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14 September 2018 Engineering the intensity trajectory and phase gradient of light beams
Alejandra Serrano-Trujillo, Víctor Ruiz Cortés
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Proceedings Volume 10744, Laser Beam Shaping XVIII; 1074404 (2018) https://doi.org/10.1117/12.2321985
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States
Abstract
In this work, we present the implementation of an experimental setup for controlling the phase gradient of arbitrary light beams, using a spatial light modulator. Simple arbitrary shapes are initially proposed based on their parametric equations, and the desired beam shape, as well as its phase behavior are interpreted through an algorithm. The analysis of the electric field distribution and its manipulation through the topological charge and the normal direction respect every position of an arbitrary shape, allow to encode in a Spatial Light Modulator the behavior of the phase of a light beam. The far field intensity profiles are captured, studied and compared to those designed. The phase of a set of generated beams is tested using a linear polarizer as an analyzer and by an optical trapping setup.
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Alejandra Serrano-Trujillo and Víctor Ruiz Cortés "Engineering the intensity trajectory and phase gradient of light beams", Proc. SPIE 10744, Laser Beam Shaping XVIII, 1074404 (14 September 2018); https://doi.org/10.1117/12.2321985
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KEYWORDS
Beam shaping
Spatial light modulators
Optical tweezers
Computer programming
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