%0 Journal Article
%T The far-field properties of ultrashort pulsed beams with constant waist width in free space<br>等束宽超短脉冲光束的远场特性
%A 邹其徽
%A 吕百达
%J 物理学报
%D 2005
%I 
%X 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.
%K angular spectrum representation
%K complex analytical signal representation
%K ultrashort Gaussian pulsed beam with constant waist width<br>角谱法，
%K 复解析信号法，
%K 等束宽超短高斯脉冲光束
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=B874C756A455F4F3&yid=2DD7160C83D0ACED&vid=318E4CC20AED4940&iid=59906B3B2830C2C5&sid=14BF8A35C89C18AB&eid=826A42509C29609B&journal_id=1000-3290&journal_name=物理学报&referenced_num=4&reference_num=13