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Laser Crystal Er:YAG

Er YAG, Erbium-doped Yttrium Aluminum Garnet (Er: Y3 Al5 O12 or Er:YAG), combine various output wavelengths with Er:YAG’s superior thermal and optical properties. It is an excellent laser crystal that lasers at 2.94 μm. This wavelength is the most readily absorbed into water and hydroxylapatite of all existing wavelengths and is considered a highly surface cutting laser. It is a well-known material for medical applications.
Er YAG laser Crystal—50% Erbium-doped in YAG, which can stimulate 2940nm laser used in medical anddentistry.
The emission wavelength of Er YAG with a doping concentration of 50% is 2940nm, which is at the position of the water absorption peak and can be strongly absorbed by water molecules. Therefore, it is widely used in plastic surgery and dentistry.
The emission wavelength of Er YAG with a doping concentration of 50% is 2940nm, which is at the position of the water absorption peak and can be strongly absorbed by water molecules. Therefore, it is widely used in plastic surgery and dentistry.

Datasheets E-mail Message
Laser Crystal Er:YAG
APPLICATION

  • Optical Communication

  • 1600nm laser
  • Medical Applications
  • 2940nm laser

KEY FEATURES

  • Large electro-optic coefficient

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  • Not easy to deliquesce
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  • High sensitive
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  • Wide transparency range
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  • High optical damage threshold
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  • Stable chemical and physical properties

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PRODUCT PARAMETERS
Material Specifications
Direction [100] or [100] <± 0.5。
Parallelism 10〞
Vertical Degree 5ˊ
Surface Quality 5-Oct
Wavefront Distortion <­λ/8@632 nm
Surface Flatness <λ/10@632.8nm
Clear Aperture >90%
Chamfering 0.1mm@45°
Thickness/Diameter Tolerance ±0.05 mm
The Largest Size Diameter:2mm-50mm, Length:5mm-180mm
Coating < 0.25% @ 2940 nm

 

Physical and Chemical Properties
Chemical Formula Er:YAlO3
Crystal Structure Rhombic Crystals-Pbnm
Molecular Mass 163.884
Shape Translucent Crystalline Solid
Direction b Shaft-Pbnm
Melting Point 1870 °C
Density 5.35 g/cm3
Specific Heat Capacity 0.557 J/g·K
Coefficient of Thermal Conductivity 11.7 W/m·K (a-axis),
10.0 W/m·K (b-axis),
13.3 W/m·K (c-axis)
Coefficient of Thermal Expansion 2.32 x 10-6 K-1 (a-axis),
8.08 x 10-6 K-1 (b-axis),
8.7 x 10-6 K-1 (c-axis)
Precise Quality 163.872 g/mol
Single Isotope Mass 163.872 g/mol

 

Optical and Spectral Properties
Laser Transition 4I11/2→4I13/2 (High Doping), 
4I13/2 → 4I15/2 (Low Doping)
Laser Wavelength 2940 nm (High Doping); 1645 nm (Low Doping)
Photon Energy 6.75×10-20J@2940nm
Pump Absorption Bandwidth 600~800 nm (High Doping); 1530 nm (Low Doping)
Damage Threshold >500MW/cm2
Emission Cross Section 3×10-20 cm2
Fluorescence Lifetime 0.23 ms (High Doping); 2~5 ms (Low Doping)
Refractive Index 1.7838@2940 nm
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