Open AccessAnalysis of near-field components of a plasmonic optical antenna and their contribution to quantum dot infrared photodetector enhancement
Author(s) -
Guiru Gu,
Jarrod Vaillancourt,
Xuejun Lu
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.024970
Subject(s) - optics , quantum dot , plasmon , photodetector , physics , optoelectronics , near and far field , antenna (radio) , infrared , telecommunications , computer science
In this paper, we analyze near-field vector components of a metallic circular disk array (MCDA) plasmonic optical antenna and their contribution to quantum dot infrared photodetector (QDIP) enhancement. The near-field vector components of the MCDA optical antenna and their distribution in the QD active region are simulated. The near-field overlap integral with the QD active region is calculated at different wavelengths and compared with the QDIP enhancement spectrum. The x-component (E(x)) of the near-field vector shows a larger intensity overlap integral and stronger correlation with the QDIP enhancement than E(z) and thus is determined to be the major near-field component to the QDIP enhancement.