Effects of misalignments in the optical vortex transformation performed by holograms with embedded phase singularity

被引：37

作者：

Bekshaev, A. Ya ^{[1
]}

Svindova, S. V. ^{[1
]}

机构：

[1] II Mechnikov Natl Univ, UA-65082 Odessa, Ukraine

来源：

OPTICS COMMUNICATIONS | 2010年 / 283卷 / 24期

关键词：

Optical vortex; Computer synthesized hologram; Misalignment; Transformation; Spatial structure; Beam propagation; ORBITAL ANGULAR-MOMENTUM; DIFFRACTION GRATINGS; GAUSSIAN-BEAM; LASER-BEAMS; LIGHT; VORTICES; WAVE; DISLOCATIONS; ENTANGLEMENT; GENERATION;

D O I：

10.1016/j.optcom.2010.07.031

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Spatial characteristics of diffracted beams produced by a fork hologram from an incident circular Laguerre-Gaussian beam whose axis differs from the hologram optical axis are studied theoretically General analytical representations for the complex amplitude distribution of a diffracted beam are derived in terms of superposition of Kummer beams or hypergeometnc-Gaussian beams The diffracted beam structure is determined by combination of the proper" topological charge m of the incident vortex beam and the topological charge I of the singularity "imparted" by the hologram Evolution of the diffracted beam structure is studied in detail for several combinations of m and I and for various incident beam displacements with respect to the optical axis of the hologram Variations of the intensity and phase distribution due to the incident beam misalignment are investigated and possible applications for the purposeful optical vortex beam generation and optical measurements are discussed (C) 2010 Elsevier BV All rights reserved

引用

页码：4866 / 4876

页数：11