Effective lensing effects in parametric frequency conversion

被引：50
作者：
Conti, C
Trillo, S
Di Trapani, P
Kilius, J
Bramati, A
Minardi, S
Chinaglia, W
Valiulis, G
机构：
[1] Univ Ferrara, Dept Engn, I-44100 Ferrara, Italy
[2] Ist Nazl Fis Mat, I-00146 Rome, Italy
[3] Univ Insubria, Ist Nazl Fis Mat, I-22100 Como, Italy
[4] Univ Insubria, Dept Chem Phys & Math Sci, I-22100 Como, Italy
[5] Vilnius State Univ, Dept Quantum Elect, LT-2040 Vilnius, Lithuania
来源：
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2002年 / 19卷 / 04期
关键词：
D O I：
10.1364/JOSAB.19.000852
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We show that, in the high wave-vector-mismatch (cascading) limit, the well-known paraxial description of parametric frequency conversion in quadratic media entails effective lensing effects, which can have a self-focusing or a self-defocusing nature, critically depending on the mismatch sign, the selected wave, and the launching condition (second-harmonic generation or downconversion). Numerical and experimental evidence of this behavior is reported. (C) 2002 Optical Society of America.
引用
收藏
页码：852 / 859
页数：8
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