Improvements of silicon photonic crystal nanocavity and study on the enhanced nonlinear effect

2014 Fiscal Year Final Research Report

• Project/Area Number: 23686015
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Applied optics/Quantum optical engineering
• Research Institution: Osaka Prefecture University
• Principal Investigator: TAKAHASHI Yasushi 大阪府立大学, 工学(系)研究科(研究院), 准教授 (20512809)
• Research Collaborator: NODA Susumu 京都大学, 工学研究科, 教授 (10208358) ; ASANO Takashi 京都大学, 工学研究科, 准教授 (30332729)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: シリコンラマンレーザー / フォトニック結晶 / 高Q値ナノ共振器 / 顕微分光測定 / 微細加工 / 光通信 / シリコン

Outline of Final Research Achievements

The 1st target of this research is to improve the performance of the silicon photonic crystal nanocavities. Especially, I focused on increasing the Q factor and reducing the fluctuation of the resonant wavelength. The 2nd target is to investigate the mechanism of enhancement of the nonlinear effects in the high-Q nanocavities. For these 4 years, I have successfully increased the Q factor to 9 million from 2.5 million and reduced the fluctuation of resonant wavelength to 0.2 nm from a few nm. Furthermore, I have developed a continuous-wave Raman silicon laser using a high-Q nanocavity, with a cavity size of less than 10 micrometers and an unprecedented ultralow threshold of 1 microwatt. These achievements are attracting much attention.

Free Research Field

半導体光デバイス