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等束宽超短脉冲光束的远场特性
引用本文:邹其徽,吕百达.等束宽超短脉冲光束的远场特性[J].物理学报,2005,54(12):5642-5647.
作者姓名:邹其徽  吕百达
作者单位:四川大学激光物理与化学研究所,成都 610064
摘    要:利用角谱法和复解析信号法推导出了等束宽超短高斯脉冲光束在远场的解析传输公式及其傅里叶谱.研究了若干个甚至一个光周期数的等束宽超短高斯脉冲光束的远场特性,并与等衍射长度超短高斯脉冲光束作了比较.研究表明,等束宽超短高斯脉冲光束在远场存在脉冲展宽、光谱变窄、离轴光谱红移、轴上光谱蓝移等特性. 关键词: 角谱法 复解析信号法 等束宽超短高斯脉冲光束

关 键 词:角谱法  复解析信号法  等束宽超短高斯脉冲光束
文章编号:1000-3290/2005/54(12)/5642-06
收稿时间:11 30 2004 12:00AM
修稿时间:7/8/2005 12:00:00 AM

The far-field properties of ultrashort pulsed beams with constant waist width in free space
Zou Qi-Hui,Lü Bai-Da.The far-field properties of ultrashort pulsed beams with constant waist width in free space[J].Acta Physica Sinica,2005,54(12):5642-5647.
Authors:Zou Qi-Hui  Lü Bai-Da
Institution:Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China
Abstract:By using the angular spectrum and complex analytic signal representations, the analytic propagation expression and its Fourier spectrum for ultrashort Gaussian pulsed beams with constant waist width in the far field are derived. The far-field properties of few- and single-cycle ultrashort Gaussian pulsed beams with constant waist width are studied, and compared with those of ultrashort Gaussian pulsed beams with constant diffraction length. The properties of pulse broadening, spectrum narrowing, off-axis spectrum redshift and on-axis spectrum blueshift are found for ultrashort Gaussian pulsed beams with constant waist width in the far field.
Keywords:angular spectrum representation  complex analytical signal representation  ultrashort Gaussian pulsed beam with constant waist width
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