Acceleration of carrier-relaxation time in QDs embedded in a photonic crystal waveguide due to the Purcell effect

由于珀塞尔效应，嵌入光子晶体波导中的量子点的载流子弛豫时间加速

• 批准号: 21760034
• 负责人: OZAKI Nobuhiko
• 金额: $ 2.66万
• 依托单位: Wakayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21760034/
• 关键词: フォトニック結晶; 量子ドット; 超高速パルス分光; 光非線形象; 光非線形現象

We have proposed to control a carrier relaxation time in self-assembled quantum dots (QDs) embedded in a photonic crystal waveguide (PC-WG) by using the Purcell effect. Resonance of a high photon density-of-states region in the PC-WG mode with the electron transition energy in the QD will increase the spontaneous emission rate and the carrier relaxation time can be shortened. To verify the resonance effect, QDs embedded in PC-WGs with various lattice constants were fabricated and pump-probe measurements were performed. As a result, we found that the relaxation time was shortened when the high photon DOS region resonated with the ES emission wavelength of the QD.

我们提出了利用珀塞尔效应来控制嵌入在光子晶体波导(PC-WG)中的自组装量子点的载流子弛豫时间。PC-WG模中的高光子态密度区域与量子点中的电子跃迁能发生共振，可提高自发发射率，缩短载流子弛豫时间。为了验证这种共振效应，我们在PC-WGS中制备了不同晶格常数的量子点，并进行了抽运-探测测量。结果发现，当高光子DOS区与量子点的ES发射波长共振时，弛豫时间缩短。

项目成果

Advanced quantum dot and photonic crystal technologies for integrated nanophotonic circuits

用于集成纳米光子电路的先进量子点和光子晶体技术

• 发表时间: 2009
• 期刊: Microelectronics Journal vol.40
• 作者: Y.Sugimoto;N.Ikeda;N.Ozaki;Y.Watanabe;S.Ohkouchi;T.Kuroda;T.Mano;T.Ochiai;K.Kuroda;N.Koguchi;K.Sakoda;K.Asakawa
• 通讯作者: K.Asakawa

Wideband Operation of 2D Photonic Crystal Directional Coupler with Topology Optimized Waveguide Bends

具有拓扑优化波导弯曲的 2D 光子晶体定向耦合器的宽带操作

• 发表时间: 2010
• 期刊: Journal of Nonlinear Optical Physics & Materials vol.19
• 作者: Yoshinori Watanabe;Naoki Ikeda;Yoshiaki Takata;Yoshinori Kitagawa;Nobuhiko Ozaki;Yoshimasa Sugimoto;Kiyoshi Asakawa
• 通讯作者: Kiyoshi Asakawa

Nanophotonics technology for advanced quantum dot/photonic crystal device and metal/semiconductor plasmonic device

先进量子点/光子晶体器件和金属/半导体等离子体器件的纳米光子技术

• 发表时间: 2010
• 期刊: Proc.of Photonics Global Conference (PGC) 2010
• 作者: Y.Sugimoto;N.Ikeda;D.Tsuya;N.Ozaki;H.Oda;A.Yamanaka;A.Miura;T.Nomura;D.Inoue;H.Fujikawa;S.Ohkouchi;Y.Watanabe;Y.Koide;K.Satoh;K.Asakawa
• 通讯作者: K.Asakawa

Fabrication and characterization of an all-optical flip-flop based on photonic crystal waveguides and two-color quantum dots

基于光子晶体波导和双色量子点的全光触发器的制作和表征

• 发表时间: 2010
• 作者: N.Ozaki;Y.Takata;Y.Kitagawa;N.Ikeda;S.Nakamura;S.Ohkouchi;A.Watanabe;Y.Watanabe;Y.Sugimoto;K.Asakawa
• 通讯作者: K.Asakawa