Measuring extinction with digital holography: nonspherical particles and experimental validation
Measuring extinction with digital holography: nonspherical particles and experimental validation
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DOI：
10.1364/ol.42.001011
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发表时间：
2017-03-01
期刊：
影响因子：
3.6
通讯作者：
Anderson, Peter A.
中科院分区：
文献类型：
--
作者：
Berg, Matthew J.;Subedi, Nava R.;Anderson, Peter A.
通过模拟和实验，这封信展示了如何从数字全息图中提取粒子的消光截面。球形和非球形颗粒被认为涵盖了近五个数量级的横截面值的范围。提取的横截面与真实值的误差通常小于10%。它还示出，全息图包含一个足够大的角度范围内的散射光产生的吸收截面的估计。(C)2017美国光学学会
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