Optical vortex generation by volume holographic elements with embedded phase singularity: Effects of misalignments

被引：4

作者：

Bekshaev, A. ^{[1
]}

Sviridova, S. ^{[2
]}

Popov, A. ^{[1
]}

Rimashevsky, A. ^{[1
]}

Tyurin, A. ^{[1
]}

机构：

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

[2] Odessa Natl Polytech Univ, Inst Comp Syst, UA-65044 Odessa, Ukraine

来源：

UKRAINIAN JOURNAL OF PHYSICAL OPTICS | 2013年 / 14卷 / 04期

关键词：

optical vortex; volume hologram; misalignment; transformation; spatial structure; beam propagation; ORBITAL ANGULAR-MOMENTUM; LIGHT-BEAMS; LASER-BEAMS; DIFFRACTION; TRANSFORMATION; DISLOCATIONS; VORTICES; SPIN;

D O I：

10.3116/16091833/14/4/171/2013

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Based on the linear theory for optical vortex (OV) formation in volume holographic elements (HE) with embedded phase singularity (A. Bekshaev et al., Opt. Commun. 285 (2012) 4005), we analyze theoretically the OV-beams obtained when the incident Gaussian beam axis deviates from the optical axis of the HE. For different displacements of the incident beam with respect to the HE centre, the spatial characteristics of the diffracted beams and their evolution during the post-HE propagation are investigated numerically with allowance for the radiation extinction in the HE depth. A special attention is paid to behaviour of the beam centroid (centre of gravity) trajectory. The sensitivity of the generated OV-beam profile to the incident beam misalignments can be used for the output beam shaping and control, in particular, for compensation of the OV-beam distortions associated with the light extinction.

引用

页码：171 / 186

页数：16

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