The study of the structural stability of  the spiral laser beams propagation through inhomogeneous phase medium

Alexander A. Zinchik; Yana B Muzychenko

doi:10.1117/12.2184847

21 June 2015 The study of the structural stability of the spiral laser beams propagation through inhomogeneous phase medium

Alexander A. Zinchik, Yana B Muzychenko

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Proceedings Volume 9526, Modeling Aspects in Optical Metrology V; 95261M (2015) https://doi.org/10.1117/12.2184847
Event: SPIE Optical Metrology, 2015, Munich, Germany

Abstract

This paper discusses theoretical and experimental results of the investigation of light beams that retain their intensity structure during propagation and focusing. Spiral laser beams are a family of laser beams that preserve the structural stability up to scale and rotation with the propagation. Properties of spiral beams are of practical interest for laser technology, medicine and biotechnology. Researchers use a spiral beams for movement and manipulation of microparticles. Functionality laser manipulators can be significantly enhanced by using spiral beams whose intensity remains invariable. It is well known, that these beams has non-zero orbital angular momentum. Spiral beams have a complicated phase distribution in cross section. In this paper we investigate the structural stability of the laser beams having a spiral phase structure by passing them through an inhomogeneous phase medium. Laser beam is passed through a medium is characterized by a random distribution of phase in the range 0..2π. The modeling was performed using VirtualLab 5.0 (manufacturer LightTrans GmbH). Compared the intensity distribution of the spiral and ordinary laser beam after the passage of the inhomogeneous medium. It is shown that the spiral beams exhibit a significantly better structural stability during the passage phase heterogeneous environments than conventional laser beams. The results obtained in the simulation are tested experimentally. Experimental results show good agreement with the theoretical results.

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Alexander A. Zinchik and Yana B Muzychenko "The study of the structural stability of the spiral laser beams propagation through inhomogeneous phase medium", Proc. SPIE 9526, Modeling Aspects in Optical Metrology V, 95261M (21 June 2015); https://doi.org/10.1117/12.2184847

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KEYWORDS

Laser beam propagation

Diffractive optical elements

Distortion

Gaussian beams

Optical simulations

Spatial light modulators

Ions

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