Strong penetrability, narrow band-width and high color-purity up-conversion emission
摘要
Under 975 nm excitation, Tm3+/Yb3+ co-doped phosphate glass can emit strong ~800 nm up-conversion emission, which displays better optical characteristics. Especially, the narrow band-width (~29.08 nm) and high color-purity (~0.996) are observed at lower power(65 mW). This research will be helpful for biological tissue imaging.