Crystals Materials
V:YAG Crystal for aerospace, medical, and industrial applications
  • High ground state absorption
  • Insignificant excited state absorption
  • The high contrast of the Q-switch
  • Good optical, mechanical, and thermal properties
  • UV-resistant and features a high damage threshold
  • 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
  • V:YAG Crystal is a new material of laser saturable absorber and passive Q-switch in wavelength range of 1.06 - 1.44 μm. It is especially suitable for neodymium laser of 1.3 μm. V:YAG crystal can be used with active laser media such as Nd:YAG, Nd:YAP, Nd:KGW, Nd:YVO4 and provide good lasing characteristics in passive Q-switched lasers.

    Specifications of V3+:YAG Crystal
    Property Value
    Orientation [100] or [110]
    Initial absorption coefficient 0.1~8.5 cm-1 @1064 nm
    Initial transmission 3%~98%
    Wavefront distortion <λ/8 @ 632.8nm
    Thickness/Diameter Tolerance ±0.05 mm
    Surface Flatness <λ/10 @ 633 nm
    Surface quality 10/5 per MIL-O-13830A
    Parallelism < 10 arcsec
    Perpendicularity 10 arcmin
    Clear Aperture > 90%
    Chamfer < 0.2 mm @ 45°
    Coating AR/HR/PR coating
    Physical and chemical properties
    Property Value
    Chemical Formula Cr4+:Y3Al5O12
    Crystal Structure cubic - la3d
    Lattice Parameter 12.01 Å
    Mass Density 4.56 g/cm3
    Melting Point 1970°C
    Mohs Hardness 8.5
    Young's Modulus 335 GPa
    Tensile Strength 2 GPa
    Thermal Conductivity 0.1213 W/m/K
    Specific Heat 0.59 J/g/K
    Thermal Shock Resistance Parameter 800 W/m
    Thermal Expansion 7.7 - 8.2 × 10-6/°C @ 25°C
    Extinction Ratio 25 dB
    Refractive Index @1064 nm 1.83
    Charge Compensating Ion Ca2+, Mg2+

    Stock specification list

    If need other specifications and quantities products, please contact us(
    Part Number Face size Initial Transmission @1064 nm Coating
    V-YAG-001 Ø5 mm T0=30%~95% AR(R<0.2%)@1310-1360 nm
    V-YAG-002 3.0*3.0 mm T0=30%~95% AR(R<0.2%)@1310-1360 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 V3+:YAG laser rod, please specify the specification listed above, for common application, we only need to know the main specification: V-dopant concentration, sizes, and coating. For special request, please specify specification in details for evaluation and fabrication.
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