Joint Study on nonlinear optics in nanostructured materials

纳米结构材料非线性光学联合研究

基本信息

  • 批准号:
    08044067
  • 负责人:
  • 金额:
    $ 2.94万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for international Scientific Research
  • 财政年份:
    1996
  • 资助国家:
    日本
  • 起止时间:
    1996 至 1997
  • 项目状态:
    已结题

项目摘要

We have studied nonlinear optical properties of nanostructured materials to investigate a guiding principle for development of photonic device materials. Exchanging the researchers in French and Japanese teams, we performed experiments and discussed to get mutual understanding of this study. In silver nanocrystal/glass composites, we investigated the nonlinear response in a femtosecond time region with different excitation conditions : surface plasmon, interband (Nagoya University) and intraband (Ecole polytechnique) excitations. we have found that the nonlinear response with a reponse time of a few ps is originated from hot electron effects and nonlinear refractive index is negative. For less than 200 fs, the electron system does not show the Fermi distribution because the system is not in equilibrium. Furthermore, we have observed oscillation behaviors in nonlinear response due to ballistic phonon scattering. In diluted magnetic semiconductors, we have succeeded to fabricate CdMnTe nanocrystals with a diameter of 12 nm by means of the laser ablation technique. In CuCl nanocrystals we have observed quantum beat phenomena due to the quantum interference between exciton and biexciton states and the interference between the zero-phonon and LO phonon assisted transition of confined excitons. Furthermore, we have observed, for the first time, the memory effect of the reservoir, ie. the non-Markovian phase relaxation of confined excitons since acoustic phonons are confined. Finally, we have found the the enhancement of third-order susceptibilities in copper halide nanocrystals is originated from the giant oscillator strength effect, and the two-exciton state and the multiexciton states due to the valence band structure play an important role in nonlinear susceptibilities at the exciton resonance in the large size region. These results give us a guiding principle to develop nonlinear optical materials on the nanometer scale.
我们研究了纳米结构材料的非线性光学性质,为光子器件材料的发展提供了指导原则。我们交换了法国和日本团队的研究人员,进行了实验和讨论,以获得对这项研究的相互理解。在银纳米晶体/玻璃复合材料中,我们研究了不同激励条件下飞秒区域的非线性响应:表面等离激元,带间(名古屋大学)和带内(Ecole理工大学)激励。我们发现响应时间为几ps的非线性响应是由热电子效应引起的,非线性折射率为负。在小于200fs的情况下,电子系统不显示费米分布,因为系统不处于平衡状态。此外,我们还观察到了由弹道声子散射引起的非线性响应的振荡行为。在稀释磁性半导体中,我们成功地利用激光烧蚀技术制备了直径为12 nm的CdMnTe纳米晶体。在CuCl纳米晶体中,由于激子和双激子态之间的量子干涉以及零声子和低声子辅助的受限激子跃迁之间的干涉,我们观察到了量子热现象。此外,我们首次观察到储存库的记忆效应,即。由于声子是受限的,所以受限激子的非马尔可夫相弛豫。最后,我们发现卤化铜纳米晶体中三阶磁化率的增强源于巨振强度效应,并且由于价带结构导致的双激子态和多激子态在大尺寸区域激子共振的非线性磁化率中起重要作用。这些结果为我们在纳米尺度上开发非线性光学材料提供了指导原则。

项目成果

期刊论文数量(5)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
N.Del Fatti et al.: "Ultrafast electron-surface plasmon dynamics in silver nanoparticles" Proceedings of Coference of Ultrafast Spectroscopy. (印刷中). (1998)
N. Del Fatti 等人:“银纳米颗粒中的超快电子表面等离子体动力学”,超快光谱会议论文集(正在出版)。
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    0
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N.Del Fatti et al.: "Ultrafast electron-surface plasmon dynamics in silver nanoparticles" Proceedings of Conference of Ultrafast Spectroscopy. (in press). (1998)
N.Del Fatti 等人:“银纳米颗粒中的超快电子表面等离子体动力学”超快光谱会议记录。
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    0
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A.Nakamura: "Linear and nonlinear optical spectroscopies of semiconductor and metal nanocrystals" Journal of Surface Analysis. 3. 365-371
A.Nakamura:“半导体和金属纳米晶体的线性和非线性光学光谱”表面分析杂志。
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    0
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H.Ohmura et al.: "Quantum beats of confined excitons in CuCl nanocrystals" Journal of Luminescence. (印刷中). (1998)
H. Ohmura 等人:“CuCl 纳米晶体中受限激子的量子拍”,发光杂志(1998 年)。
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    0
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Y.-L.Li et al.: "Size-dependent enhancement of third-order optical nonlinearity in CuBrxCll-x nanocrystals embedded in glass" Jpn.J.Appl.Phys.37. L33-L35
Y.-L.Li 等人:“嵌入玻璃中的 CuBrxCll-x 纳米晶体中三阶光学非线性的尺寸依赖性增强”Jpn.J.Appl.Phys.37。
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NAKAMURA Arao其他文献

NAKAMURA Arao的其他文献

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{{ truncateString('NAKAMURA Arao', 18)}}的其他基金

A study of novel optical responses and enhancement of optical nonlinearities in carbon nanotubes by ultrafast laser spectroscopy
通过超快激光光谱研究碳纳米管中的新型光学响应和光学非线性增强
  • 批准号:
    21340081
  • 财政年份:
    2009
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Large enhancement of nonlinear optical response in nanometersized composite systems
纳米复合系统中非线性光学响应的​​大幅增强
  • 批准号:
    19340081
  • 财政年份:
    2007
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study on photo-induced magnetic transition in II-VI diluted magnetic semiconductor quantum wells with a type band allignment
II-VI型稀磁半导体量子阱中光致磁跃迁的研究
  • 批准号:
    15340096
  • 财政年份:
    2003
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
マンガン酸化物の光誘起磁気相転移とその超高速ダイナミックス
氧化锰的光致磁相变及其超快动力学
  • 批准号:
    11215205
  • 财政年份:
    1999
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research on Priority Areas (B)
Synthesis and Orbital structure of structure- and valence-controlled layered manganites
结构和价态控制的层状锰酸盐的合成和轨道结构
  • 批准号:
    10440091
  • 财政年份:
    1998
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B).
A STUDY OF INTERACTIONS BETWEEN ELEMENTARY EXCITATIONS IN TRANSITION METAL OXIDES BY MEANS OF FEMTOSECOND SPECTROSCOPY
过渡金属氧化物中基本激发之间相互作用的飞秒光谱研究
  • 批准号:
    07454063
  • 财政年份:
    1995
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Study of ultrafast relaxation dynamics of localized center in solids by femtosecond Raman spectroscopy
飞秒拉曼光谱研究固体局域中心超快弛豫动力学
  • 批准号:
    03452037
  • 财政年份:
    1991
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
A Study of Two-Dimensional Exciton Localization and Mobility Edge by Ultrafast Time-Resolved Spectroscopy
超快时间分辨光谱研究二维激子局域化和迁移边缘
  • 批准号:
    61540221
  • 财政年份:
    1986
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

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