IBM的W.P.Ambrose和W.E.Moerner最近首次观察到晶体中单个杂质分子的荧光激发光谱随时间的变化。观察的体系是1.5K温度下对-三联苯晶体中的并五苯分子。过去进行这种有关共振频率的研究时,所谓的光谱弥散效应往往是数以百万计的杂质分子作用的统计平均。Ambrose等用的这种技术可以观察到单个杂质分子的共振频率的位移,从而可以成为晶体中某个局部环境的一种探针,因为共振光谱的 The first time that IBM W.P. Ambrose and W.E. Moerner observed the fluorescence excitation spectra of individual impurity molecules in a crystal over time. The system observed was pentacene in p-terphenyl crystals at 1.5K. In the past when conducting such studies on resonance frequencies, the so-called spectral dispersion effect is often the statistical average of the effects of millions of impurity molecules. The technique used by Ambrose et al. Can observe the shift of the resonance frequency of a single impurity molecule so that it can become a probe of a certain local environment in the crystal because the resonance spectrum