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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:56 |
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Conference: Bucharest University Faculty of Physics 2023 Meeting
Section: Polymer Physics
Title:
Optically Tunable Photonic BandGap Soft Matter Systems
Authors:
Valentin BARNA(1), Lucian Dragos FILIP(2) and Catalin BERLIC(1)
Affiliation:
1) University of Bucharest, Faculty of Physics, PO Box MG 11, Magurele-Bucharest, Romania.
2) National Institute of Materials Physics, Bucharest-Magurele, 077125, Romania.
E-mail
valentin.barna@g.unibuc.ro
Keywords:
Polymers, Liquid Crystals, Photonic BandGaps, Refraction Index, Periodic Nanometric Soft Matter Systems
Abstract:
Herein we present some computational simulations, new design and fabrication methods for special Photonic BandGap (PBGs) systems built from various soft materials (polymers, liquid crystals) to be employed as tunable compact light amplification systems in the visible and NIR optical range. Potential periodic structures with micrometric size, fabricated from materials with refraction indices in the interval 1 – 1.7 are discussed. The selection of suitable arrangements, geometries and material mixtures can lead to obtaining tunable high quality optical amplifiers and even lasing devices for certain designated wavelengths, as well as personalized pass band optical filters. By employing birefringent liquid materials (i.e. liquid crystals) in the configuration we can achieve real time spectral tuning for these types of devices, an important feature that allows for a broad application range and higher versatility in the field of optics, photonics and nanotechnologies.
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