Side-lobeless far-field spectrum of a short pulse from a circular aperture with Gaussian form of transmittance

被引：1
|
作者：
Han, Pin [1 ]
Hwang, Hone-Ene [2 ]
机构：
[1] Natl Chung Hsing Univ, Inst Precis Engn, Taichung 402, Taiwan
[2] Chung Chou Inst Technol, Dept Elect Engn, Yuanlin 510, Taiwan
来源：
OPTIK | 2009年 / 120卷 / 16期
关键词：
Gaussian pulse; Far-field (Fraunhofer) diffraction; Spectral intensity; Fresnel diffraction integral; Gaussian form transmittance; DIFFRACTION CHARACTERISTICS; INTENSITY CHARACTERISTICS; BEAM; SWITCHES; INCIDENT; LIGHT; SLIT;
D O I：
10.1016/j.ijleo.2008.03.012
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The spectrum change of a Gaussian pulse in the far field is studied with the Fresnel diffraction integral when it is incident on an aperture with Gaussian form transmittance. It is found that the side-lobes of the diffracted spectral intensity, which exist in a normal circular aperture with unit transmittance, can be eliminated completely under such a condition. Also, the red shift and blue shift of the spectral intensity maximum of the incident pulse are presented. (C) 2008 Elsevier GmbH. All rights reserved.
引用
收藏
页码：809 / 813
页数：5
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