Recording of a volume transmitting vortex hologram in a photorefractive crystal of bismuth silicate

  • Xie Zhao Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus
  • Ivan G. Dadenkov Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus
  • Elena A. Melnikova Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus
  • Alexei L. Tolstik Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

Abstract

Recent breakthroughs in vortex beam research, characterised by structured beams bearing orbital angular momentum, have significantlytransformed various applications of beams. These advancements have notably impacted fieldssuch as advanced optical manipulation, high capacity optical communications, and super-resolution imaging. Undoubtedly, the development and refinementof generation and detection techniques for vortex beams play pivotal roles in enabling and enhancing their applications. In this work, pulsed recording of dynamic holograms of singular beams in photorefractive bismuth silicate crystals is realised. The experimental setup presented in this work is based on the recor ding of transmissive volume dynamic holograms, which allows us to use a wide spectral range to reconstruct the holo graphic image. A volumetric static hologram recorded in a photopolymer layer was used as a singular beam source. The restoration of the recorded hologram was realised using a continuous laser with a differentwavelength, which allowed the recording and restoring beams to be spatially separated. An interference method for determining the topological charge of an optical vortex from the transmitted and restored beams was also realised.

Author Biographies

Xie Zhao, Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

master’s degree student at the department of laser physics and spectroscopy, faculty of physics

Ivan G. Dadenkov, Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

junior researcher at the laboratory of nonlinear optics and spectroscopy, faculty of physics

Elena A. Melnikova, Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

PhD (physics and mathematics), docent; associate professor at the department of laser physics and spectroscopy, faculty of physics

Alexei L. Tolstik, Belarusian State University, 4 Niezaliezhnasci Avenue, Minsk 220030, Belarus

doctor of science (physics and mathematics), full professor; head of the department of laser physics and spectroscopy, faculty of physics

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Published
2024-09-18
Keywords: holography, photorefractive crystals, optical vortices, bismuth silicate, interference pattern
Supporting Agencies The work was carried out within the framework of the state research programme «Photonics and electronics for innovation» and with the financial support of the National Study Abroad Fund of China.
How to Cite
Zhao, X., Dadenkov, I. G., Melnikova, E. A., & Tolstik, A. L. (2024). Recording of a volume transmitting vortex hologram in a photorefractive crystal of bismuth silicate. Journal of the Belarusian State University. Physics, 3, 4-9. Retrieved from https://journals.bsu.by/index.php/physics/article/view/6328
Issue
No 3 (2024): Journal of the Belarusian State University. Physics
Section
Optics and Spectroscopy

Copyright (c) 2024 Journal of the Belarusian State University. Physics

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