Far-field spectral characterization of conical emission and filamentation in Kerr media

Far-field spectral characterization of conical emission and filamentation in Kerr media
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DOI：
10.1364/josab.22.000862
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发表时间：
2004-05
期刊：
Journal of The Optical Society of America B-optical Physics
影响因子：
1.9
通讯作者：
D. Faccio;P. Trapani;S. Minardi;A. Bramati;F. Bragheri;C. Liberale;V. Degiorgio;A. Dubietis;A. Matijošius
D. Faccio;P. Trapani;S. Minardi;A. Bramati;F. Bragheri;C. Liberale;V. Degiorgio;A. Dubietis;A. Matijošius
中科院分区：
物理与天体物理3区
文献类型：
--
作者：
D. Faccio;P. Trapani;S. Minardi;A. Bramati;F. Bragheri;C. Liberale;V. Degiorgio;A. Dubietis;A. Matijošius

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By use of an imaging spectrometer we map the far-field (theta-lambda) spectra of 200-fs optical pulses that have undergone beam collapse and filamentation in a Kerr medium. By studying the evolution of the spectra with increasing input power and by using a model based on an asymptotic linear superposition of stationary wave modes (rather than the exact instantaneous solution), we are able to trace a consistent model of optical beam collapse highlighting the interplay between conical emission, multiple pulse splitting, and other effects such as spatial chirp.