[19p-W834-1~17] 9.2 Nanowires and Nanoparticles

[19p-W834-7] InGaAs/GaAs nanowire-quantum dot lasers grown on AlGaAs/GaAs distributed Bragg reflector

〇Jun Tatebayashi¹, Jinfa Ho², Yasutomo Ota^1,2, Satoshi Kako^1,2, Satoshi Iwamoto^1,2, Yasuhiko Arakawa^1,2 (1.NanoQUINE, the Univ. of Tokyo, 2.IIS, the Univ. of Tokyo)

Keywords:nanowire,quantum dots,nanolasers

Nanowire-quantum dot lasers have been recently attracted much attention as an ultra-small, highly efficient coherent light source. We have so far demonstrated for the first time optically-pumped lasing oscillation in a single GaAs nanowire with quantum dots. However, it would be crucial to realize electrically driven nanowire-quantum dot lasers towards future diverse applications of nanowire lasers. In this presentation, we propose and demonstrate free-standing GaAs nanowire lasers with 75-stack InGaAs/GaAs quantum dots grown on AlGaAs/GaAs distributed Bragg reflector/GaAs(111)B substrates towards highly efficient electrically-driven lasers based on nanowire architectures.