Free-space propagation of ultrashort pulses: space-time couplings in Gaussian pulse beams

被引：59

作者：

Caron, CFR ^{[1
]}

Potvliege, RM ^{[1
]}

机构：

[1] Univ Durham, Dept Phys, Durham DH1 3LE, England

来源：

JOURNAL OF MODERN OPTICS | 1999年 / 46卷 / 13期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1080/09500349908231378

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The importance of space-time couplings and the validity of the paraxial approximation are discussed for the case of ultrashort freely-propagating Gaussian pulses whose spectral components all have the same frequency-independent Rayleigh length. Simple closed-form expressions describing the electric field of such pulses are derived for model spectral distributions. Space-time couplings are found to be significant only for subcycle pulses or far from the focus.

引用

页码：1881 / 1891

页数：11

共 13 条

[1] Spectrum-induced changes in diffraction of pulsed optical beams [J].