Fresnel diffraction by circular and serrated apertures illuminated with an ultrashort pulsed-laser beam

被引：59
|
作者：
Gu, M
Gan, XS
机构：
[1] Department of Physical Optics, University of Sydney, NSW
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1996年 / 13卷 / 04期
关键词：
D O I：
10.1364/JOSAA.13.000771
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Fresnel diffraction patterns by circular and serrated apertures under ultrashort pulsed-laser illumination are investigated in detail. A comparison of the diffraction patterns for pulsed and continuous wave illuminations reveals that an ultrashort pulsed beam of 10 fs can result in a significant effect on the distribution of the intensity. As a result a uniform intensity distribution in the transverse direction of the beam can be achieved as a result of the interference of the different frequency components within the pulsed beam. The interference fringes caused by the wavelets originating from the diffraction aperture can be further reduced when a serrated aperture is used. (C) 1996 Optical Society of America
引用
收藏
页码：771 / 778
页数：8
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