摘要
根据Collins公式得到了离轴高斯光束通过光学系统后的变换关系,分析了变换后光束强度分布的特点,结果表明变换后的光束为偏心高斯光束,进而导出了偏心高斯光束在垂直于传输方向上强度分布的近似表达式.最后以薄透镜系统为例,数值计算了该方向上的强度分布;以及不同位置处,偏心高斯光束与高斯光束强度分布的偏离程度,表明束腰平面上强度分布为高斯分布,随着考察面到束腰平面距离的增大,此偏离程度迅速变大.
The transmitted relation is deduced based on Gaussian beam passing through optics system,and intensity distribution of transmitted beams is analyzed,the results show that the intensity distribution of transmitted beams is decentered Gaussian beam,approximate analytical intensity distribution equations of decentered Gaussian beam is derived.For the optics system of thin convex lens,intensity distribution is numerical simulation;and departure degree of different position of Gaussian beam and decentered Gaussian beam are calculated,the results show that the intensity distribution is Gaussian beam on the beam waist plane,and the departure degree becomes increasing as long as the distance to beam waist position increasing.
出处
《西安工业学院学报》
2005年第1期76-79,共4页
Journal of Xi'an Institute of Technology
基金
国防科技重点实验室基金项目 (51 456 0 50 1 0 4DZ0 1 0 1 )
关键词
偏心高斯光束
高斯光束
光学系统
光强分布
decentered gaussian beams
gaussian beams
optical system
intensity distribution
