Optical field simulation of edge coupled terahertz quantum well photodetectors | Zendy

Lujia Li | Zendy; Peng Bai | Zendy; Yueheng Zhang | Zendy; Wenzhong Shen | Zendy; Juncheng Cao | Zendy

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Optical field simulation of edge coupled terahertz quantum well photodetectors

Author(s) -

Lujia Li,

Peng Bai,

Yueheng Zhang,

Wenzhong Shen,

Juncheng Cao

Publication year - 2018

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.5011956

Subject(s) - terahertz radiation , finite difference time domain method , photodetector , coupling (piping) , position (finance) , optics , optoelectronics , enhanced data rates for gsm evolution , physics , quantum well , materials science , computer science , telecommunications , finance , economics , metallurgy , laser

By finite difference time domain (FDTD) simulation, we report on the optical field distribution within edge coupled terahertz quantum well photodetectors (THz QWPs) in detail. The coupling efficiency of THz QWP structures are studied from three aspects, including the electrode geometry, the position of the active region and the coupling angle. According to the simulation results, proper electrode geometry is suggested in different frequency region, and the optimal position of active region and coupling angle are presented. These results provide a useful guidance for the design and fabrication of the edge coupled THz QWP.

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