Research on Nanoscale Metallic-Cavity Semiconductor Lasers

2015 Fiscal Year Final Research Report

• Project/Area Number: 26600112
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Optical engineering, Photon science
• Research Institution: The University of Tokyo
• Principal Investigator: Tanemura Takuo 東京大学, 工学(系)研究科(研究院), 准教授 (90447425)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 集積フォトニクス / 半導体レーザー / プラズモニクス

Outline of Final Research Achievements

In this project, we aimed to develop sub-micrometer-scale semiconductor lasers to be integrated in the future ultra-dense photonic integrated circuits. First, we have proposed a novel capsule-shaped metallic-cavity structure to enhance the Q factor while reducing the footprint. By introducing sidewalls with optimal curvature, we have demonstrated both numerically and experimentally dramatic increase in cavity Q factor. We have then designed optimal metallic-cavity laser structure coupled to an InP waveguide and developed the fabrication process. Finally, to achieve electrically pumped lasing operation, we have constructed a novel numerical method that takes into account optical, electrical, and thermal properties self-consistently, and successfully derived the optimal structure.

Free Research Field

光エレクトロニクス