Diffracting and Non-diffracting random fields

Autor:	Vanitha, Patnala, M, Bhargavi, Annapureddy, Venkateswarlu, Reddy, Salla Gangi, Miyamoto, Yoko, Singh, R. P.
Rok vydání:	2021
Předmět:	Physics - Optics
Druh dokumentu:	Working Paper
Popis:	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, that is after taking the Fourier transform of near-field speckles using a simple convex lens. The exact analytical expressions have been provided for the size of both diffracting as well as non-diffracting speckles and compared with our experimental results. 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. Comment: 5 pages and 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2111.12388 Zobrazit plný text záznamu View this record from Arxiv