[8a-PB2-1~11] 4 JSAP-OSA Joint Symposia 2017 (poster)

▲ [8a-PB2-2] Eu-doped on-chip blue-light emitting glass-ceramic waveguides

〇(DC)SUBHABRATA GHOSH¹、B.N. Shivakiran Bhaktha¹ (1.Indian Institute of Technology kharagpur)

キーワード：glass-ceramic, waveguide, rare-earth

We report fabrication and characterization of low-loss (0.5 ± 0.2 dB/cm) Eu-doped 70 SiO₂ - 23 HfO₂ - 7 ZnO ternary glass-ceramic planar waveguides as blue-light emitting sources for integrated optics applications. The reduction of Eu³⁺ → Eu²⁺ in the presence of ZnO nanocrystals leads to enhanced blue-emission in the low-loss waveguides. The room temperature photoluminescence (PL) spectra of 1 mol% Eu-doped 70 SiO₂ - 23 HfO₂ - 7 ZnO ternary film, under the excitation of 325 nm line of Xe lamp, as a function of heat-treatment temperatures have been reported. The detail analysis of structural and waveguide properties for on-chip blue-emission sources will be presented in the conference.