MRI: Acquisition of an Amplified Ultrashort-Pulse Laser System for Ultrafast and Spectroscopic Studies of Condensed Matter Systems

MRI:获取用于凝聚态系统超快和光谱研究的放大超短脉冲激光系统

基本信息

  • 批准号:
    0115981
  • 负责人:
  • 金额:
    $ 22.78万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2001
  • 资助国家:
    美国
  • 起止时间:
    2001-09-01 至 2004-08-31
  • 项目状态:
    已结题

项目摘要

This award from the Major Research Instrumentation Program will allow Harvey Mudd College to acquire laser system to support research on the ultrafast dynamics of electrons in metals and on the nonlinear optical behavior of ultrathin semiconductors and metals. The system will produce a femtosecond laser beam at a repetition rate of one kilohertz. This will greatly facilitate pump-probe measurements to monitor the non-equilibrium distribution of photoexcited electrons in metals. These measurements will provide information on both the energy- and momentum-scattering rates in metals and permit quantitative comparison to theories of electron dynamics in metals. Through continuum generation and frequency shifting, the laser system will allow spectral characterization of the nonlinear optical response of thin semiconductor films, providing valuable information on the strength of both bulk and surface sources of second-harmonic generation in centrosymmetric semiconductors. Undergraduate students will be trained in the operation of this state-of-the-art femtosecond laser facility. It will also be available as a resource to the members of the Claremont ConsortiumThis award from the Major Research Instrumentation Program will allow Harvey Mudd College to acquire laser system to support research on the ultrafast dynamics of electrons in metals and on the nonlinear optical behavior of ultrathin semiconductors and metals. The high density of mobile electrons inside a metal causes electrons to interact on extremely fast time scales. A detailed understanding of these interactions is important for understanding how metals catalyze chemical reactions and how atoms adsorb on metal surfaces. The new laser system will permit researchers at Harvey Mudd College to perform time-resolved measurements of the changes to the electronic system in a metal caused by an intense pulse of laser light lasting less than fifty femtoseconds (1 fs = 10-15 s). These measurements will provide information on both the energy- and momentum-scattering rates in metals and permit quantitative comparison to theories of electron dynamics in metals. The laser system can provide useful information on both the structures of the semiconductor crystal and on the quality of surfaces. Spectroscopic study of the harmonic response will provide useful information on the relative importance of surface and bulk phenomena and will permit detailed comparisons to calculations of the nonlinear response of materials.Undergraduate research students will be trained in the operation of this state-of-the-art femtosecond laser facility. It will also be available as a resource to the members of the Claremont Consortium.
该重大研究仪器计划的奖项将使哈维穆德学院能够获得激光系统,以支持金属中电子超快动力学以及超薄半导体和金属的非线性光学行为的研究。该系统将以一千赫兹的重复频率产生飞秒激光束。这将极大地促进泵浦探针测量来监测金属中光激发电子的非平衡分布。这些测量将提供有关金属中能量和动量散射率的信息,并允许与金属中电子动力学理论进行定量比较。通过连续谱产生和频移,激光系统将能够对半导体薄膜的非线性光学响应进行光谱表征,从而提供有关中心对称半导体中二次谐波产生的体和表面源强度的有价值的信息。本科生将接受有关操作这一最先进的飞秒激光设备的培训。它还将作为资源提供给克莱蒙特联盟的成员。该重大研究仪器计划的奖项将使哈维穆德学院能够获得激光系统,以支持金属中电子的超快动力学和超薄薄膜的非线性光学行为的研究半导体和金属。金属内移动电子的高密度导致电子在极快的时间尺度上相互作用。详细了解这些相互作用对于理解金属如何催化化学反应以及原子如何吸附在金属表面上非常重要。新的激光系统将使哈维穆德学院的研究人员能够对持续时间不超过 50 飞秒(1 fs = 10-15 s)的强激光脉冲引起的金属电子系统变化进行时间分辨测量。这些测量将提供有关金属中能量和动量散射率的信息,并允许与金属中电子动力学理论进行定量比较。激光系统可以提供有关半导体晶体结构和表面质量的有用信息。谐波响应的光谱研究将提供有关表面和体现象的相对重要性的有用信息,并将允许与材料非线性响应的计算进行详细比较。本科生将接受这种最新技术操作的培训艺术飞秒激光设施。它还将作为资源提供给克莱蒙特联盟的成员。

项目成果

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专利数量(0)

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Thomas Donnelly其他文献

Large-Scale Autonomous Flight With Real-Time Semantic SLAM Under Dense Forest Canopy
茂密林冠下实时语义 SLAM 大规模自主飞行
  • DOI:
    10.1109/lra.2022.3154047
  • 发表时间:
    2021-09-14
  • 期刊:
  • 影响因子:
    5.2
  • 作者:
    Xu Liu;Guilherme V. Nardari;F. Ojeda;Yuezhan Tao;Alex Zhou;Thomas Donnelly;Chao Qu;Steven W. Chen;R. Romero;C. J. Taylor;Vijay R. Kumar
  • 通讯作者:
    Vijay R. Kumar
Assessing Physical Activity Using Accelerometers in Youth with Duchenne Muscular Dystrophy
使用加速度计评估患有杜氏肌营养不良症的青少年的身体活动
  • DOI:
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    3.3
  • 作者:
    David Arteaga;Thomas Donnelly;Kimberly Crum;Larry W. Markham;Mary Killian;W. B. Burnette;J. Soslow;Maciej S. Buchowski
  • 通讯作者:
    Maciej S. Buchowski
Do joint-preserving hip procedures compromise subsequent total hip arthroplasty? A meta-analysis of complications, functional outcome and survivorship
保留关节的髋关节手术是否会影响随后的全髋关节置换术?
  • DOI:
    10.1051/sicotj/2024018
  • 发表时间:
    2024-06-07
  • 期刊:
  • 影响因子:
    1.6
  • 作者:
    En Lin Goh;Oliver R. Boughton;Thomas Donnelly;Colin G Murphy;James Cashman;Connor Green
  • 通讯作者:
    Connor Green
Optimum winter road maintenance: effect of pavement types on snow melting performance of road salts
最佳冬季道路养护:路面类型对路盐融雪性能的影响
  • DOI:
    10.1139/cjce-2016-0010
  • 发表时间:
    2016-08-25
  • 期刊:
  • 影响因子:
    1.4
  • 作者:
    S. Hossain;L. Fu;F. Hosseini;Matthew Muresan;Thomas Donnelly;Shahriar Kabir
  • 通讯作者:
    Shahriar Kabir
Field Investigation on the Effectiveness of Prewetting Strategy for Snow and Ice Control of Transportation Facilities
交通设施防冰雪预湿策略有效性的现场调查
  • DOI:
    10.1061/(asce)cr.1943-5495.0000101
  • 发表时间:
    2016-01-27
  • 期刊:
  • 影响因子:
    2
  • 作者:
    S. Hossain;L. Fu;Thomas Donnelly;Z. Lamb;Matthew Muresan
  • 通讯作者:
    Matthew Muresan

Thomas Donnelly的其他文献

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{{ truncateString('Thomas Donnelly', 18)}}的其他基金

RUI: Collaborative Research: An Experimental Study of Relativistic, Stochastic Heating of Electrons During the Irradiation of Wavelength-scale Plasmas by a Strong-Laser Field
RUI:合作研究:强激光场照射波长尺度等离子体期间电子相对论随机加热的实验研究
  • 批准号:
    1301823
  • 财政年份:
    2013
  • 资助金额:
    $ 22.78万
  • 项目类别:
    Continuing Grant
RUI: Collaborative Research: Collisionless Heating During Strong Field Irradiation of Wavelength-scale Particles
RUI:合作研究:波长尺度粒子强场照射过程中的无碰撞加热
  • 批准号:
    0757989
  • 财政年份:
    2008
  • 资助金额:
    $ 22.78万
  • 项目类别:
    Continuing Grant
RUI: Collaborative Research: Enhancement of Relativistic Nonlinear Interactions Using Wavelength-scale Particles
RUI:合作研究:使用波长尺度粒子增强相对论非线性相互作用
  • 批准号:
    0456898
  • 财政年份:
    2005
  • 资助金额:
    $ 22.78万
  • 项目类别:
    Continuing Grant
Purchase of Atomic Absorption Spectrophotometer
购买原子吸收分光光度计
  • 批准号:
    8319506
  • 财政年份:
    1984
  • 资助金额:
    $ 22.78万
  • 项目类别:
    Standard Grant
Travel to Attend: Eighth Caribbean Geological Conference, 07/18-24/77
前往参加:第八届加勒比地质会议,07/18-24/77
  • 批准号:
    7721308
  • 财政年份:
    1977
  • 资助金额:
    $ 22.78万
  • 项目类别:
    Standard Grant
Geological and Geophysical Studies of the Motagua Suture Zone, Eastern Guatemala
危地马拉东部莫塔瓜缝合带的地质和地球物理研究
  • 批准号:
    7613357
  • 财政年份:
    1976
  • 资助金额:
    $ 22.78万
  • 项目类别:
    Standard Grant
Chemical and Mineralogical Studies of Deep Sea Sediments
深海沉积物的化学和矿物学研究
  • 批准号:
    7413196
  • 财政年份:
    1974
  • 资助金额:
    $ 22.78万
  • 项目类别:
    Standard Grant

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  • 批准号:
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MRI: Acquisition of an ultrafast amplified laser system for nonlinear optics and time-resolved spectroscopic studies of condensed matter systems
MRI:获取用于非线性光学和凝聚态系统的时间分辨光谱研究的超快放大激光系统
  • 批准号:
    1827846
  • 财政年份:
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