Yb:YAG

Yb:YAG
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Yb: YAG Crystal for 1030 nm laser

Yb:YAG is a laser crystal doped with trivalent ytterbium ions in yttrium aluminum garnet crystal and can emit a 1030 nm near-infrared laser. Yb:YAG crystal has the following characteristics:

  • High quantum efficiency
  • No excited state absorption and up-conversion
  • High concentration tolerance
  • Long fluorescence lifetime
  • Wide absorption band and broad emission range
  • Robust optical, mechanical, and thermal properties, etc., which makes it have great potential application in high efficiency, high power diode-pumped solid-state lasers.
  • Good optical quality
  • Wide absorption bands
  • Low quantum defect
  • High slope efficiency
  • Low working temperature
  • Linearly polarized emission and single-mode
  • Simple energy level structure

Material Specifications

MaterialYb: YAG
Yb Concentration of Tolerance（atm％）0.5, 1, 2, 3, 5, 7.5 , 10, 15, 20, 25%
Orientation[001] or [110] or [111] <±0.5°
parallelism10〞
Perpendicularity5ˊ
Surface Quality10-5(MIL-O-13830A)
Wavefront Distortionλ/4@632nm
Surface Flatnessλ/8@632nm
Clear Aperture>95%
Chamfer<0.1×45°
Thickness/Diameter Tolerance±0.05 mm
The Largest Sizedia 50×100 mm
CoatingAR/AR@940+1030；HR@940+AR1030

Physical and Chemical Properties

Crystal StructureCubic – la3d
Lattice Constant12.01 Å
Density4.56±0.04 g/cm3
Melting Point1970 °C
Thermal Conductivity/（W·m-1·K-1 @ 25°C）λ/4@632nm
Specific Heat Capacity/（J·g-1·K-1）0.59
Thermal-optical Coefficient（dn / dT）7.3×10-6/℃
Thermal Expansivity /（10-6·K-1 @ 25°C）8.2 [100] 7.7 [110] 7.8 [111]
Mohs Hardness8.5
Young's Modulus/ GPa317
Shear Modulus/ Gpa54.66
Extinction Ratio25 dB
The Tensile Strength/ Gpa0.13-0.26
SolubilityWater: insoluble; Common acid: slightly soluble
Poisson Ratio0.25

Optical and Spectral Properties

Laser Transition2F5/2→2F7/2
Laser Wavelength1030 nm
Photon Energy1.93×10-19J(@1030 nm)
Pump Absorption Bandwidth8 nm
Loss Coefficient0.003 cm-1
Diode Pump Band940 nm or 970 nm
Radiation Cross Section2.0×10-20 cm2
Fluorescence Lifetime1.2 ms
Emission Line Width9 nm
Refractive Index@ 1.030μm1.82
Thermal Coefficient of Light9× 10-6/℃

Absorption and Emission Spectra

Yb YAG laser crystal absorption spectrum CRYLINKYb YAG laser crystal emission spectrum CRYLINK

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