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20 August 2020 Generating variable Bessel beam profiles with a transmission grating
Adrian Matthew U. De Ubago, Raphael A. Guerrero
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Proceedings Volume 11486, Laser Beam Shaping XX; 1148604 (2020) https://doi.org/10.1117/12.2568552
Event: SPIE Optical Engineering + Applications, 2020, Online Only
Abstract
We present a simple mechanism for varying the core diameter of zero-order Bessel beams (BBs) through the use of a commercially available diffraction grating. A standard set-up to generate BBs is employed, based on an annular slit and a lens. Output BBs are made to pass through transmission gratings with different groove densities. Core diameters and propagation behavior are modified for BBs diffracted by gratings at diffraction orders m = 0 and m = 1.
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Adrian Matthew U. De Ubago and Raphael A. Guerrero "Generating variable Bessel beam profiles with a transmission grating", Proc. SPIE 11486, Laser Beam Shaping XX, 1148604 (20 August 2020); https://doi.org/10.1117/12.2568552
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KEYWORDS
Bessel beams
Diffraction gratings
Beam propagation method
Diffraction
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