Exotic galaxy-shaped surface structures of azo-polymers by irradiation of pinning petal beams

Takashige Omatsu

doi:10.1117/12.2677243

5 October 2023 Exotic galaxy-shaped surface structures of azo-polymers by irradiation of pinning petal beams

Takashige Omatsu

Proceedings Volume PC12663, Molecular and Nanophotonic Machines VI; PC126630A (2023) https://doi.org/10.1117/12.2677243
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States

Abstract

Azo-polymers enable the develop rewritable engineered optical materials with exotic physical properties unattainable in natural materials via photo-induced reversible surface reliefs through trans-cis-trans photoisomerization. The coherent superposition of optical vortices with negative and positive topological charges of ±ℓ, referred a petal-beam, exhibits an exotic spatial form with 2|ℓ| petals. In this work, we report on the first demonstration of the surface structures, reflecting full geometric parameters (rotating direction, topological charge, initial and azimuthal phase) of the irradiated petal-beam, of azo-polymers through the irradiation of a temporally spinning petal-beam with circular polarization.

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Citation Download Citation

Takashige Omatsu "Exotic galaxy-shaped surface structures of azo-polymers by irradiation of pinning petal beams", Proc. SPIE PC12663, Molecular and Nanophotonic Machines VI, PC126630A (5 October 2023); https://doi.org/10.1117/12.2677243

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KEYWORDS

Optical engineering

Optical vortices

Angular momentum

Laser irradiation

Optical surfaces

Reflection

Spiral phase plates

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