Phase conjugation and adiabatic mode conversion in a driven optical parametric oscillator with orbital angular momentum

被引：13
|
作者：
dos Santos, B. Coutinho [1 ]
Souza, C. E. R. [1 ]
Dechoum, K. [1 ]
Khoury, A. Z. [1 ]
机构：
[1] Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ, Brazil
来源：
PHYSICAL REVIEW A | 2007年 / 76卷 / 05期
关键词：
D O I：
10.1103/PhysRevA.76.053821
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We developed a theoretical model for the spatial mode dynamics of an optical parametric oscillator under injection of orbital angular momentum. This process is interpreted in terms of a Poincare representation of first order spatial modes. The spatial properties of the down-converted fields can be easily understood from their symmetries in this geometric representation. By considering an adiabatic mode conversion of the injected signal, we calculate the evolution of the down-converted beams. A phase conjugation effect is predicted which is a consequence of the symmetry in the Poincare sphere. We also propose an experiment to measure this effect.
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页数：10
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