On the diffraction of ultrashort pulses

被引:5
作者
Rozanov, NN [1 ]
机构
[1] Res Inst Laser Phys, St Petersburg 199034, Russia
[2] Tech Univ, St Petersburg State Inst Fine Mech & Opt, St Petersburg 197101, Russia
基金
俄罗斯基础研究基金会;
关键词
Electromagnetic wave diffraction - Electromagnetic waves - Fourier optics - Light reflection - Refractive index;
D O I
10.1134/1.1604439
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The diffraction of ultrashort pulses of electromagnetic radiation is considered in terms of the model of an initial Gaussian time pulse and a Gaussian beam. A criterion for the short pulse duration and the average pulse wavelength are introduced, and the diffraction length and angular divergence of radiation are estimated. Alone, with the general expression for a field, simple expressions for the case of the far zone are derived. The results obtained are compared with the simplified delta pulse model. (C) 2003 MAIK "Nauka/Interperiodica".
引用
收藏
页码:299 / 302
页数:4
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