Generation of diffracting and non-diffracting speckles

Patnala Vanitha; Salla Gangi Reddy; R. P. Singh; Yoko Miyamoto

doi:10.1117/12.2659049

8 December 2022 Generation of diffracting and non-diffracting speckles

Patnala Vanitha, Salla Gangi Reddy, R. P. Singh, Yoko Miyamoto

Proceedings Volume 12479, Optical Manipulation and Structured Materials Conference (OMC 2022); 124790R (2022) https://doi.org/10.1117/12.2659049
Event: Optics and Photonics International Congress, 2022, Yokohama, Japan

Abstract

We have generated and propagated both diffracting and non-diffracting speckles using the scattering of perfect optical vortices. The diffracting speckles have been realized in the near field and non-diffracting speckles have been realized in the far field, i.e. after taking the Fourier transform of near-field speckles using a simple convex lens. We found that the experimental results are in good agreement with the theoretical results. These results may find applications in classical cryptography and communication as we have both varying and non-varying random field patterns with propagation distance.

Citation Download Citation

Patnala Vanitha, Salla Gangi Reddy, R. P. Singh, and Yoko Miyamoto "Generation of diffracting and non-diffracting speckles", Proc. SPIE 12479, Optical Manipulation and Structured Materials Conference (OMC 2022), 124790R (8 December 2022); https://doi.org/10.1117/12.2659049

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