Controlling emission properties of rare-earth ions via photonic crystal structures

• Project/Area Number: 26870351
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electronic materials/Electric materials; Optical engineering, Photon science
• Research Institution: Osaka University
• Principal Investigator: Kojima Takanori 大阪大学, 工学研究科, 助教 (70725100)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: フォトニック結晶 / 光共振器 / 希土類 / エルビウム / GaAs / 発光制御

Outline of Final Research Achievements

We studied emission properties of Er3+ ions embedded in GaAs-based two-dimensional photonic crystal nanocavity. We have grown Er,O co-doped GaAs slab layer by organometallic vapor phase epitaxy. Photonic crystal structures were fabricated by electron beam lithography and plasma etching technique. Numerical simulation using Finite-difference time-domain(FDTD) method was performed and it predicted emission enhancement of 5.4 times. This prediction was compared with the photoluminescence measurement, however, the experimental emission enhancement was 20 times, which exceeded the prediction. This extra enhancement might be due to the interaction among Er ions in the nanocavity, such as superradiant.

Research Products

• [Presentation] High-Q photonic crystal double-hetero structure nanocavity with Er,O-codoped GaAs (2017)
  • Author(s): M. Ogawa, N. Fujioka, K. Sakuragi, T. Kishina, T. Kojima, and Y. Fujiwara
  • Organizer: International Conference on Nano-photonics and Nano-optoelectronics 2017
  • Place of Presentation: Pacifico Yokohama conference center
  • Year and Date: 2017-04-18
  • Int'l Joint Research
• [Presentation] Emission properties of Er ions in GaAs modulated by photonic crystal nanocavities (2016)
  • Author(s): T. Kojima, K. Sakuragi, M. Ogawa, N. Fujioka, A. Koizumi, S. Noda, and Y. Fujiwara
  • Organizer: 17th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN17)
  • Place of Presentation: Todaiji Temple Cultural Center, Nara, Japan
  • Year and Date: 2016-03-28
  • Int'l Joint Research
• [Presentation] フォトニック結晶光ナノ共振器の導入によるGaAs中のEr発光中心の発光制御 (2016)
  • Author(s): 児島貴德, 櫻木寛至, 小川雅之, 藤岡夏輝, 小泉淳, 野田進, 藤原康文
  • Organizer: 第63回 応用物理学会春季学術講演会
  • Place of Presentation: 東京工業大学大岡山キャンパス
  • Year and Date: 2016-03-19
• [Presentation] High-Q photonic crystal double-heterostrcture nanocavity with Er,O-codoped GaAs for low-threshold lasers (2015)
  • Author(s): M. Ogawa, N. Fujioka, K. Sakuragi, T. Kojima, A. Koizumi, and Y. Fujiwara
  • Organizer: 19th SANKEN International, The 14th SANKEN Nanotechnology Symposium, 3rd KANSAI Nanoscience and Nanotechnology, 11th Handai Nanoscience and Nanotechnology International Symposium
  • Place of Presentation: Icho Kaikan, Osaka University, Suita, Japan
  • Year and Date: 2015-12-07
  • Int'l Joint Research
• [Presentation] GaAs中におけるEr発光中心の発光制御－フォトニック結晶光ナノ共振器の導入－ (2015)
  • Author(s): 櫻木寛至, 児島貴德, 小川雅之, 藤岡夏輝, 冨士田誠之, 小泉淳, 野田進, 藤原康文
  • Organizer: 第2回半導体エレクトロニクス部門委員会第1回研究会
  • Place of Presentation: 大阪工業大学うめきたナレッジセンター
  • Year and Date: 2015-07-11