Analysis of near-field components of a plasmonic optical antenna and their contribution to quantum dot infrared photodetector enhancement

作者：Gu Guiru; Vaillancourt Jarrod; Lu Xuejun^*

来源：Optics Express, 2014, 22(21): 24970-24976.

DOI：10.1364/OE.22.02497024970

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 (Ex) of the near-field vector shows a larger intensity overlap integral and stronger correlation with the QDIP enhancement than Ez and thus is determined to be the major near-field component to the QDIP enhancement.

• 出版日期2014-10-20