We show that twisted Gaussian Schell-model (TGSM) beams can be represented through an incoherent superposition of partially coherent beams carrying optical vortices and whose cross-spectral densities are expressed in terms of modified Bessel functions. Moreover, starting from this result, we show that the modal expansion of the crossspectral density of a TGSM source can be directly obtained through simple mathematics.
Gori, F., Santarsiero, M. (2015). Twisted Gaussian Schell-model beams as series of partially coherent modified Bessel-Gauss beams. OPTICS LETTERS, 40(7), 1587-1590 [10.1364/OL.40.001587].
Twisted Gaussian Schell-model beams as series of partially coherent modified Bessel-Gauss beams
GORI, Franco;SANTARSIERO, Massimo
2015-01-01
Abstract
We show that twisted Gaussian Schell-model (TGSM) beams can be represented through an incoherent superposition of partially coherent beams carrying optical vortices and whose cross-spectral densities are expressed in terms of modified Bessel functions. Moreover, starting from this result, we show that the modal expansion of the crossspectral density of a TGSM source can be directly obtained through simple mathematics.File in questo prodotto:
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