Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
Opt Lett. 2010 Dec 15;35(24):4178-80. doi: 10.1364/OL.35.004178.
We introduce fully noncollinear coherent two-dimensional (2D) spectroscopy in the UV domain with an all-reflective and miniaturized setup design. Phase stability is achieved via pairwise beam manipulation, and the concept can be transferred to all wavelength regimes. Here we present results from an implementation that has been optimized for wavelengths between 250 and 375 nm. Interferometric measurements prove phase stability over several hours. We obtained 2D spectra of the nonpolar UV chromophore p-terphenyl in ethanol, excited with 50 fs pulses at 287 nm.
我们在紫外域中引入了完全非共线相干二维（2D）光谱学，采用全反射和小型化的装置设计。通过两两光束处理实现相位稳定性，并且该概念可以推广到所有波长范围。这里我们展示了针对 250nm 到 375nm 波长范围进行优化的实现结果。干涉测量证明了几个小时的相位稳定性。我们使用 287nm 的 50fs 脉冲激发乙醇中的非极性紫外生色团对三联苯，获得了 2D 光谱。
