Biomedical Engineering Department, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.
Opt Lett. 2011 May 1;36(9):1596-8. doi: 10.1364/OL.36.001596.
Rigorous numerical modeling of optical systems has attracted interest in diverse research areas ranging from biophotonics to photolithography. We report the full-vector electromagnetic numerical simulation of a broadband optical imaging system with partially coherent and unpolarized illumination. The scattering of light from the sample is calculated using the finite-difference time-domain (FDTD) numerical method. Geometrical optics principles are applied to the scattered light to obtain the intensity distribution at the image plane. Multilayered object spaces are also supported by our algorithm. For the first time, numerical FDTD calculations are directly compared to and shown to agree well with broadband experimental microscopy results.
严格的光学系统数值建模吸引了生物光子学到光刻等多个研究领域的兴趣。我们报告了具有部分相干和非偏振照明的宽带光学成像系统的全矢量电磁数值模拟。使用有限差分时域（FDTD）数值方法计算来自样品的光散射。应用几何光学原理对散射光进行处理，以获得像平面上的强度分布。我们的算法还支持多层物体空间。首次进行了数值 FDTD 计算，并直接与宽带实验显微镜结果进行了比较，结果表明两者吻合良好。
