Crystals Materials
Yb:YAG Crystals for aerospace, medical, and industrial applications
  • Yb Concentration: 0.5- 25 atm.%
  • Length: 3 ~ 150mm
  • Surface Quality: 10/5 Scratch/Dig MIL-O-1380A
  • Parallelism: < 10″
  • Perpendicularity: < 5'
  • Clear Aperture: > 90%
  • Surface Flatness: < λ/10 @ 632.8 nm
  • Coating: AR/HR/PR coating upon customer's request
  • Quality Warranty Period: One year
  • Yb:YAG crystal (Ytterbium-doped Yttrium Aluminum Garnet) is a material extensively used in 1300 nm solid-state lasers. Its broad gain bandwidth, high quantum efficiency, and excellent thermal conductivity make it an ideal choice for diode-pumped laser systems. Compared with the commonly used Nd:YAG crsytal, Yb:YAG crystal has a much larger absorption bandwidth to reduce thermal management requirements for diode lasers, a longer upper-laser level lifetime, three to four times lower thermal loading per unit pump power. Yb:YAG crystal is expected to replace Nd:YAG laser crystal for high power diode-pumped lasers and other potential applications.

    Specifications of Yb:YAG Crystal
    Material Yb:Y3Al5O12
    Yb Doping 0.5 ~ 25atm%
    Orientation [111] crystalline direction
    Dimension Tolerances +0.0/-0.05 mm
    Surface Quality 10/5 S/D
    Parallelism < 10 arcsec
    Perpendicularity < 5 arcmin
    Clear Aperture > 90%
    Wavefront Distortion λ/10 @ 633 nm
    Surface Flatness < λ/10 @ 632.8 nm
    Chamfer < 0.1 mm @ 45°
    Coating AR/HR/PR coating upon customer's request
    Damage Threshold 750mW/cm2 at 1064 nm, TEM00, 10 ns, 10Hz
    Physical and chemical properties
    Chemical Formula Yb:Y3Al5O12
    Crystal Structure Cubic - la3d
    Lattice Constant 12.01Å
    Density 4.56g/cm3
    Melting Point 1970°C
    Thermal Conductivity (W/m/k@25°C) λ/4@632nm
    Specific Heat/(J/g/K) 0.59
    Rupture Stress 1.3-2.6*103 kg/cm2
    Hardness (Mohs) 8.5
    Young's Modulus/GPa 317
    Shear Modulus/Gpa 54.66
    Extinction Ratio 25 dB
    Poisson Ratio 0.25
    Optical properties
    Property Value
    Laser Transition 2F5/2→2F7/2
    Laser Wavelength 1030 nm
    Photon Energy 1.93 x 10-19J (@1030 nm)
    Pump Absorption Band Width 8 nm
    Loss Coefficient 0.003 cm-1
    Diode Pump Band 940 nm or 970 nm
    Emission Cross Section 2.0 x 10-20 cm2
    Fluorescence Lifetime 1.2 ms
    Emission Linewidth 9 nm
    Refractive Index @1.030 μm 1.82
    Thermal Optical Coefficient 9 x 10-6/℃

    Stock specification list

    If need other specifications and quantities products, please contact us(
    Part Number Face size Length Doping, atm.% Coating
    Yb-YAG-0101 2.0*2.0 mm 10.0 mm 1.0 AR/AR@1030+940 nm
    Yb-YAG-0301 3.0*1.0 mm 12.0 mm 3.0 AR/AR@1030 nm, R < 0.2%
    AR/AR@940 nm, R < 0.5%
    Yb-YAG-1001 5.0*5.0 mm 1.0 mm 10.0 AR/AR@940+1030 nm


  • Anti-reflection coatings are available at your specified wavelength.
  • Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
  • To inquiry or order a finished Yb:YAG laser rod, please specify the specification listed above, for common application, we only need to know the main specification: Yb-dopant concentration, sizes, and coating. For special request, please specify specification in details for evaluation and fabrication.
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