Nd: YAG Crystals

  • Product name: Nd:YAG
  • Chemical Formula: Y3Al5O12
  • Crystal structure: Cubic
  • Lattice constant: 12.01Å
  • Melting point: 1970°C
  • Density: Density3
  • Reflective Index: 1.82
  • Product Detail

    Technical parameters

    Test report


    Nd: YAG crystal rod is used in Laser marking machine and other laser equipment. 
    It is the only solid substances that can work continuously at room temperature, and is the most excellent performance laser crystal.
    Also, the YAG (yttrium aluminium garnet) laser can be doped with chromium and neodymium in order to enhance the absorption characteristics of the laser.The Nd,Cr:YAG laser is a solid state laser.Chromium ion(Cr3+) has a broad absorption band; it absorbs the energy and transfers it to the neodymium ions(Nd3+) by way of dipole-dipole interactions.Wavelength of 1064nm is emitted by this laser.
    The laser action of Nd:YAG laser was first demonstrated at the Bell Laboratories in the year of 1964.The Nd,Cr:YAG laser is pumped by a solar radiation.By doping with chromium,the energy absorption capacity of the laser is enhanced and ultra short pulses are emitted.

    Basic Properties of Nd:YAG

    Product name Nd:YAG
    Chemical Formula Y3Al5O12
    Crystal structure Cubic
    Lattice constant 12.01Å
    Melting point 1970°C
    orientation [111] or [100]within 5°
    Density 4.5g/cm3
    Reflective Index 1.82
    Thermal Expansion Coefficient 7.8×10-6 /K
    Thermal Conductivity (W/m/K) 14, 20°C / 10.5, 100°C
    Mohs hardness 8.5
    Radiative Lifetime 550 us
    Spontaneous Fluorescence 230 us
    Linewidth 0.6 nm
    Loss Coefficient 0.003 cm-1 @ 1064nm

    Basic Properties of Nd,Cr:YAG

    Laser type Solid
    Pump source Solar Radiation Solar Radiation
    Operating wavelength 1.064 µm 1.064 µm
    Chemical formula Nd3+:Cr3+:Y3Al5O12 Nd3+:Cr3+:Y3Al5O12
    Crystal structure Cubic Cubic
    Melting point 1970°C 1970°C
    Hardness 8-8.5 8-8.5
    Thermal conductivity 10-14 W/mK 10-14 W/mK
    Young’s modulus 280 GPa 280 GPa

    Technical Parameters

    Dimension maximum diameter of dia.40mm
    Nd Dopant Level 0~2.0atm%
    Diameter Tolerance ±0.05mm
    Length Tolerance ±0.5mm
    Perpendicularity 5′
    Parallelism 10″
    Wavefront distortion L/8
    Flatness λ/10
    Surface quality 10/ 5 @ MIL-O-13830A
    Coatings HR-Coating: R>99.8%@1064nm and R5% @808nm
    AR-Coating (Single layer MgF2)R<0.25% per surface (@1064nm)
    Other HR coatings Such as HR @1064/532 nm, HR @946 nm, HR @1319 nm and other wavelengths are also available
    Damage Threshold >500MW/cm‍‍‍‍‍‍‍‍‍‍2

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