Er:YAG
Er:YAG combine various output wavelength with the superior thermal and optical properties of YAG. Its an excellent laser crystal which lasers at 2.94um highly surface cutting laser. It is a well known..
ProductsOptical CrystalLaser crystalEr:YAG
Er:YAG
Er:YAG combine various output wavelength with the superior thermal and optical properties of YAG. It’s an excellent laser crystal which lasers at 2.94um highly surface cutting laser. It is a well known material for medical applications.
ADVANTAGES
●Very high slope efficiency
●Operates well at room temperature
●Operate in a relatively eye-safe wavelength range
Laser Rods
● Flat/flat
●Parallel/ anti-parallel wedged
●Brewster angle
●Concave/convex radii
●Cylinder grooved
Properties
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Chemical Formula
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Er3+: Y3Al5O12
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Laser Transition
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4I11/2 to 4I13/2
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Photon Energy
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6.75×10-20J@2940nm
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Laser Wavelength
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2940nm
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Emission Cross Section
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3×10-20 cm2
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Index of Refraction
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1.79@2940nm
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Pump Bands
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600~800nm
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Moh Hardness
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8.25
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Melting Point
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1965℃
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Thermal Conductivity
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11.2W/m/K
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Thermal shock Resistance
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790W/m
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Specifications
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Material
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Er:YAG
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Dopant concentration
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Er: ~50 at%
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Orientation
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<111>
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Dimensions
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Diameter:2mm-50mm, Length:5mm-180mm(Upon customer’s request)
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Diameter tolerance
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+0/-0.04mm
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Length tolerance
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+0.5/-0mm
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Chamfer
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0.1mm@45°
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Extinction Ratio
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>25dB(depends on actual size)
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Flatness
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<λ/10@632.8nm
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Barrel Finish
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Ground Finish 400#Grit
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Surface Quality
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10-5 @MIL-0-13830A
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Chips
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<0.1mm
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Perpendicularity
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<5 arc minutes
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Parallelism
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<10 arc seconds
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Wavefront Distortion
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λ/8 per inch @632.8nm
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Damage Threshold
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>500MW/cm2
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Anti-Reflection coating
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R<0.20%@2940nm per surface
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Note: Slabs, thread rod, Nd:YAG, Cr:YAG,Ce:YAG, Tm:YAG,Ho:YAG and other ion doped YAG crystals are also available upon request. Er:YAG crystals with diffusion bonded undoped YAG endcaps or Q-switch are also available.