Chung Chao-Yu, Hsu Julie, Mukamel Shaul, Potma Eric O
Department of Chemistry, University of California, Irvine Irvine, CA 92697, USA.
Phys Rev A. 2013 Mar 26;87(3). doi: 10.1103/physreva.87.033833.
We study the role of geometry dependent phase shifts in stimulated coherent spectroscopy, a special class of heterodyne optical spectroscopy techniques. We generalize the theoretical description of stimulated spectroscopy to include spatial phase effects, and consider the measured material response for several representative excitation and detection configurations. Using stimulated Raman scattering microscopy as an example, we show that different components of the material response are measured depending the position of the object in focus. We discuss the implications of the position dependent phase in stimulated coherent microscopy and point out a detection configuration in which its effects are minimized.
我们研究了几何相关相移在受激相干光谱学中的作用，受激相干光谱学是外差光学光谱技术中的一类特殊技术。我们将受激光谱学的理论描述进行推广，以纳入空间相位效应，并考虑了几种代表性激发和检测配置下所测量的材料响应。以受激拉曼散射显微镜为例，我们表明，根据聚焦物体的位置不同，所测量的材料响应的不同分量也不同。我们讨论了受激相干显微镜中位置相关相位的影响，并指出了一种能将其影响最小化的检测配置。
