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    • 摻釹釔鋁石榴石(Nd:YAG)
     
    摻釹釔鋁石榴石(Nd:YAG)

     

    摻釹釔鋁石榴石(Nd:YAG):Nd:YAG是最早和最著名的激光晶體。由于它的很多基本性能優越, Nd:YAG常被用于近遠紅外固態激光及其倍頻,三倍頻應用中。 

    Advantages of Nd:YAG crystals

    • High gain
    • Low threshold
    • High efficiency
    • Low loss
    • Suitable for different modes of operation (cw, pulsed , Q-switched,
    • mode locked, doubling of frequency )
    • Suitable for high-average power lasers
    • Good thermal conductivity and thermal shock characteristics
    • Large mechanical strength
    • High optical quality

    Capabilities: 

    Nd dopant:
    0.6 ~ 1.3 atm%
    Diameter:
    3 ~ 14mm
    Length:
    1 ~ 160mm

    Specifications:

    Orientation:
    <111> or <100> within 5°
    Dimensional Tolerance:
    +/-0.1mm
    Wavefront Distortion:
    <λ/8 at 633nm
    Surface Quality:
    20/10
    Parallelism:
    < 10 arc seconds
    Perpendicularity:
    < 5 arc minutes
    Surface Flatness:
    <λ/10 at 633nm
    Clear Aperture:
    Central 95%
    Chamfer:
    0.15x45°
    Coating:
    1.AR@1064nm R<0.2%
    2.AR@1064nm R< 0.2% & HT@808nm T>95%
    3.HR@1064nm R>99.8% & HT@808nm T>95%
    4.HR@1064nm R>99.8% & HR@532nm R>99% & HT@808nm T>95%

    Properties:

    Chemical Formula
    Nd:Y3A15O12
    Crystal Structure
    Cubic
    Lattice Constants
    12.01?
    Concentration
    ~ 1.2 x 1020 cm-3
    Melting Point
    1970 °C
    Density
    4.56 g/cm3
    Mohs Hardness
    8.5
    Refractive Index
    1.82
    Thermal Expansion Coefficient
    7.8 x 10-6 /K [111], 0 - 250 °C
    Thermal Conductivity
    14 W/m /K @20 °C, 10.5 W /m /K @100 °C.
    Lasing Wavelength
    1064 nm
    Stimulated Emission Cross Section
    2.8x10-19 cm-2
    Relaxation Time of Terminal Lasing Level
    30 ns
    Radiative Lifetime
    550 ms
    Spontaneous Fluorescence
    230 ms
    Loss Coefficient
    0.003 cm-1 @ 1064 nm
    Effective Emission Cross Section
    2.8 x 10-19 cm2
    Pump Wavelength
    807.5 nm
    Absorption band at pump wavelength
    1 nm
    Linewidth
    0.6 nm
    Polarized Emission
    Unpolarized
    Thermal Birefringence
    High

     

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


       PDF to download

     
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