Detection of the power-exponent-phase vortex beams by interference

Ziwei Ye; Yihua Bai; Yuanjie Yang

doi:10.1117/12.2599756

18 June 2021 Detection of the power-exponent-phase vortex beams by interference

Ziwei Ye, Yihua Bai, Yuanjie Yang

Proceedings Volume 11850, First Optics Frontier Conference; 118501B (2021) https://doi.org/10.1117/12.2599756
Event: First Optics Frontier Conference, 2021, Hangzhou, China

Abstract

We introduce a method for detecting the topological charge of power-exponential-phase vortex beam(PEPVB) and its power-exponent parameter by using a Laguerre-Gaussian beam that interferes with a PEPVB. The intensity shows a unique flower pattern after interference. According to the number of petals l-l₀ and the topological charge of LG light l₀ , we can obtain the topological charge of the PEPVB 𝑙. One of the most significant characteristics of PEPVB is the petals in the interference pattern become narrower clockwise. Moreover, the angle of the largest petal Δφ gradually decreases with an increasing power-exponent parameter. By measuring the angle φ₁, φ₂, the value of the power-exponent parameter 𝑛 can be calculated.

Citation Download Citation

Ziwei Ye, Yihua Bai, and Yuanjie Yang "Detection of the power-exponent-phase vortex beams by interference", Proc. SPIE 11850, First Optics Frontier Conference, 118501B (18 June 2021); https://doi.org/10.1117/12.2599756

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