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].
Titolo: | A new type of shape-invariant beams with structured coherence: laguerre-christoffel-darboux beams | |
Autori: | ||
Data di pubblicazione: | 2021 | |
Rivista: | ||
Citazione: | 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]. | |
Handle: | http://hdl.handle.net/11590/400770 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |