Description

Key Advantages
High Gain Coefficient
Enables efficient amplification of laser signals, supporting high-output-power systems with minimal energy input. This makes YAG ideal for lasers requiring strong, focused beams??such as medical cutting tools (e.g., Nd:YAG lasers for ophthalmic surgery) or military rangefinders.
Low Optical Loss
Exhibits minimal absorption and scattering of light, ensuring high transmission of the laser beam through the crystal. Low loss enhances beam quality (e.g., TEM?? mode) and reduces heat generation, critical for maintaining stability in continuous-wave (CW) or high-repetition-rate pulsed lasers.
Exceptional Damage Threshold
Withstands intense laser radiation without degradation, even under high-power operation. This durability prevents optical damage in high-energy systems, extending the crystal??s lifespan and reducing maintenance costs.
Long Operational Lifespan
Resistant to thermal and mechanical fatigue, maintaining performance over thousands of hours of operation. This longevity is vital for mission-critical applications like aerospace laser altimeters or military communication systems.
Versatile Doping Compatibility
Easily doped with rare-earth ions to tune laser wavelengths:
Nd:YAG (1064 nm): Most common, used in medical, industrial, and military lasers.
Yb:YAG (1030 nm): Efficient for high-power, ultrafast systems.
Er:YAG (1645 nm): Suitable for medical lasers (e.g., skin resurfacing) due to water absorption.
Technical Specifications
Parameter Value Unit
This material has a density of 4.5 g/cm3, a melting point of 1970 K, and a hardness of 8.5 on the Mohs scale. Its lattice constant is 12.01 ?, with a refractive index of 1.82. The thermal expansion coefficient in the <111> direction is 7.8??10?? /K. For time-related properties, the relaxation time of the terminal laser levels is 30 ns, the radiative lifetime is 550 ??s, the spontaneous fluorescence lifetime is 230 ??s, and the linewidth is 0.6 cm?1.