Spiral light beams: characteristics and applications

1st International Scientific School on Methods of Digital Image Processing in Optics and Photonics

物理学;计算机科学

Volostnikov, V.^1,2 ; Kotova, S.^1,2 ; Kishkin, S.^1

Samara Branch of the P.N.Lebedev Physical Institute, Russian Academy of Sciences, Novo-Sadovaya Str. 221, Samare

443011, Russia^1

Samara State Aerospace University, Moskovskoye Shosse 34, Samare

443086, Russia^2

关键词: Contour analysis;    Intensity invariant;    Intensity structure;    Laser technologies;    Light beam;    Scale and rotation;    Spiral beams;    Spiral light beams;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/536/1/012001/pdf
DOI  :  10.1088/1742-6596/536/1/012001

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The report contains discussions of theoretical and experimental results of the study on the light beams that retain their intensity structure under propagation and focusing. We describe the behavior of a family of such laser beams called spiral beams, keeping their intensity invariant within scale and rotation, under their propagation. These very features of spiral beams are of a high practical interest for those occupied with the laser technologies and image processing. Some of the applications, in particular their use for the retrieval of the onedimensional signals phase and contour analysis are demonstrated.