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An experimental study of parametric amplification of light beams with screw dislocations is presented. It is shown that a vortex can be parametrically amplified preserving its topological charge. The reversal of the vortex in an optical parametric amplifier is demonstrated experimentally. It is shown also that OPA can be used for the vortex reversal and its frequency conversion. Experimental result are in agreement with theoretical predictions.
Audrius Berzanskis,A. Matijosius,Algis S. Piskarskas,Valerijus Smilgevicius, andAlgis Stabinis
"Parametric amplification of an optical vortex", Proc. SPIE 3176, Tunable Solid State Lasers, (1 November 1997); https://doi.org/10.1117/12.293468
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Audrius Berzanskis, A. Matijosius, Algis S. Piskarskas, Valerijus Smilgevicius, Algis Stabinis, "Parametric amplification of an optical vortex," Proc. SPIE 3176, Tunable Solid State Lasers, (1 November 1997); https://doi.org/10.1117/12.293468