20 February 2017 Quantum dot based 3D photonic devices
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In this work, we present our most recent results on the fabrication of 3D high-resolution woodpile photonic crystals containing an organic-inorganic silicon-zirconium (Si-Zr) composite and cadmium sulfide (CdS) quantum dots (QDs). The structures are fabricated by combining 3D Direct Laser Writing by two-photon absorption and in-situ synthesis of CdS nanoparticles inside the 3D photonic matrix. The CdS-Zr-Si composite material exhibits a high nonlinear refractive index value measured by means of Z-scan method. 3D woodpile photonic structures with varying inlayer periodicity from 600nm to 500nm show clear photonic stop bands in the wavelength region between 1000nm to 450nm.
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Ioanna Sakellari, Ioanna Sakellari, Elmina Kabouraki, Elmina Kabouraki, David Gray, David Gray, Maria Vamvakaki, Maria Vamvakaki, Maria Farsari, Maria Farsari, } "Quantum dot based 3D photonic devices", Proc. SPIE 10115, Advanced Fabrication Technologies for Micro/Nano Optics and Photonics X, 101151A (20 February 2017); doi: 10.1117/12.2254835; https://doi.org/10.1117/12.2254835


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