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    • 摻釹釩酸釓晶體(Nd:GdVO4)
     
    摻釹釩酸釓晶體(Nd:GdVO4)

     

    摻釹釩酸釓晶體(Nd:GdVO4)是和摻釹釩酸釔單晶(Nd:YVO4)性質相近的優秀的激光晶體,具有優良的物理、光學、機械性能,是理想的激光二極管泵浦全固態(DPSS)微小型激光器的激光工作物質之一.它比Nd:YAG有更高的斜率效率,比釩酸釔有更好的熱導和高輸出功率,故在高功率DPSS場合,使用Nd:GdVO4的效果會比使用Nd:YAG和Nd:YVO4更好。

    Capabilities:

    Nd dopant:
    0.2 ~ 3 atm%
    Width x Height:
    1x1 ~ 16x16mm
    Length:
    0.02 ~ 20mm

    Specifications:

    Orientation:
    a-cut( ± 0.55° )
    Dimensional Tolerance:
    +/-0.1mm
    Wavefront Distortion:
    <λ/8 at 632.8nm
    Surface Quality:
    20/10
    Parallelism:
    < 10 arc seconds
    Perpendicularity:
    < 5 arc minutes
    Surface Flatness:
    <λ/10 at 632.8nm
    Clear Aperture:
    Central 95%
    Chamfer:
    0.15x45°
    Coating:
    1.AR@1064nm R<0.1%
    2.AR@1064nm R< 0.1% & HT@808nm T>95%
    3.HR@1064nm R>99.8% & HR@532nm R>99% & HT@808nm T>95%

    Properties:

    Crystal Structure
    Zircon Tetragonal, space group D4h, a=b=7.21, c=6.35
    Melting Point
    1780°C
    Density
    5.47g/cm3
    Mohs Hardness
    Glass-like, ~ 5
    Thermal Expansion Coefficient
    aa=1.5x10-6/K, ac=7.3x10-6/K
    Thermal Conductivity Coefficient
    11.7 W/m/K <110>
    Peak Absorption Wavelength
    808.5 nm
    Lasing Wavelength
    912.6 nm, 1063.1 nm, 1341.3 nm
    Crystal Class
    positive uniaxial, no=na=nb ne=nc
    no=1.9854, ne=2.1981, @ 1064nm
    no=2.038184, ne=2.292962, @ 532nm
    no=1.9977322, ne=2.219864, @ 808nm
    Thermal Optical Coefficient
    dn/dT=4.7x10-6/K
    Stimulated Emission Cross-Section
    7.60x10-19cm2 , @1064 nm
    Fluorescent Lifetime
    95 ms (1 atm% nd doped) @ 808 nm
    Loss Coefficient
    0.003 cm-1@ 1064 nm
    Absorption Coefficient
    74 cm-1 @ 808 nm (1.2%)
    Absorption Length
    0.32 mm @ 808 nm
    Intrinsic Loss
    Less 0.1% cm-1 , @1064 nm
    Linewidth
    0.6 nm
    Polarized Laser Emission
    parallel to optic axis (c-axis)
    Diode Pumped Optical to Optica
    Efficiency
    > 60%

    Sellmeier Equation (for pure GdVO4 crystals)


    ne2=4.734369+0.1216149/(l2 - 0.0523664) - 0.013927l2
    no2=3.8987165+0.05990622/(l2 - 0.0514395) - 0.011319l2

     

    Note: Kinds of sizes, coating are available upon request.


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