title: Electrical source of surface plasmon polaritons based on hybrid Au-GaAs QW structures.
abstract: In this paper, the electrical excitation of surface plasmon polaritons (SPPs) based on a hybrid metal-semiconductor quantum well (QW) structure is investigated by finite-difference time-domain (FDTD) simulations and experiments. The metal-QW hybrid structure is made of a metal grating structure deposited on a semiconductor QW with small separation between them. When electron-hole pairs are excited using current injection into the QW, SPPs are generated and coupled out by a metal grating. The spectral and imaging measurements were performed to confirm the electrical excitation of SPPs. The hybrid structure could serve as a plasmonic source for integrated plasmonic circuits.
authors.affiliation: Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Hong
authors.initials: H
authors.lastname: Wei
authors.forename: Hao
authors.initials: H
authors.lastname: Shen
authors.forename: Zhuoxian
authors.initials: Z
authors.lastname: Wang
authors.forename: Zhensheng
authors.initials: Z
authors.lastname: Zhao
authors.forename: Xuanming
authors.initials: X
authors.lastname: Duan
authors.forename: Hongxing
authors.initials: H
authors.lastname: Xu