Abstract
Abstract Infrared-to-visible frequency upconversion (UC) in Nd3+-doped PbO–GeO2 (PGO) glasses containing silver nanoparticles (NPs) was investigated. The excitation was made at 805 nm, in resonance with the Nd3+ transition 4I9/2 → 4F5/2. Photoluminescence (PL) bands centered at 535 nm, 600 nm and 670 nm were observed corresponding to the electronic transitions 4G7/2 → 4I9/2, [4G7/2 → 4I11/2, 4G5/2 → 4I9/2], and [4G7/2 → 4I13/2, 4G5/2 → 4I11/2], respectively. The quadratic dependence of the UC intensity versus the laser intensity indicates that two laser photons contribute for the emission of each upconverted photon. The results show for the first time that the nucleation of silver NPs in Nd3+-doped PGO glasses contributes to increase the UC efficiency and the PL enhancement reached ≈50% for the samples with the maximum concentration of NPs.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
