Excitonic nonlinearity in inorganic-organic quantum-well materials

无机-有机量子阱材料中的激子非线性

• 批准号: 15340103
• 负责人: EMA Kazuhiro
• 金额: $ 10.3万
• 依托单位: Sophia University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15340103/
• 关键词: exciton; inorganic-organic hybrid material; nonlinear optics; quantum-well material; hybrid exciton; multi-quantum-well polariton; 有機・無機複合型物質

We have investigated excitonic nonlinearity in morganic-organic quantum-well materials, (C6H13NH3)2PbI4 and (C4H9NH3)2PbBr4. These materials are known to have extremely large nonlinearity. We investigated the origin of the large nonlinearity; especially we focused on the relationship between the nonlinearity and excitonic spin relaxation. The summary of results is the following;(1) Using several nonlinear experiments we have found that the ultrafast spin relaxation of these materials contributes the large excitonic nonlinearity.(2) We examined the relationship between the spin relaxation and other nonlinear parameters. As a result we have found that the spin relaxation does not bring any size-enhancement of the nonlinearity as the case of other nonlinear parameters.(3) In order to obtain much larger nonlinearity we have to use*another resonance such as polaritonic effect. We have shown that the polaritonic effect increases the excitonic nonlinearity through the supperradiant effect.

我们已经研究了摩根有机量子孔材料中的激素非线性，（C6H13NH3）2PBI4和（C4H9NH3）2pbbr4。已知这些材料具有极大的非线性。我们研究了大型非线性的起源。特别是我们专注于非线性和激子自旋放松之间的关系。结果的摘要为以下；（1）使用几个非线性实验，我们发现这些材料的超快自旋松弛促进了较大的兴奋性非线性。（2）我们检查了自旋松弛与其他非线性参数之间的关系。结果，我们发现自旋松弛不会带来非线性的任何大小增强，作为其他非线性参数的情况。（3）为了获得更大的非线性，我们必须使用*其他共振，例如偏振效应。我们已经表明，偏振效应通过supperradiant效应提高了激子的非线性。

项目成果

Image charge effect on two-dimensional excitons in an inorganic-organic quantum-well crystal

• DOI: 10.1103/physrevb.71.045312
• 发表时间: 2005-01-01
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Tanaka, K;Takahashi, T;Ema, K
• 通讯作者: Ema, K

J.Hamazaki: "Ultrafast Intersubband Relaxation and Nonlinear Susceptibility at 1.55um in GaN/AlN Quantum Wells"Appl.Phys.Lett.. 84. 1102-1104 (2004)

J.Hamazaki：“GaN/AlN 量子阱中 1.55um 处的超快子带间弛豫和非线性磁化率”Appl.Phys.Lett.. 84. 1102-1104 (2004)

Y.Kato: "Extremely large binding energy of biexcitons in an organic-inorganic quantum-well material (C_4H_9NH_3)_2PbBr_4"Solid State Commun.. 128. 15-18 (2003)

Y.Kato：“有机-无机量子阱材料中双激子的极大结合能(C_4H_9NH_3)_2PbBr_4”Solid State Commun.. 128. 15-18 (2003)

江馬一弘: "無機有機複合型量子井戸構造の励起子"日本物理学会誌. 58. 20-28 (2003)

Kazuhiro Ema：“无机-有机复合量子阱结构中的激子”日本物理学会杂志 58. 20-28 (2003)。

Ultrafast Intersubband Relaxation and Nonlinear Susceptibility at 1.55um in GaN/A1N Quantum Wells

GaN/AlN 量子阱中 1.55um 的超快子带间弛豫和非线性磁化率

• 发表时间: 2004
• 期刊: Appl.Phys.Lett. 84
• 作者: J.Hamazaki;S.Matsui;H.Kunugita;K.Ema;H.Kanazawa;T.Tachibana;A.Kikuchi;K.Kishino
• 通讯作者: K.Kishino