Cr,Er:YAG

Cr,Er:YAG
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CRYLINK’s Cr, Er: YAG is a kind of laser crystal product with excellent comprehensive performance. It is widely used in laser medical cosmetology, xenon lamp pumping, and other fields. The product has high single-pulse energy, good optical quality, and low absorption loss. It can be used in mid-infrared lasers, xenon lamp pump lasers, and 2940 nm laser products.

Material Specifications

Orientation[100] or [100] <± 0.5。
Parallelism10〞
Perpendicularity5ˊ
Surface Finish5-Oct
Wavefront Distortion<­λ/8@632 nm
Flatness<λ/10@632.8nm
Clear Aperture>90%
Chamfer0.1mm@45°
Thickness/Diameter Tolerance±0.05 mm
SizeDia: 2mm-50mm, length: 5mm-180mm
Coating< 0.25% @ 2940 nm

Physical and Chemical Properties

Crystal StructureCubic – la3d
Lattice Constant12.01 Å
Density4.56 g/cm3
Melting Point1950℃
Thermal Conductivity / (W·m-1·K-1 @ 25℃)0.14 W
Specific Heat Capacity / (J·g-1·K-1)0.59
Thermal Expansivity / (10-6·K-1 @ 25℃)[100] orientation – 8.2
[110] orientation – 7.7
[111] orientation – 7.8
Mohs Hardness8.5
Young's Modulus317
Shear Modulus / Gpa54.66
Extinction Ratio25 dB
Poisson Ratio0.25

Spectra

Cr,Er：YAG laser spectrumCr,Er:YAG-absorption-spectrum
Cr,Er:YAG absorption spectrumCr,Er:YAG laser spectrum

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