Jung JaeHwang, Kim Jinhyung, Seo Min-Kyo, Park YongKeun
Opt Express. 2018 Mar 19;26(6):7701-7711. doi: 10.1364/OE.26.007701.
We present a method to measure the vector-field light scattering of individual microscopic objects. The polarization-dependent optical field images are measured with quantitative phase imaging at the sample plane, and then numerically propagated to the far-field plane. This approach allows the two-dimensional polarization-dependent angle-resolved light scattered patterns from individual object to be obtained with high precision and sensitivity. Using this method, we present the measurements of the polarization-dependent light scattering of a liquid crystal droplet and individual silver nanowires over scattering angles of 50°. In addition, the spectroscopic extension of the polarization-dependent angle-resolved light scattering is demonstrated using wavelength-scanning illumination.
我们提出了一种测量单个微观物体矢量场光散射的方法。通过在样品平面进行定量相位成像来测量偏振相关的光场图像,然后将其数值传播到远场平面。这种方法能够高精度、高灵敏度地获取单个物体的二维偏振相关角分辨光散射图案。利用该方法,我们展示了在50°散射角范围内对液晶微滴和单个银纳米线的偏振相关光散射测量。此外,还利用波长扫描照明展示了偏振相关角分辨光散射的光谱扩展。