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Generation of perfect cylindrical vector beams with complete control over the ring width and ring diameter


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Pradhan, Prabin et Sharma, Manish et Ung, Bora. 2018. « Generation of perfect cylindrical vector beams with complete control over the ring width and ring diameter ». IEEE Photonics Journal, vol. 10, nº 1.

Ung B 2018 16158 Generation of perfect cylindrical vector.pdf - Version publiée
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Impact Statement: So far, efforts in generating so-called perfect cylindrical vector beams (PCVB) have yielded PCVBs with tunable ring diameter only, and were of limited purity. We here demonstrate a method for producing high-purity PCVBs whose transverse intensity profile (ring width & ring diameter) can be fully and easily controlled via a digital SLM and iris. The scheme is highly adaptable as it can generate any type of PCVB as well as any topological orders of perfect vortex beams, within the same setup. Abstract: We propose the generation of high-purity perfect cylindrical vector beams (PCVB) using the Fourier transformation of Bessel–Gauss vector beams. The demonstration of PCVBs is implemented via an interferometric method employing a spatial light modulator that allows a fully independent control of the ring diameter ( RD) and ring width ( RW) of the PCVB. The proposed scheme enables to generate different types of cylindrical vector beams with precise user-defined transverse dimensions. The dynamic control of the ring width, ring diameter, and the specific type of PCVBs desired is theoretically as well as experimentally demonstrated. The proposed experimental setup can not only be employed in the generation of arbitrary PCVB, but also in perfect vortex beams. The ability to generate fully tailorable cylindrical vector beams and vortex beams has implications for the efficient launch of exotic optical modes in specialty fibers, in the field of optical tweezers as well as for superresolution microscopy.

Type de document: Article publié dans une revue, révisé par les pairs
Mots-clés libres: Fonds d'auteur ÉTS, FAETS
Ung, Bora
Affiliation: Génie électrique
Date de dépôt: 19 janv. 2018 14:07
Dernière modification: 31 janv. 2018 20:20
URI: http://espace2.etsmtl.ca/id/eprint/16158

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