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首页> 外文会议>Conference on high-performance optical spectrometry >Excitation spectroscopy on single molecules in solids at low temperatures
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Excitation spectroscopy on single molecules in solids at low temperatures

机译：低温下固体中单分子上的激光光谱

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By severely reducing the number of solute molecules in the illuminated sample, the optical resonances of individual molecules can be resolved in a fluorescence excitation spectrum. Single molecule lines can be studied as a function of time and temperature: sudden jumps of their resonance frequencies are due to spectral diffusion processes. The signal from a single molecule displays specific correlations which makes time-resolved studies possible. Here, emphasis is put on photon-bunching arising from intersystem crossing (ISC). ISC rates are deduced from the observed decay rates of the correlation and are found to differ from molecule to molecule. A single molecule is a truly local probe of its environment by means of which fundamental studies of the matrix dynamics as well as nanophysics experiments may be undertaken.
机译：通过严重减少照射样品中的溶质分子的数量，可以在荧光激发光谱中分解各分子的光学共振。单个分子线可以作为时间和温度的函数研究：它们的共振频率的突然跳跃是由于光谱扩散过程。来自单个分子的信号显示特定的相关性，其使得可以进行时间解决的研究。在这里，强调来自Intersystem交叉（ISC）引起的光子束缚。从观察到的相关性的衰变率推导出ISC率，发现与分子不同。单个分子是其环境的真正局部探针，通过该环境的基本研究以及纳米物理学实验可以进行的基本研究。

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