https://doi.org/10.1051/epjconf/202125505001
Enhanced photorefractivity and rare-earth photoluminescence in SnO2 nanocrystals-based photonic glass-ceramics
1 IFN-CNR CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, 38123, Povo, Italy
2 Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milano, Italy
3 Department of Materials Technology, Faculty of Applied Science, Ho Chi Minh City University of Technology and Education, Vo Van Ngan Street 1, Thu Duc District, 720214, Ho Chi Minh City, Vietnam
4 Fondazione Bruno Kessler, Sensors and Devices, Micro Nano Facility, Via Sommarive 18, Povo, Trento, 38123, Italy
5 Department of Industrial Engineering, University of Trento, Via Sommarive 9, Povo, Trento, 38123, Italy
6 MiPLab, IFAC-CNR, Via Madonna del Piano 10, 50019, Sesto Fiorentino, Italy
7 CNR-IFN, P.zza Leonardo da Vinci 32, Milano,, 20133 Italy
8 Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia (IIT), Via Giovanni Pascoli, 70/3, 20133, Milan, Italy
9 Institute of Low Temperature and Structure Research, PAS, ul. Okólna 2, 50422, Wroclaw, Poland
* Corresponding author: lam.tran@ifn.cnr.it
Published online: 18 November 2021
This work presents state of the art rare-earth activated SnO2 nanocrystals - based transparent glass-ceramics. With combined enhancements in both photorefractivity and rare-earth photoluminescence, the glass-ceramic has unique benefits as a lasing material. It exhibits high photorefractivity with UV induced refractive index modifications in the order of 10-3. Exploiting its high photorefractivity, optical gratings are fabricated on the glass-ceramic under an energy-efficient direct UV writing process. Furthermore, SnO2 semiconductor nanocrystals are also employed as efficient rare-earth sensitizers enhancing drastically the rare-earth photoluminescence.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
