Backus Ellen H G, Garrett-Roe Sean, Hamm Peter
Physikalisch-Chemisches Institut, Universität Zürich, Zürich, Switzerland.
Opt Lett. 2008 Nov 15;33(22):2665-7. doi: 10.1364/ol.33.002665.
A rigorous method is presented to measure and adjust the phase difference between the two pulse pairs used in heterodyne-detected 2D-IR spectroscopy with an accuracy better than |Deltaphi|=0.1 rad. The method, which can easily be automated, avoids the otherwise tedious measurement of the much weaker pump-probe spectrum as a reference, which is the commonly used approach to phase 2D-IR spectra in a postprocessing step.
本文提出了一种精确的方法，用于测量和调整外差检测二维红外光谱中使用的两个脉冲对之间的相位差，其精度优于|Δφ| = 0.1弧度。该方法易于自动化，避免了以较弱的泵浦-探测光谱作为参考进行繁琐的测量，而这是后处理步骤中二维红外光谱相位测量的常用方法。
