Open AccessEnhanced responsivity resonant RF photodetectors
Author(s) -
R. Liu,
Sukrith Dev,
Yuhan Zhong,
Ruochen Lu,
W. Streyer,
Jeffery Allen,
Monica Allen,
Brett R. Wenner,
Songbin Gong,
Daniel Wasserman
Publication year - 2016
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.026044
Subject(s) - photodetector , responsivity , detector , optics , optoelectronics , radio frequency , photonics , materials science , photoconductivity , electronic circuit , semiconductor , physics , telecommunications , quantum mechanics , computer science
The responsivity of room-temperature, semiconductor-based photodetectors consisting of resonant RF circuits coupled to microstrip buslines is investigated. The dependence of the photodetector response on the semiconductor material and RF circuit geometry is presented, as is the detector response as a function of the spatial position of the incident light. We demonstrate significant improvement in detector response by choice of photoconductive material, and for a given material, by positioning our optical signal to overlap with positions of RF field enhancement. Design of RF circuits with strong field enhancement are demonstrated to further improve detector response. The improved detector response demonstrated offers opportunities for applications in RF photonics, materials metrology, or single read-out multiplexed detector arrays.