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Proceedings Paper

Diffuse characteristics study of laser target board using Monte Carlo simulation
Author(s): Pengling Yang; Yong Wu; Zhenbao Wang ; Mengmeng Tao; Junjie Wu; Ping Wang; Yan Yan; Lei Zhang; Gang Feng; Jinghui Zhu; Guobin Feng
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Paper Abstract

In this paper, Torrance-Sparrow and Oren-Nayar model is adopt to study diffuse characteristics of laser target board. The model which based on geometric optics, assumes that rough surfaces are made up of a series of symmetric V-groove cavities with different slopes at microscopic level. The distribution of the slopes of the V-grooves are modeled as beckman distribution function, and every microfacet of the V-groove cavity is assumed to behave like a perfect mirror, which means the reflected ray follows Fresnel law at the microfacet. The masking and shadowing effects of rough surface are also taken into account through geometric attenuation factor. Monte Carlo method is used to simulate the diffuse reflectance distribution of the laser target board with different materials and processing technology, and all the calculated results are verified by experiment. It is shown that the profile of bidirectional reflectance distribution curve is lobe-shaped with the maximum lies along the mirror reflection direction. The width of the profile is narrower for a lower roughness value, and broader for a higher roughness value. The refractive index of target material will also influence the intensity and distribution of diffuse reflectance of laser target surface.

Paper Details

Date Published: 16 May 2013
PDF: 10 pages
Proc. SPIE 8796, 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), 87960E (16 May 2013); doi: 10.1117/12.2011082
Show Author Affiliations
Pengling Yang, Northwest Institute of Nuclear Technology (China)
Tsinghua Univ. (China)
Yong Wu, Northwest Institute of Nuclear Technology (China)
Zhenbao Wang , Northwest Institute of Nuclear Technology (China)
Mengmeng Tao, Northwest Institute of Nuclear Technology (China)
Junjie Wu, Northwest Institute of Nuclear Technology (China)
Tsinghua Univ. (China)
Ping Wang, Northwest Institute of Nuclear Technology (China)
Yan Yan, Northwest Institute of Nuclear Technology (China)
Lei Zhang, Northwest Institute of Nuclear Technology (China)
Gang Feng, Northwest Institute of Nuclear Technology (China)
Jinghui Zhu, Northwest Institute of Nuclear Technology (China)
Guobin Feng, Northwest Institute of Nuclear Technology (China)


Published in SPIE Proceedings Vol. 8796:
2nd International Symposium on Laser Interaction with Matter (LIMIS 2012)
Stefan Kaierle; Jingru Liu; Jianlin Cao, Editor(s)

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