Improving the diamond optical properties using a phonon-assisted near-field etching

2015 Fiscal Year Final Research Report

• Project/Area Number: 26630122
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Electronic materials/Electric materials
• Research Institution: The University of Tokyo
• Principal Investigator: Yatsui Takashi 東京大学, 工学(系)研究科(研究院), 准教授 (80505248)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 近接場光 / ダイヤモンド / NVセンター

Outline of Final Research Achievements

Nitrogen vacancy (NV) center in diamond is considered to be a future magnetic sensor because of its high sensitivity. However, due to its hardness and high refractive index, it is difficult to obtain the expected properties.
To overcome those difficulties, we have developed a near-field etching, in which the optical near-field selectively generates at the vicinity of the protrusions, it can realize selectively etch the surface impurities. We performed the near-field etching on nanodimaond with NV, we successfully realized more than 10 times increase of NV luminescent intensity.

Free Research Field

ナノテクノロジー