Measuring extinction with digital holography: nonspherical particles and experimental validation

被引：18
|
作者：
Berg, Matthew J. [1 ]
Subedi, Nava R. [2 ]
Anderson, Peter A. [1 ]
机构：
[1] Kansas State Univ, Dept Phys, 1228 North 17th St, Manhattan, KS 66506 USA
[2] Mississippi State Univ, Dept Phys, 355 Lee Blvd, Starkville, MS 39762 USA
来源：
OPTICS LETTERS | 2017年 / 42卷 / 05期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1364/OL.42.001011
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Through simulations and experiment, this Letter shows how a particle's extinction cross section can be extracted from a digital hologram. Spherical and nonspherical particles are considered covering a range of cross-sectional values of nearly five orders of magnitude. The extracted cross sections are typically less than 10% in error from the true values. It is also shown that holograms encompassing a sufficiently large angular range of scattered light yield an estimate for the absorption cross section. (C) 2017 Optical Society of America
引用
收藏
页码：1011 / 1014
页数：4
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