Contributo in atti di convegno, 2021, ENG, 10.1051/epjconf/202125505001

Enhanced photorefractivity and rare-earth photoluminescence in SnO2 nanocrystals-based photonic glass-ceramics

Thi Ngoc Lam Tran, Anna Szczurek, Stefano Varas, Cristina Armellini, Alessandro Carpentiero, Andrea Chiappini, Erica Iacob, Gloria Ischia, Simone Berneschi, Gualtiero Nunzi Conti, Monica Bollani, Francesco Scotognella, Giancarlo C. Righini, Pawe? G?uchowski, Alessandro Chiasera, Anna Lukowiak, Maurizio Ferrari

IFN-CNR CSMFO Lab. and FBK Photonics Unit, Via alla Cascata 56/C, 38123 Povo, Italy; Department of Physics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; 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; 4Fondazione Bruno Kessler, Sensors and Devices, Micro Nano Facility, Via Sommarive 18, Povo, Trento, 38123, Italy; 5Department of Industrial Engineering, University of Trento, Via Sommarive 9, Povo, Trento, 38123, Italy; MiPLab, IFAC-CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy; CNR-IFN, P.zza Leonardo da Vinci 32, Milano, 20133 Italy; Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia (IIT), Via Giovanni Pascoli, 70/3, 20133, Milan, Italy; Institute of Low Temperature and Structure Research, PAS, ul. Okólna 2, 50422 Wroclaw, Poland;

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.

EOS Annual Meeting (EOSAM 2021), Rome, 13/09/2021-17/09/2021

Keywords

rare earth photoluminescence, host sensitizer, SnO2-SiO2 glass ceramics, photorefractivity

CNR authors

Armellini Cristina, Righini Giancarlo, Lukowiak Anna Luiza, Scotognella Francesco, Tran Lam Thi Ngoc, Szczurek Anna, Ferrari Maurizio, Nunzi Conti Gualtiero, Chiasera Alessandro, Chiappini Andrea, Berneschi Simone, Varas Stefano, Carpentiero Alessandro, Bollani Monica

CNR institutes

IFAC – Istituto di fisica applicata "Nello Carrara", IFN – Istituto di fotonica e nanotecnologie