Nanostructure formation inside glasses and their three-dimensional integration using ultrafast pulsed laser

玻璃内部纳米结构的形成及其使用超快脉冲激光的三维集成

基本信息

  • 批准号:
    15350121
  • 负责人:
  • 金额:
    $ 8.51万
  • 依托单位:
  • 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

项目摘要

An intense femtosecond laser pulses have an electric field strength which approaches or even exceeds the strength of the electric field that holds valence electrons in transparent materials to their ionic cores. In this regime, the interaction between the laser pulse and the material become highly nonlinear. This nonlinear phenomena cause the change in the structure inside transparent materials. In this research, we carried out the basic research aiming at the internal modification of glasses and the development of three-dimensional optical circuit through nonlinear optical effect such as multiphoton process induced by femtosecond laser. In particular, we performed the experiments on nanofabrication inside glasses. The main results of this research are as follows. When SiO_2 glasses are irradiated with femtosecond laser with a repetition frequency of 200 kH (800 nm), we have observed self-organized periodic structures within the bulk. The structures consists of oxygen depleted regions … More of 20 nm size aligned in a direction perpendicular to the electric field of light wave and with periods as small as 140 nm. These are the smallest embedded structures ever created by light. The mechanism of this self-organized nanostructure is interpreted in terms of interference between the incident light field and the electric field of bulk electron plasma wave, and then resulting in the periodic modulation of electron plasma concentration and the structural changes in glass. In the case of TeO_2 single crystal, periodic nanovoids are formed by an explosive expansion of the ionized material in the focal volume into the surrounded by densified matrix, i.e., microexposion. In the microexposion, the increase in the pressure is caused by a rise in temperature at constant volume. We speculate the periodic nao-void formation mechanism as follows. In the early stages of the interaction between light field and electron plasma wave, periodic pattern of electron density arises in common with SiO_2 glass. Due to the weaker binding energy of Te-O and lower melting point of 730 $degree$, a void formed in the maximum of the electron plasma density distribution. We have directly written submicron photonic structures into the internal bulk of silica glass and TeO_2 single crystal with a femtosecond laser system. The nanostructures are observed to strongly reflect in the blue spectral region but only along the polarization axis of the original writing beam. We think that the observed phenomenon can arise from a self-organized periodic refractive index modulation. The effect can explain systematically the origin of other observed anisotropic behavior reported with such pulsed laser patterning. These polarization-dependent nanostructures should be useful in many monolithic photonic devices and can be harnessed for information storage, micro-electromechanical systems(MEMS) applications or quasi-phase matching where nanoscale periodic structuring is required. A detailed mechanism of the structural changes responsible for the nanograting formation is under investigation. Less
强飞秒激光脉冲具有接近或甚至超过将透明材料中的价电子保持到其离子核的电场强度的电场强度。在这种状态下,激光脉冲与材料之间的相互作用变得高度非线性。这种非线性现象导致透明材料内部结构的变化。本研究以飞秒激光诱导的多光子过程等非线性光学效应对玻璃进行内部改性和开发三维光路为目标,开展了基础研究。特别是,我们在玻璃内进行了纳米纤维的实验。本研究的主要结果如下。当用重复频率为200 kH(800 nm)的飞秒激光辐照SiO_2玻璃时,我们观察到玻璃体中存在自组织周期结构。这些结构由氧耗尽区组成 ...更多信息 其尺寸为20 nm,沿垂直于光波电场的方向排列,周期小至140 nm。这是有史以来由光创造的最小的嵌入式结构。这种自组织纳米结构的形成机理是入射光场与体电子等离子体波的电场发生干涉,从而导致电子等离子体浓度的周期性调制和玻璃中的结构变化。在TeO_2单晶的情况下,周期性的纳米空洞是通过聚焦体积中的电离材料爆炸性膨胀到被致密基质包围的区域中形成的,即,微膨胀在微膨胀中,压力的增加是由恒定体积下的温度升高引起的。我们推测的周期性nao-void形成机制如下。在光场与电子等离子体波相互作用的早期阶段,与SiO_2玻璃一样,电子密度出现周期性的变化。由于Te-O较弱的结合能和较低的熔点(730 ° C),在电子等离子体密度分布的最大值处形成空隙。我们利用飞秒激光系统在石英玻璃和TeO_2单晶体内部直接写入了亚微米光子结构。观察到纳米结构在蓝色光谱区域强烈反射,但仅沿着原始写入光束的偏振轴。我们认为,所观察到的现象可能是由于自组织的周期性折射率调制。这种效应可以系统地解释其他观察到的各向异性行为的起源与这种脉冲激光图案化。这些偏振相关的纳米结构在许多单片光子器件中应该是有用的,并且可以用于信息存储、微机电系统(MEMS)应用或需要纳米级周期性结构的准相位匹配。负责形成纳米光栅的结构变化的详细机制正在调查中。少

项目成果

期刊论文数量(76)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Photo-induced metastability in amorphous semiconductors
  • DOI:
    10.1016/s0022-3093(05)80044-4
  • 发表时间:
    1991
  • 期刊:
  • 影响因子:
    3.5
  • 作者:
    Kazunobu Tanaka
  • 通讯作者:
    Kazunobu Tanaka
S.Katayama, M.Horiike, M.Urairi, K.Hirao, N.Tsutsumi: "Periodic Bell-Shaped Upheaval Structure on Surface of Polycarbonate by Irradiation of Femtosecond Laser Pulse"Japanese Journal of Applied Physics. 42. 6926-6930 (2003)
S.Katayama、M.Horiike、M.Urairi、K.Hirao、N.Tsutsumi:“飞秒激光脉冲辐照聚碳酸酯表面的周期性钟形隆起结构”日本应用物理学杂志。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
先端化学シリーズII(日本化学会編)
高等化学系列II(日本化学会编)
  • DOI:
  • 发表时间:
    2003
  • 期刊:
  • 影响因子:
    0
  • 作者:
    平尾一之(分担執筆)
  • 通讯作者:
    平尾一之(分担執筆)
平尾 一之, 他18名: "基礎から学ぶナノテクノロジー"東京化学同人. 276 (2003)
Kazuyuki Hirao 等 18 人:“从基础开始学习纳米技术”东京化学同人 276 (2003)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
ナノマテリアル・ハンドブック
纳米材料手册
  • DOI:
  • 发表时间:
    2005
  • 期刊:
  • 影响因子:
    0
  • 作者:
    英謙二;白井汪芳
  • 通讯作者:
    白井汪芳
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HIRAO Kazuyuki其他文献

HIRAO Kazuyuki的其他文献

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{{ truncateString('HIRAO Kazuyuki', 18)}}的其他基金

Fabrication of nanomaterials using photoinduced plasma
使用光诱导等离子体制造纳米材料
  • 批准号:
    20245043
  • 财政年份:
    2008
  • 资助金额:
    $ 8.51万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Femtceecond laserinduced nano-manipulation inside transparent materials
透明材料内部的飞秒激光诱导纳米操纵
  • 批准号:
    17206067
  • 财政年份:
    2005
  • 资助金额:
    $ 8.51万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Structural Control of Ceramics with a Femtosecond Pulse Laser
用飞秒脉冲激光控制陶瓷的结构
  • 批准号:
    13450356
  • 财政年份:
    2001
  • 资助金额:
    $ 8.51万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
New Hologram System Using Photochemical Holeburning Phenomena
利用光化学烧孔现象的新型全息图系统
  • 批准号:
    08455409
  • 财政年份:
    1996
  • 资助金额:
    $ 8.51万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Depalopment of Optical Memory Using PHB.
使用PHB开发光存储器。
  • 批准号:
    05453125
  • 财政年份:
    1993
  • 资助金额:
    $ 8.51万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
Development of Upconversion Material with Higher Efficiency
开发更高效率的上转换材料
  • 批准号:
    03555166
  • 财政年份:
    1991
  • 资助金额:
    $ 8.51万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B)

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用于工程各向异性热导率的飞秒激光诱导周期性表面纳米结构
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高功率飞秒激光系统
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飞秒激光设备
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复兴飞秒激光实验室以探测电子材料的提案
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