Nd:YAG is the earliest and most famous laser crystal. Due to many of its superior basic properties, Nd:YAG is still often used in near and far infrared solid-state lasers and their frequency doubling and frequency tripling applications.
Advantages of Nd:YAG
Basic properties:
High gain
Low laser threshold
High power
1064nm light wave has less absorption
Good thermal conductivity and thermal shock characteristics
Good optical properties
Suitable for multiple working modes (continuous, pulse, Q-switch, mode-locked)
Specification:
Chemical Formula | Y3Al5O12 |
Crystal Structure | Cubic |
Lattice Parameters | 12.01Å |
Melting Point | 1970°C |
Density | 4.5g/cm3 |
Reflectivity | 1.82 |
Thermal Expansion Coefficient | 7.8x10-6 /K <111>,0 - 250 oC |
Thermal Conductivity | 14W/m/K, 20°C |
Moh'S Hardness | 8.5 |
Stimulated Emission Cross Section | 2.8x10-19 cm-2 |
Loss Coefficient | 0.003cm-1 @1064nm |
Line Width | 0.6 nm |
Radiation Lifetime | 550ms |