Focal Depth of an Apodized Focusing Optical System
Focal Depth of an Apodized Focusing Optical System
复制标题
变迹聚焦光学系统的焦深
DOI：
10.1117/1.1928282
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
S. Zhuang
中科院分区：
文献类型：
--
作者：
Xiumin Gao;Jinsong Li;S. Zhuang
从理论上研究了在均匀光强分布光束和高斯光束两种入射光场中，变迹聚焦光学系统的轴向光强分布和焦深。低数值孔径和高数值孔径的光学系统被认为是。数值结果表明，通过改变聚焦光学系统中切趾器的几何参数和透射率，可以实现对焦深的调节。当采用高斯光束作为入射光束时，束腰宽度也影响焦深。焦深的可调范围是非常可观的。(c)2005年，由光学仪器工程师学会（Society of Photo-Optical Instrumentation Engineers）主办。
The axial intensity distribution and focal depth of an apoclized focusing optical system are theoretically investigated with two kinds of incident light fields: a uniform-intensity-distribution beam and a Gaussian beam. Both a low-numerical-aperture and a high-numerical-aperture optical system are considered. Numerical results show that the depth of focus can be adjusted by changing the geometrical parameters and transmissivity of the apodizer in the focusing optical system. When a Gaussian beam is employed as the incident beam, the waist width also affects the depth of focus. The tunable range of the focal depth is very considerable. (c) 2005 Society of Photo-Optical Instrumentation Engineers.