Xu Min, Alfano R R
Institute for Ultrafast Spectroscopy and Lasers, New York State Center of Advanced Technology for Ultrafast Photonics, The City College and Graduate Center of City University of New York, New York, New York 10031, USA.
Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Dec;72(6 Pt 2):065601. doi: 10.1103/PhysRevE.72.065601. Epub 2005 Dec 16.
Circular polarization memory of light multiply scattered by Mie particles is investigated. The mechanism of randomization of helicity is found, in general, to dominate light circular depolarization by particles of large size or a high refractive index while the mechanism of randomization of direction dominates for small particles of a lower refractive index. The characteristic length for circular polarized light to lose its helicity is determined for Mie scatterers of arbitrary size and refractive index and is used successfully to analyze circular depolarization of light transmission through a slab. Circular polarization memory of light is found to be most pronounced for not only large soft particles but also particles of smaller size and a high refractive index.
研究了由米氏粒子多次散射的光的圆偏振记忆。一般来说，发现螺旋度随机化机制在大尺寸或高折射率粒子引起的光圆偏振退偏中占主导地位，而方向随机化机制在低折射率小粒子中占主导地位。确定了任意尺寸和折射率的米氏散射体使圆偏振光失去其螺旋度的特征长度，并成功地用于分析光透过平板的圆偏振退偏。发现光的圆偏振记忆不仅在大的软粒子中最为明显，而且在尺寸较小和高折射率的粒子中也最为明显。
