Spatial-temporal structure of the femtosecond third harmonic generation in photonic-crystal fibers

被引：9
作者：
Kalashnikov, Vladimir L.
Sorokin, Evgeni
Sorokina, Irina T.
机构：
[1] Vienna Univ Technol, Inst Photon, A-1040 Vienna, Austria
[2] Norwegian Univ Sci & Technol, Dept Phys, N-7491 Trondheim, Norway
来源：
OPTICS EXPRESS | 2007年 / 15卷 / 18期
基金：
奥地利科学基金会;
关键词：
FORSTERITE LASER-PULSES; SUPERCONTINUUM GENERATION; HARMONIC-GENERATION; SOLITARY WAVES; SOLITONS;
D O I：
10.1364/OE.15.011301
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We analyze the third harmonic generation by the supercontinuum at 1.5 mu m in nonlinear-glass microstructured fibers. The numerical model includes the real field dynamics and allows analyzing the spectral as well as the temporal structure of the generated field. The calculated third harmonic and supercontinuum spectra are compared with the experiment in the SF6 glass PCF pumped by a femtosecond Cr4+: YAG oscillator. The spectral structure of the third harmonic is composed of the 10-20 high-order modes excited at the phase matching points around 500-550 nm. The individual third harmonic modes have spectral widths of 2-4 nm. In the time domain, the third harmonic signal is a similar to 10-ps pulse with ps-scale slow modulation, containing subpicosecond ripples at its trailing edge. (C) 2007 Optical Society of America.
引用
收藏
页码：11301 / 11312
页数：12
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