A new type of shape-invariant beams with structured coherence: Laguerre-Christoffel-Darboux beams

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Martínez Herrero, Rosario and Santarsiero, Massimo and Piquero Sanz, Gemma María and González de Sande, Juan Carlos (2021) A new type of shape-invariant beams with structured coherence: Laguerre-Christoffel-Darboux beams. Photonics, 8 (4). ISSN 2604-6732

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Official URL: http://dx.doi.org/10.3390/photonics8040134




Abstract

A new class of sources presenting structured coherence properties is introduced and analyzed. They are obtained as the incoherent superposition of coherent Laguerre-Gaussian modes with suitable coefficients. This ensures that the shape of the intensity profile and the spatial coherence features of the propagated beams are invariant during paraxial approximation. A simple analytical expression is obtained for the cross-spectral density of the sources of this class, regardless of the number of superposed modes. Properties of these sources are analyzed and described by several examples.


Item Type:Article
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© 2021 by the authors.
The authors wish to thank F. Gori for his useful suggestions.

Uncontrolled Keywords:Coherence; Structured light; Propagation; Shape-invariant Fields
Subjects:Sciences > Physics > Optics
ID Code:65588
Deposited On:18 May 2021 16:56
Last Modified:21 Jun 2022 17:12

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