Measuring the orbital angular momentum spectrum of vortex beam disturbed by turbulence

Chao Huang; Lu Bai; Yankun Wang; Jingyu Bai

doi:10.1117/12.2684962

31 May 2023 Measuring the orbital angular momentum spectrum of vortex beam disturbed by turbulence

Chao Huang, Lu Bai, Yankun Wang, Jingyu Bai

Proceedings Volume 12711, Third Optics Frontier Conference (OFS 2023); 127110V (2023) https://doi.org/10.1117/12.2684962
Event: Third Optics Frontier Conference (OFS 2023), 2023, Fuyang, China

Abstract

An experimental scheme based on interferometry is designed to measure the orbital angular momentum spectrum of vortex beam perturbed by turbulence. The orbital angular momentum spectrum of vortex beam can be calculated by using four light intensity images. The laser beam is modulated by a spatial light modulator to obtain a vortex beam, and then passes through another spatial light modulator loaded with a turbulent phase perturbation hologram to interfere with the reference beam. The orbital angular momentum spectrum of the vortex beam can be obtained by making use of two interference patterns and the intensity patterns of the vortex beam and the reference beam. The results show that the experimental scheme can measure the orbital angular momentum spectrum of the vortex beam affected by turbulence.

Citation Download Citation

Chao Huang, Lu Bai, Yankun Wang, and Jingyu Bai "Measuring the orbital angular momentum spectrum of vortex beam disturbed by turbulence", Proc. SPIE 12711, Third Optics Frontier Conference (OFS 2023), 127110V (31 May 2023); https://doi.org/10.1117/12.2684962

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KEYWORDS

Angular momentum

Turbulence

Modulation

Wave propagation

Beam splitters

CCD cameras

Wave plates

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