Coherent and Partially Coherent Twisting Beams

Franco GORI; Vittorio BAGINI; Massimo SANTARSIERO; Fabrizio FREZZA; Giuseppe SCHETTINI; Giuseppe Schirripa SPAGNOLO

doi:10.1007/BF03254845

Franco GORI, Vittorio BAGINI, Massimo SANTARSIERO, Fabrizio FREZZA, Giuseppe SCHETTINI, Giuseppe Schirripa SPAGNOLO

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Keywords: laser modes, propagation, interference, coherence, invariance

JOURNAL FREE ACCESS

1994 Volume 1 Issue 2 Pages 143-145

DOI https://doi.org/10.1007/BF03254845

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Abstract

We present coherent and partially coherent beams that exhibit transverse pattern expansion and rotation upon free propagation. Coherent twisting beams may be generated by a suitable superposition of Laguerre-Gauss modes, while a model for partially coherent twisting beams is given by a continuous incoherent superposition of lowest order modes.

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