Influence of Yb2+ ions on the optical properties of Yb3+/Ho3+ co-doped silica glass synthesized by non-chemical vapor deposition method

Abstract Yb 3 + /Ho 3 + co-doped silica glasses are synthesized by the non-chemical vapor deposition method. The influence of Yb 2 + ions on the optical properties of Yb 3 + /Ho 3 + co-doped silica glass is investigated for the first time. The experimental results show that the formation of Yb 2 + ions can improve the intensity of UV and visible light. However, Yb 2 + ions have a determined effect on the energy transfer from Yb 3 + ions to Ho 3 + ions. To our knowledge, this is the first demonstrated on the influence of Yb 2 + ions on the emission properties around 2 μm of Ho 3 + through Yb 3 + sensitization in Yb 3 + /Ho 3 + co-doped silica glass when it is excited at 980 nm.