Fast switchable electro-optic radial polarization retarder
B. C. Lim, P. B. Phua, W. J. Lai, M. H. Hong
TL;DR
This paper introduces a fast, switchable electro-optic radial polarization retarder made from PMN-PT ceramic, enabling rapid generation of high-purity cylindrical vector beams across a broad spectral range.
Contribution
It presents a novel EO-RPR device with high-speed switching, low voltage, and broad spectral transparency for generating cylindrical vector beams.
Findings
Achieved >95% purity in radially and azimuthally polarized beams.
Demonstrated fast response times suitable for dynamic applications.
Operates effectively across 500-7000 nm spectral range.
Abstract
A fast, switchable electro-optic radial polarization retarder (EO-RPR) fabricated using the electro-optic ceramic PMN-PT is presented. This EO-RPR is useful for fast, switchable generation of pure cylindrical vector beam. When used together with a pair of half-wave plates, the EO-RPR can change circularly polarized light into any cylindrical vector beam of interest such as radially or azimuthally polarized light. Radially and azimuthally polarized light with purities greater than 95% are generated experimentally. The advantages of using EO-RPR include fast response times, low driving voltage and transparency in a wide spectral range (500 -7000 nm).
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