Tailoring of communication band luminescence for super broadband optical amplifier based on Er3+/Yb3+/P5+ co-doped nanoporous silica glass

We report on a series of Er 3 + / Yb 3 + / P 5 + co-doped silica glass from nanoporous silica glass based on glass phase separation technology. The optical properties of the Er 3 + / Yb 3 + / P 5 + co-doped glasses were investigated. Measurements showed that phosphorus can promote energy transfer from Yb 3 + ions to Er 3 + ions while suppressing the energy transfer from Er 3 + ions to Yb 3 + ions and efficiently suppressing the amplified spontaneous emission (ASE) from Yb 3 + ions at 1030 nm. Additionally, the luminescence of Er 3 + ( I 4 13 / 2 → I 4 15 / 2 ) was greatly extended under 976 nm laser excitation, and the full width at half maximum (FWHM) of Er 3 + ( I 4 13 / 2 → I 4 15 / 2 ) was measured to be up to 72 nm and enables the luminescence peak redshifted. The emission cross section of Er 3 + ( I 4 13 / 2 → I 4 15 / 2 ) was calculated to be 1.6 * 10 − 20 cm 2 , one order higher than that of other silica glasses. It is suggested that the Er 3 + / Yb 3 + / P 5 + co-doped silica glasses based on nanoporous silica glass present great potential for broadband amplification.