| 通过尘障后的激光束特征 |
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| 引用本文： | 吴健,李晓敏.通过尘障后的激光束特征[J].电子科技大学学报(社会科学版),1992(1). |
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| 作者姓名： | 吴健 李晓敏 |
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| 作者单位： | 电子科技大学应用物理所，江汉石油学院电子系 |
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| 摘 要： | 从辐射亮度方程出发,推导了在大粒子近似条件下,激光束通过尘障以后约化通量密度和漫射通量密度的表达式,并在四个常用激光波长上作了数值计算.结果表明,当散射粒子浓度较大时,尘障后表面上的漫射通量密度通常比约化通量密度高很多,且散布在较宽的范围内.随着光束远离尘障,漫射通量密度迅速减小,约化通量密度重新占据主导地位.
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| 关 键 词： | 粒子光学 气溶胶 尘障 激光束 |
THE FEATURE OF THE LASER BEAM THROUGH A DUST LAYER |
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| Wu Jian Li Xiaoming.THE FEATURE OF THE LASER BEAM THROUGH A DUST LAYER[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),1992(1). |
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| Authors: | Wu Jian Li Xiaoming |
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| Institution: | Chengdu 610054 Inst.of Applied Physics UEST of China |
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| Abstract: | The expressions of the reduced incident and difusion intensities are deduced which are produced by a laser beam propagating through a dust layer,and numeral data are calculated on four laser wavelengths.It is concluded that on the back surface of the dust layer, diffusion intensities are usually higher than reduced incident and spread on a quite broad space.As the increase of the distance from the back surface,the diffusion intensities decrease rapidly,the reduced incident intensities dominate again. |
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| Keywords: | particle optics aerosol dust layer laser beam |
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