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physics.optics2021
Physical Unclonable Functions using speckle patterns of perfect optical vortices
Patnala Vanitha, Bhargavi Manupati, Inbarasan Muniraj +3
Encryption techniques demonstrate a great deal of security when implemented in an optical system (such as holography) due to the inherent physical properties of light and the preci…
physics.optics2016
Pancharatnam phase in non-separable states of light
Chithrabhanu Perumangatt, Salla Gangi Reddy, Nijil Lal +3
We generate the non-separable state of polarization and orbital angular momentum (OAM) using a laser beam. The generated state undergoes a cyclic polarization evolution which intro…
physics.optics2015
Divergence of optical vortex beams
Salla Gangi Reddy, Chithrabhanu P, Shashi Prabhakar +3
We show, both theoretically and experimentally, that the propagation of optical vortices in free space can be analysed by using the width () of the host Gaussian beam and the…