Field-free molecular alignment detection by 4f coherent imaging

被引:0
作者
J. Houzet
F. Billard
E. Hertz
D. Chateau
F. Chaussard
B. Lavorel
O. Faucher
机构
[1] UMR 6303 CNRS-Université de Bourgogne,Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB)
来源
Applied Physics B | 2012年 / 108卷
关键词
Pump Pulse; Nonlinear Phase; Circular Aperture; Molecular Alignment; Phase Object;
D O I
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中图分类号
学科分类号
摘要
Time-resolved detection of field-free molecular alignment is investigated by phase contrast. The technique based on a 4f imager operating as an inverted Zernike spatial filter makes it possible to discriminate between positive and negative molecular alignment revivals produced in a linear molecule. The measurements are performed in a way that minimizes the contamination of the signal by the plasma generated during the aligning pulse. The observations are supported by a semi-analytical model, from which the degree of alignment produced at the beam focus is estimated.
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页码:897 / 902
页数:5
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