Title :
Study on the metal grating optical coupling for quantum cascade detector
Author :
Li, Luoqing ; Xiong, D.Y.
Author_Institution :
Key Lab. of Polar Mater. & Devices, East China Normal Univ., Shanghai, China
Abstract :
We present the simulation results of a method for the quantum cascade detectors (QCD) optical coupling. A metal grating was integrated with a QCD to convert normal-incident electromagnetic (EM) waves into non-normal, higher-order propagating wave (HOPW) and surface plasmon wave (SPW), which contribute to excite the bound-to-bound (BTB) intersubband transition of carriers in the QCD. The presented results have significance for the QCD optical coupling design and optimization.
Keywords :
diffraction gratings; electromagnetic wave propagation; integrated optics; optical couplers; optical design techniques; photodetectors; surface plasmons; bound-to-bound intersubband transition; integrated optics; metal grating; nonnormal higher-order propagating wave; normal-incident electromagnetic waves; optical coupling design; optimization; quantum cascade detectors; surface plasmon wave; Absorption; Electric fields; Finite difference methods; Gratings; Metals; Optical coupling; Time-domain analysis;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices (NUSOD), 2013 13th International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4673-6309-9
DOI :
10.1109/NUSOD.2013.6633107
