“孔雀眼”波带片的长焦深特性研究  

Long focal depth characteristics of the “peacock eye” zone plate

作　　者：杨静[1] 高峰[1] 谢世伟[1] 肖啸[1] 杜惊雷[1] 

机构地区：[1]四川大学物理科学与技术学院,成都610064

出　　处：《激光技术》2003年第3期190-192,196,共4页Laser Technology

摘　　要：基于能量守恒原理 ,利用追迹法、计算机编码设计了用作长焦深元件的“孔雀眼”波带片。对其作为长焦深元件的两个重要参量———轴向光强分布和沿轴向一定范围内聚焦中心光斑大小的变化进行了模拟分析 ,得出了沿轴向一定范围内聚焦中心光斑大小基本恒定的结论。进行了实验验证 ,为实际应用这种长焦深元件提供了依据。Based on the energy conservation principle and the paraxial ray tracing method,the “peacock eye” zone plates are designed and encoded.The plates are used as the elements with long focal depth,whose two important parameters*#:the axial intensity distribution and the axial variation of the focused-central-spot size,are simulated and analyzed*#.At last,the constant central-spot size within a finite focal segment is concluded and the corresponding experimental results are also illustrated.

关 键 词：“孔雀眼”波带片 焦线 长焦深 

分 类 号：O439[机械工程—光学工程]