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X-ray and optical wave mixing

机译:X射线和光波混合

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摘要

Light-matter interactions are ubiquitous, and underpin a wide range of basic research fields and applied technologies. Although optical interactions have been intensively studied, their microscopic details are often poorly understood and have so far not been directly measurable. X-ray and optical wave mixing was proposed nearly half a century ago as an atomic-scale probe of optical interactions but has not yet been observed owing to a lack of sufficiently intense X-ray sources. Here we use an X-ray laser to demonstrate X-ray and optical sum-frequency generation. The underlying nonlinearity is a reciprocal-space probe of the optically induced charges and associated microscopic fields that arise in an illuminated material. To within the experimental errors, the measured efficiency is consistent with first-principles calculations of microscopic optical polarization in diamond. The ability to probe optical interactions on the atomic scale offers new opportunities in both basic and applied areas of science.
机译:光与物质的相互作用无处不在,并支撑着广泛的基础研究领域和应用技术。尽管已经对光学相互作用进行了深入研究,但对它们的微观细节往往知之甚少,到目前为止还不能直接测量。 X射线和光波混合是近半个世纪前提出的,它是光学相互作用的原子级探针,但由于缺乏足够强的X射线源,至今尚未被观察到。在这里,我们使用X射线激光来演示X射线和光学和频的生成。潜在的非线性是在照明材料中出现的光感应电荷和相关的微观场的倒数空间探针。在实验误差范围内,测得的效率与金刚石微观光学偏振的第一性原理计算相符。探测原子级光学相互作用的能力为科学的基础领域和应用领域提供了新的机会。

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  • 来源
    《Nature》 |2012年第7413期|p.603-608|共6页
  • 作者单位

    Advanced Light Source Division,Lawrence Berkeley National Laboratory,Berkeley,California 94720,USA;

    Linac Coherent Light Source,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

    Institut de Physique de Rennes,UMR 6251 UR1-CNRS,University Rennes 1,35042 Rennes Cedex,France;

    JILA,National Institute of Standards and Technology and University of Colorado,Boulder,Colorado 80309,USA;

    Department of Physics,University of California,Berkeley,California 94720,USA,Materials Sciences Division,Lawrence Berkeley National Laboratory,Berkeley,California 94720,USA;

    Linac Coherent Light Source,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

    Linac Coherent Light Source,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

    Linac Coherent Light Source,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

    Linac Coherent Light Source,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

    Linac Coherent Light Source,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

    PULSE Institute,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

    PULSE Institute,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

    Departrrient of Applied Physics,Stanford University,Stanford,California 94305,USA,PULSE Institute,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

    Departrrient of Applied Physics,Stanford University,Stanford,California 94305,USA;

    PULSE Institute,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA,Departrrient of Applied Physics,Stanford University,Stanford,California 94305,USA,Department of Photon Science,Stanford University,Stanford,California 94305,USA;

    Departrrient of Applied Physics,Stanford University,Stanford,California 94305,USA,Department of Electrical Engineering,Stanford University,Stanford,California 94305,USA;

    Linac Coherent Light Source,SLAC National Accelerator Laboratory,Menlo Park,California 94025,USA;

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