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Yb:YAG Crystal
Advantages of Yb:YAG Crystal Made by WISOPTIC
Simple electronic structure excludes excited-state absorption and also a variety of detrimental quenching processes
Broad absorption band at 940 nm
Long lifetime of the 2F5/2 ytterbium energy level
Low quantum defect
Custom crystals available upon request
Yb:YAG (Ytterbium-doped Yttrium Aluminum Garnet) is one of the most promising laser-active materials with a large absorption bandwidth and typical emission at 1030 nm. Yb:YAG is more suitable for high power diode-pumped lasers than the traditional Nd-doped systems. The broad absorption band enables Yb:YAG to maintain uninterrupted pump efficiency across the typical thermal shift of diode output. High efficiency means a relatively small dimension Yb:YAG laser crystal will produce high power output.
Wisoptic offer excellent quality Yb:YAG crystals with dopant concentrations ranging from 0.2-30% Yb in various dimensions and orientations in both coated and uncoated forms, in both rods and discs shapes, that meet your exact specifications.
Application examples
Material processing, micromachining, welding, cutting
Efficient high power thin-disk lasers
Material and Specifications
Dopant concentration: Yb: 0.5~25 at %
Orientation: [100] or [111] within 5°
Wavefront distortion: ≤ 0.125 l/inch
Extinction ratio: ≥ 28 dB
Rod sizes: diameter: 2~20 mm; length: 5~150 mm (upon request of customer)
Dimensional tolerances diameter: +0.00“/– 0.002“ mm
length: ±0.02"
Barrel finish ground finish: 400# grit
Parallelism: ≤10"
Perpendicularity: ≤ 5'
Flatness: lambda/10
Surface quality: 10 – 5 (MIL-O-13830A)
Chamfer: 0.006" ± 0.002" at 45°± 5°
AR coating reflectivity: ≤ 0.25 % (@1030 nm)
Single pass loss: < 3×103 cm-1
