Table 1 Main parameters of Nd3+-doped quasi-three-level lasers.
From: Reabsorption cross section of Nd3+-doped quasi-three-level lasers
Parameter | Nd:GdVO4 | Nd:YVO4 | Nd:YAG |
|---|---|---|---|
f1 Fraction of the population density in the lowest laser level | 0.5050 | 0.5055 | 0.51 |
f2 Fraction of the population density in the upper laser level | 0.0534 | 0.049 | 0.04 |
n Refractive index | 1.973 | 1.973 | 1.816 |
Ï„ Lifetime of the upper laser level | 90 | 100 | 230 |
α Absorption coefficient | 1.53 | 1.53 | 2.95 |
σ Stimulated-emission cross section | 6.6 × 10−20 | 4.8 × 10−20 | 3.7 × 10−20 |
ωp Waist radius of the pump beam | 200 | 200 | 200 |
ωl Waist radius of the laser beam | 200 | 200 | 200 |
