Sarkar Tushar, Parvin Reajmina, Brundavanam Maruthi M, Singh Rakesh Kumar
Opt Lett. 2021 Nov 15;46(22):5546-5549. doi: 10.1364/OL.440160.
In this Letter, we propose and experimentally demonstrate a new, to the best of our knowledge, non-interferometric and highly stable technique to unscramble the incident orbital angular momentum (OAM) state and quantitatively measure the phase structure from the non-imaged random light. A new theoretical basis is developed and also verified by numerical simulation and experimental demonstration. We also quantitatively investigate the OAM modes of the incident light using orthogonal projection.
