[15p-B4-1~8] CS.5 3.11&13.7 Code-sharing session

[15p-B4-1] Improvement of lasing threshold in nanowire-quantum dot lasers on distributed-Bragg reflectors

〇Jun Tatebayashi¹, Yasutomo Ota¹, 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 optically-pumped lasing oscillation in free-standing GaAs nanowire-quantum dot lasers. In this presentation, we report on improvement of lasing threshold in the free-standing nanowires-quantum dot lasers by studying the numerical simulation of the reflectivity at the DBR-nanowire interface with various NW diameters and number of DBR pairs.