講演情報
[10p-B11-5]Bound State in the Continuumに基づいた高Q値ナノワイヤWGM共振器
〇徐 学俊1、章 国強1,2、滝口 雅人1,2、後藤 秀樹1,3、眞田 治樹1 (1.NTT物性研、2.NTT NPC、3.広島大)
キーワード：
ナノワイヤ、whispering-gallery mode、bound state in the continuum
Semiconductor nanowire lasers have attracted considerable attention as miniaturized, energy-efficient on-chip light sources for communication and sensing applications. Recently, we demonstrated room-temperature telecom-band nanowire lasers with low thresholds and narrow linewidths based on whispering-gallery-mode (WGM) resonators formed in individual InP/InAs multi-quantum-disk (MQD) heterostructure nanowires. To further reduce the lasing threshold and enable continuous-wave operation, significant enhancement of the resonator Q factor is required, particularly for transverse-electric (TE)-polarized WGMs (with majority E-field in-plane) that experience the highest optical gain. Here, we identify the key parameters governing the Q factor and propose a design strategy based on bound states in the continuum (BICs).