Table 1 Parameters of NaYF4/NaLuF4: 20% Yb3+, 2% Er3+ NPs-PMMA covalent-linking nanocomposite waveguide amplifier.
Total Er3+ concentration | NEr = 2.8 × 1026 m−3 |
Total Yb3+ concentration | NYb = 10 NEr |
Er3+ absorption cross-section | σ12 = 9.5 × 10−24 m2 |
Er3+ emission cross-section | σ21 = 2.7 × 10−24 m2 |
Er3+ absorption cross-section | σ13 = 2.36 × 10−25 m2 |
Yb3+ absorption cross-section | σYb56 = 1.0 × 10−23 m2 |
Yb3+ emission cross-section | σYb65 = 1.0 × 10−23 m2 |
Er3+ emission lifetime on level 4I13/2 | τ21 = 12 ms |
Er3+ non-radiation lifetime on level 4I11/2 | τ32 = 0.38 ms |
Yb3+ emission lifetime on level 2F5/2 | τYb65 = 1.86 ms |
Er3+ upconversion coefficient | Cup = 4.1 × 10−23 m3s−1 |
Er3+ cross-relaxation coefficient | CCr = 3.4 × 10−22 m3s−1 |
Overlapping factor of the signal | Γs = 0.848 |
Overlapping factor of the pump | Γp = 0.87 |
Signal power | Ps = 0.1 mW |
Pump power | Pp = 400 mW |
Waveguide length | L = 1.3 cm |
