Jabir, M. V.M. V.JabirApurv Chaitanya, N.N.Apurv ChaitanyaAadhi, A.A.AadhiSamanta, G. K.G. K.Samanta2025-08-312025-08-312016-01-01[9781943580194]10.1364/FIO.2016.JW4A.82-s2.0-85165788059https://d8.irins.org/handle/IITG2025/27180We report a novel scheme to generate variable sized "perfect" vortices, having radius and order as mutually independent parameters, and prove that angular-spectrum of downconverted photons does not depend on orbital-angular-momentum of pump vortices.falseConference Paper2162270120160cpConference Proceeding0