Yb YAG Ytterbium (Yb) doped Yttrium Aluminium Garnet Laser Crystal

Ytterbium Yb:YAG is a very promising laser crystal and is more suitable for diode-pumping than the commonly used Nd-doped YAG crystals. Compared with the traditional Nd:YAG crystal, Yb:YAG crystal has a much wider absorption bandwidth to reduce thermal management of diode lasers. Yb:YAG emits typically at either 1030 nm (strongest line) or 1050 nm (ytterbium-doped gain media). It is often used in powerful and efficient thin-disk lasers. Yb:YAG yttrium aluminium garnet crystal is expected to replace Nd:YAG crystal for high power diode-pumped lasers and other potential applications.

Available Yb concentrations are 1.0, 2.0, 3.0, 5.0, 10.0, and 15.0 (atm%)

Specifications:

• Crystal structure: Cubic
• Lattice parameters: 12.01 
• Melt point: 1970 øC
• Hardness (mohs): 8.5
• Density: 4.56 ñ 0.04 g/cm³
• Specific heat: 0.59 J/g.cm³
• Young modulus: 3.17x10⁴ Kg/mm²
• Tensile strength: 0.13~0.26 GPa

Thermal expansion

• <100> Direction: 8.2x10^-6 / øC (0~250 øC )
• <110> Direction: 7.7x10^-6 / øC (0~250 øC )
• <111> Direction: 7.8x10^-6 / øC (0~250 øC )
• 10.5 W/m/K (@100 øC)

Thermo-optical coefficient: 7.3x10^-6 / øC

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