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Broadband,Inc.
〒121-0832
東京都足立区
古千谷本町4-7-9
お問い合わせ
TEL:03-5838-0082
ask@bblaser.com |
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Er:YAG |
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Abal
OptoTek社 (AOTK)
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Erbium-doped
Yttrium Aluminum Garnet Crystal (Er:YAG)
Er:YAG is an excellent laser crystal with a
wide pump band of 600 - 800 nm and lasing
wavelength at 2940nm. It has numerous
applications in a wide range of medical and
dental applications.
Advantages of Er:YAG Crystals
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Wide pump band of 600 - 800 nm
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High slope efficiency
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High optical quality
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Operates in a long-wavelength, high
water peak region
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Ideal for hard tissue removal
Basic Properties
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Crystal
Structure
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Cubic
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Lattice
Parameters
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12.01
Å
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Mohs
Hardness
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8.5
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Melting
Point
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1970°C
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Density
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4.56
g/cm3
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Specific
Heat
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0.59J/g.cm3
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Modulus
of Elasticity
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310GPa
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Tensile
Strength
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0.13~0.26GPa
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Thermal
Conductivity
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14
W/m/K at 20°C,
10.5 W/m/K at 100°C
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Thermal
Expansion Coefficient
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8.2
x 10-6°C-1
[100],
7.7 x 10-6°C-1
[110],
7.8 x 10-6°C-1
[111]
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Thermal
optical Coefficient (dn/dT)
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7.3
x 10-6 °C-1
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Thermal
Shock Resistance
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790W/m
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OPtical Properties
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Er
Dopant Concentration
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50
at% (~ 7 x 1021cm-3)
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Laser
Transition
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4I11/2
to 4I13/2
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Laser
Wavelength
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2940nm
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Photon
Energy
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6.75×10
-20J
at 2940nm
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Emission
Cross Section
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3×10
-20cm2
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Index
of Refraction
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1.79
@ 2940nm
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Pump
Bands
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600~800
nm
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Standard Specifications
| Orientation |
[111]
within 5° |
| Wavefront
Distortion |
≤
0.125l/inch
at 1064 nm |
| Extinction
Ratio |
≥28
dB |
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Rod
Sizes
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Diameter:
3~6mm, Length: 50~120mm
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Dimensional
Tolerances
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Diameter:
+0.00/-0.05mm, Length:
+0.5/-0.2 mm
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Flatness
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λ/10
@633 nm
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Parallelism
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<
10 arc seconds
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Perpendicularity
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<
5 arc minutes
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Surface
Quality
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10/5
Scratch/Dig per MIL-O-13830A
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Barrel
Finish
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50
- 80 micro-inch (RMS)
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Chamfer
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0.006"±0.002"
at 45°± 5°
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Clear
Aperture
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>
Central 90%
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