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交叉传播构型的和频振动光谱
付力1, 陈顺利1,2, 干为2, 王鸿飞1
1.美国能源部西北太平洋国家实验室环境分子科学研究所, 里奇兰 99352;2.中国科学院新疆理化技术研究所环境科学和技术实验室, 乌鲁木齐 830011
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DOI:10.1063/1674-0068/29/cjcp1512248
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基金项目:
Cross-Propagation Sum-Frequency Generation Vibrational Spectroscopy
Li Fu1, Shun-li Chen1,2, Wei Gan2, Hong-fei Wang1
1.William R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, 902 Battelle Boulevard, P. O. Box 999, Richland, WA 99352, USA;2.Laboratory of Environmental Science and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi 830011, China
Abstract:
Here we report the theory formulation and the experiment realization of sum-frequency generation vibrational spectroscopy (SFG-VS) in the cross-propagation (XP) geometry or configuration. In the XP-SFG-VS, the visible and the infrared (IR) beams in the SFG experiment are delivered to the same location on the surface from visible and IR incident planes perpendicular to each other, avoiding the requirement to have windows or optics to be transparent to both the visible and IR frequencies. Therefore, the XP geometry is applicable to study surfaces in the enclosed vacuum or high pressure chambers with far infrared (FIR) frequencies that can directly access the metal oxide and other lower frequency surface modes, with much broader selection of visible and IR transparent window materials. The potential applications include surface science, material science, fundamental catalytic sciences, as well as low temperature molecular sciences, etc.
Key words:  Sum-frequency generation  Vibrational spectroscopy  Co-propagation  Counter-propagation  Cross-propagation