Facile collection of two-dimensional electronic spectra using femtosecond pulse-shaping technology
Facile collection of two-dimensional electronic spectra using femtosecond pulse-shaping technology
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DOI：
10.1364/oe.15.016681
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发表时间：
2007-12-10
期刊：
影响因子：
3.8
通讯作者：
Zanni, Martin T.
中科院分区：
文献类型：
--
作者：
Grumstrup, Erik M.;Shim, Sang-Hee;Zanni, Martin T.
这封信报告了一种使用光学工具收集二维电子（2D-E）光谱的简单方法，许多研究超快光谱和量子控制的研究小组都使用这种光学工具。在我们的方法中，使用飞秒脉冲整形器产生一对相位稳定的共线激光脉冲，然后将其入射到气体或液体样品上。脉冲对之后是一个光谱分辨的超短探测脉冲。使用相位和幅度整形增加共线脉冲之间的延迟，并在傅里叶变换后生成2D-E频谱。部分共线光束的几何形状导致完全相位吸收光谱无相位扭曲。我们的方法比标准的非共线光束几何形状更容易实现，后者对相位稳定具有挑战性，需要复杂的校准。使用脉冲整形，现在在2D-E光谱和相干控制方面也可以进行许多新的实验。(C) 2007年美国光学学会。
This letter reports a straightforward means of collecting two-dimensional electronic (2D-E) spectra using optical tools common to many research groups involved in ultrafast spectroscopy and quantum control. In our method a femtosecond pulse shaper is used to generate a pair of phase stable collinear laser pulses which are then incident on a gas or liquid sample. The pulse pair is followed by an ultrashort probe pulse that is spectrally resolved. The delay between the collinear pulses is incremented using phase and amplitude shaping and a 2D-E spectrum is generated following Fourier transformation. The partially collinear beam geometry results in perfectly phased absorptive spectra without phase twist. Our approach is much simpler to implement than standard non-collinear beam geometries, which are challenging to phase stabilize and require complicated calibrations. Using pulse shaping, many new experiments are now also possible in both 2D-E spectroscopy and coherent control. (C) 2007 Optical Society of America.