| 高斯光束对颗粒衍射测量的影响 |
| |
| 引用本文： | 杨初平,何振江,杨冠玲. 高斯光束对颗粒衍射测量的影响[J]. 激光技术, 2002, 26(4): 311-313 |
| |
| 作者姓名： | 杨初平 何振江 杨冠玲 |
| |
| 作者单位： | 1.华南师范大学物理系, 广州, 510631 |
| |
| 基金项目： | 广东省环保局，广州市环保局资助项目 |
| |
| 摘 要： | 理论推导了高斯光束的圆孔夫琅和费衍射结果并与平行平面波的圆孔夫琅和费衍射结果进行比较,数值计算和理论分析表明,当激光光束的束宽半径远大于圆孔半径时,两者的衍射结果是非常接近的;当激光光束的束宽半径接近于圆孔半径时,高斯光束的衍射偏离平行光衍射。考虑光强的高斯分布,给出了某一粒度颗粒群的衍射结果。
|
| 关 键 词： | 高斯光束 粒度测量 夫琅和费衍射 |
| 文章编号： | 1001-3806(2002)04-0311-03 |
| 收稿时间： | 2001-04-03 |
| 修稿时间： | 2001-04-03 |
The effect of Gaussian beam on particle size measurement |
| |
| Yang Chuping,He Zhenjiang,Yang Guanling. The effect of Gaussian beam on particle size measurement[J]. Laser Technology, 2002, 26(4): 311-313 |
| |
| Authors: | Yang Chuping He Zhenjiang Yang Guanling |
| |
| Abstract: | The Fraunhofer diffraction of Gaussian beam by a circular aperture are derived and are compared to that of plane wave in this paper. Through theoretical and numerical analyze ,it shows that both results are the similar while the radius of Gaussian beam is much larger than the radius of circlar aperture,otherwise,they are different. Then the Fraunhofer diffraction of Gaussian beam by a group of particles with the same size are given. |
| |
| Keywords: | Gaussian beam particle size measurement Fraunhofer diffraction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《激光技术》浏览原始摘要信息 |
|
点击此处可从《激光技术》下载全文 |
|
