论文标题
非连续性光学二维相干光谱的快速循环
Fast phase cycling in non-collinear optical two-dimensional coherent spectroscopy
论文作者
论文摘要
由于光学二维相干光谱（2DC）扩展到更广泛的应用范围，因此提高光学2DC的检测灵敏度至关重要。我们通过使用液晶相位延迟器调节两种激发脉冲的相，在非结合光学2DC实现中开发了快速循环方案。可以通过结合使用适当的相配置测量的两个或四个干涉图来消除信号中的背景。该方法的有效性在原子蒸气的光学2DC测量中得到了验证。这种快速循环方案将在需要增强检测灵敏度的新型新兴应用中启用光学2DC。
As optical two-dimensional coherent spectroscopy (2DCS) is extended to a broader range of applications, it is critical to improve the detection sensitivity of optical 2DCS. We developed a fast phase-cycling scheme in a non-collinear optical 2DCS implementation by using liquid crystal phase retarders to modulate the phases of two excitation pulses. The background in the signal can be eliminated by combining either two or four interferograms measured with a proper phase configuration. The effectiveness of this method was validated in optical 2DCS measurements of an atomic vapor. This fast phase-cycling scheme will enable optical 2DCS in novel emerging applications that require enhanced detection sensitivity.
