[16a-422-1~10] 3.13 Semiconductor optical devices

[16a-422-3] Room-Temperature Capsule-Shaped Wavelength-Scale Metal-Clad Laser Pulse Operating

〇(D)Yi Xiao¹, Richard J.E. Taylor¹, Chuangqing Yu¹, Takuo Tanemura¹, Yoshiaki Nakano¹ (1.Tokyo Univ.)

Keywords:nanometallic lasers, semiconductor lasers

We fabricate a capsule-shaped metal-clad wavelength-scale cavities on InP and demonstrate room-temperature lasing at 1550-nm wavelength. By introducing an optimized curvature to the sidewalls of a conventional rectangular metal-clad laser, we effectively reduce the optical loss of transverse-electric (TE) mode and experimentally confirm, for the first time, clear improvement in side mode suppression ratio and slope efficiency of the laser under pulsed optical pumping.