabricated on the top metal contact, which forms a double-metal waveguide together with the metallic ground plane. With normal incidence, significant enhancements of photocurrent response are obtained at the metamaterial resonances compared with the 45กใ polished edge coupling device. The photocurrent response enhancements exhibit clearly polarization dependence, and the largest response enhancement factor of 165% is gained for the incident light polarized parallel to the split-ring gap
%K Infrared
%K Photodetectors
%K Polarization-selective devices
%K Metamaterials
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5133221/