Imaging properties of coherent anti-Stokes Raman scattering microscope

• 来源期刊: 中国物理（英文版）
• 关键词: microscope coherent anti-Stokes Raman scattering Hertzian dipole Green function
• 年，卷（期）: 2005,（5）
• 页码范围: 935-941
• 页数: 7页
• 语种: 英文

摘要

The coherent anti-Stokes Raman scattering (CARS) microscope with the combination of confocal and CARS techniques is a remarkable alternative for imaging chemical or biological specimens that neither fluoresce nor tolerate labelling. CARS is a nonlinear optical process, the imaging properties of CARS microscopy will be very different from the conventional confocal microscope. In this paper, the intensity distribution and the polarization property of the optical field near the focus was calculated. By using the Green function, the precise analytic solution to the wave equation of a Hertzian dipole source was obtained. We found that the intensity distributions vary considerably with the different experimental configurations and the different specimen shapes. So the conventional description of microscope (e.g. the point spread function) will fail to describe the imaging properties of the CARS microscope.