Simulation of optical caustics associated with the tertiary rainbow of oblate droplets

Guan Lulu; Yu Haitao; Shen Jianqi; Tropea Cameron

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Simulation of optical caustics associated with the tertiary rainbow of oblate droplets

机译：与第三级圆弧线彩虹相关的光学焦化仿真

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In this paper, a vector ray tracing (VRT) model is used to simulate optical caustic structures, including rainbow and hyperbolic umbilic (HU) fringes, in the tertiary rainbow region of light scattering from oblate spheroidal droplets. In order to apply the optical caustic structures to particle diagnostics, the evolution of rainbow and HU fringes with an increase in the aspect ratio of oblate spheroidal droplets is investigated in detail, and the curvature of rainbow fringes are calculated. Next, on the basis of the VRT model, the location of cusp caustics is calculated and compared with theoretical prediction. (C) 2016 Optical Society of America.

机译：在本文中，矢量射线跟踪（VRT）模型用于模拟光学苛性结构，包括彩虹和双曲脐（HU）条纹，在来自圆形球体液滴的光散射的三级彩虹区域中。为了将光学苛性结构应用于粒子诊断，详细研究了彩虹和Hu条纹的横向比的纵横比的渐变，并计算彩虹条纹的曲率。接下来，在VRT模型的基础上，计算CUSP焦质的位置并与理论预测进行比较。（c）2016年光学学会。

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《Applied optics》 |2016年第23期|共5页
作者
Guan Lulu; Yu Haitao; Shen Jianqi; Tropea Cameron;
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Univ Shanghai Sci &

Technol Coll Sci Shanghai 200093 Peoples R China;

Univ Shanghai Sci &

Technol Coll Sci Shanghai 200093 Peoples R China;

Univ Shanghai Sci &

Technol Coll Sci Shanghai 200093 Peoples R China;

Tech Univ Darmstadt Ctr Smart Interfaces Inst Fluid Mech &

Aerodynam Alarich Weiss Str 10 D-64287 Darmstadt Germany;

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Simulation of optical caustics associated with the tertiary rainbow of oblate droplets

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