Energy exchange between the Cartesian components of a paraxial beam in a uniaxial crystal

被引:15
作者
Ciattoni, A [1 ]
Cincotti, G
Palma, C
Weber, H
机构
[1] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy
[2] Ist Nazl Fis Mat, Unita Rome 3, Rome, Italy
[3] Univ Roma Tre, Dipartimento Ingn Elettron, I-00146 Rome, Italy
[4] Tech Univ Berlin, Inst Opt, D-10623 Berlin, Germany
关键词
D O I
10.1364/JOSAA.19.001894
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The evolution of the optical power associated with the Cartesian components of a paraxial beam propagating along the optical axis in a uniaxial crystal is investigated. The energy exchange is found to undergo a saturation that is due to both diffraction and coupling between the x- and y-field components; for linearly polarized circularly symmetric input beams, the asymptotic power exchange always amounts to a quarter of the total power. The general results are applied to the case of astigmatic Gaussian beams, which admits of a fully analytical description. The case of finite length crystals is also considered. (C) 2002 Optical Society of America.
引用
收藏
页码:1894 / 1900
页数:7
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