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.

Martinez-Herrero, R., Santarsiero, M., Piquero, G., Gonzalez de Sande, J.C. (2021). A new type of shape-invariant beams with structured coherence: laguerre-christoffel-darboux beams. PHOTONICS, 8(4), 134 [10.3390/photonics8040134].

A new type of shape-invariant beams with structured coherence: laguerre-christoffel-darboux beams

Santarsiero M.
;
2021-01-01

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.
Martinez-Herrero, R., Santarsiero, M., Piquero, G., Gonzalez de Sande, J.C. (2021). A new type of shape-invariant beams with structured coherence: laguerre-christoffel-darboux beams. PHOTONICS, 8(4), 134 [10.3390/photonics8040134].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/400770
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