Study of modulation of plasmonic nanolasers on graphene

• Main Authors: Li, Jhu-Hong, 李竹弘
• Other Authors: Lu, Tien-Chang
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/3t74cr

碩士 === 國立交通大學 === 光電工程研究所 === 107 === Surface plasmon polariton (SPP), which is the combination of oscillated charge wave and photon, and graphene, which is a membrane with thickness of one atom, are two popular topics in scientific region. The former has the properties including strongly localized intensity and ultra-small mode volume, which serve as good information to create opto-electronic integrated circuits (OPICs) and inspire researchers to make practical nanolaser device possible. Then, the traits of graphene consists of good thermal, electrical conductivity and even the strongest mechanical hardness. In this thesis, we strive to make a device combing SPP and graphene which is able to be modulated by supplied current while optically pumped. We transferred graphene onto Al and Ag respectively first and discovered ZnO NW/Graphene/Al2O3/Al structure has lower average lasing threshold than those from ZnO NW/ Al2O3/Al, ZnO NW/Graphene/Al2O3/Ag and ZnO NW/ Al2O3/Ag structures. Then, we successfully fabricated and demonstrated the plasmonic nanolaser device using ZnO NW/Graphene/Al2O3/Al structure which can be controlled by external current. We can turn on and off the nanolaser by giving it 0 mA and 200 mA respectively. Besides, the operation times can be as many as 10 times at least.