Ho: YAG Crystals


  • Wavefront distortion: L/8per inch @633nm
  • Extinction ratio: >28dB
  • Tolerance:Rods with diameter: (+0、-0.05)mm,( ±0.5) mm
  • Surface quality: 10/5 Scratch/dig per MIL-O-1380A
  • Parallelism: Parallelism
  • Perpendicularity: <5arc minutes
  • Aperture: >90%
  • Flatness: λ/10@ 633 nm
  • Product Detail

    Technical parameters

    Test report

    Ho:YAG Ho3+ ions doped into insulating laser crystals have exhibited 14 inter-manifold laser channels, operating in temporal modes from CW to mode-locked . Ho:YAG is commonly used as an efficient means to generate 2.1-μm laser emission from the 5I75I8 transition, for applications such as laser remote sensing, medical surgery, and pumping Mid-IR OPO's to achieve 3-5micron emission. Direct diode pumped systems,and Tm: Fiber Laser pumped system have demonstrated hi slope efficiencies, some approaching the theoretical limit.

    Basic Properties

    Ho3+ concentration range 0.005 – 100 atomic %
    Emission Wavelength 2.01 um
    Laser Transition 5I75I8
    Flouresence Lifetime 8.5 ms
    Pump Wavelength 1.9 um
    Coefficient of Thermal Expansion 6.14 x 10-6 K-1
    Thermal Diffusivity 0.041 cm2 s-2
    Thermal Conductivity 11.2 W m-1 K-1
    Specific Heat (Cp) 0.59 J g-1 K-1
    Thermal Shock Resistant 800 W m-1
    Refractive Index @ 632.8 nm 1.83
    Melting Point 1965℃
    Density 4.56 g cm-3
    MOHS Hardness 8.25
    Young’s Modulus 335 Gpa
    Crystal Structure Cubic
    Standard Orientation <111>
    Y3+ Site Symmetry D2
    Lattice Constant a=12.013 Å

    Technical Parameters

    Wavefront distortion L/8per inch @633nm
    Extinction ratio >28dB
    Wavefront distortion L/8per inch @633nm
    Extinction ratio >28dB
    Tolerance:Rods with diameter (+0、-0.05)mm,( ±0.5) mm
    Surface quality 10/5 Scratch/dig per MIL-O-1380A
    Parallelism <10arc seconds
    Perpendicularity <5arc minutes
    Aperture >90%
    Flatness λ/10@ 633 nm
    ToleranceRods with diameter (+0-0.05)mm,( ±0.5) mm
    Surface quality 10/5 Scratch/dig per MIL-O-1380A
    Parallelism <10arc seconds
    Perpendicularity <5arc minutes
    Aperture >90%
    Flatness λ/10@ 633 nm

    Er YAG02