Gerchberg-Saxton algorithm: experimental realisation and modification for the problem of formation of multimode laser beams

Journal Article · Tue Jun 30 04:00:00 EDT 2009 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2009V039N06ABEH013642· OSTI ID:21467117

Il'ina, I V; Cherezova, T Yu ^[1]; Kudryashov, A V ^[2]

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1. M. V. Lomonosov Moscow State University, Faculty of Physics, Moscow (Russian Federation)
2. Shatura branch of the Moscow State Open University, Moscow (Russian Federation)

An original method is proposed to calculate the formation of specified far-field intensity distributions by a bimorph mirror in the case of initial transverse-multimode beams. The method is based on the Gerchberg-Saxton algorithm with replacement of the phase function in the plane of the control element by a function that takes into account both the intensity and phase distributions of each mode. The numerical results on the formation of a beam with the third-order super-Gaussian intensity distribution from beams composed of two or four lowest transverse modes are discussed. The experimental results on using the conventional Gerchberg-Saxton algorithm to form a desired intensity distribution from single-mode laser beams using a liquid-crystal modulator are presented. (control of laser radiation parameters)

• OSTI ID: 21467117
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 6 Vol. 39; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
BEAMS
CONTROL
CRYSTALS
DISTRIBUTION
ELECTROMAGNETIC RADIATION
FLUIDS
LASER RADIATION
LIQUID CRYSTALS
LIQUIDS
MATHEMATICAL LOGIC
MIRRORS
MODE CONTROL
MODIFICATIONS
PHOTON BEAMS
RADIATIONS