Chanaka Rupasinghe,Malin Premaratne,Ivan D. Rukhlenko
申请号：
US15048520
公开号：
US20180252947A1
申请日:
2016.02.19
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A spaser device comprises a graphene resonator and a carbon nanotube (CNT) gain element coupled via exciton-plasmon interaction. The graphene resonator may be a rectangular or square graphene nanoflake (GNF), and the CNT gain element may be characterised by chirality vector (n,m) selected such that the CNT has semiconducting properties. The CNT gain element may be illuminated using a light source having a photon energy corresponding with a first exciton energy (E22) of the CNT, whereby excitons having a second exciton energy (E11) less than the first exciton energy are generated in the CNT, and coupled to a surface plasmon (SP) mode of the graphene resonator. When the rate of generation of excitons having the second exciton energy exceeds a gain threshold, continuous spasing is established within the spaser device.
