Seamless multiband near-infrared emission covering 1200–2100 nm with double wavelength excitations

Wang, Weirong; Yu, Guanliang; Hou, Guangning; Zhang, Chaomin; Jiang, Chun

doi:10.1364/osac.2.002623

Cited by 1 publication

(1 citation statement)

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“…Lanthanide triply doped inorganic glass is an excellent candidate for ultra-wide near-infrared (NIR) luminescence covering the 1200–2100 nm spectral range [ 1 ]. Systematic studies demonstrate that bands of selected lanthanide ions located in the NIR region are quite well overlapped, making an important contribution to broadband luminescence.…”

Section: Introductionmentioning

confidence: 99%

Broadband Near-Infrared Luminescence in Lead Germanate Glass Triply Doped with Yb3+/Er3+/Tm3+

et al. 2021

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This paper deals with broadband near-infrared luminescence properties of lead germanate glass triply doped with Yb3+/Er3+/Tm3+. Samples were excited at 800 nm and 975 nm. Their emission intensities and lifetimes depend significantly on Er3+ and Tm3+ concentrations. For samples excited at 800 nm, broadband emissions corresponding to the overlapped 3H4 → 3F4 (Tm3+) and 4I13/2 → 4I15/2 (Er3+) transitions centered at 1.45 µm and 1.5 µm was identified. Measurements of decay curves confirm reduction of 3H4 (Tm3+), 2F5/2 (Yb3+) and 4I13/2 (Er3+) luminescence lifetimes and the presence of energy-transfer processes. The maximal spectral bandwidth equal to 269 nm for the 3F4 → 3H6 transition of Tm3+ suggests that our glass co-doped with Yb3+/Er3+/Tm3+ is a good candidate for broadband near-infrared emission. The energy transfer from 4I13/2 (Er3+) to 3F4 (Tm3+) and cross-relaxation processes are responsible for the enhancement of broadband luminescence near 1.8 µm attributed to the 3F4 → 3H6 transition of thulium ions in lead germanate glass under excitation of Yb3+ ions at 975 nm.

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Section: Introductionmentioning

confidence: 99%