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    Cr4+:YAG
    Product Information :

     

    Cr4+:YAG is an excellent passive Q-switch or saturable absorber crystal of choice for 1μm Nd lasers.

    .... Advantages of Cr4+:YAG Crystals
    ....Providing high power laser pulses without electro-optic Q-switches
    More robust and stable than dyes or color centers
    High damage threshold

    .... Specifications

    Orientation

    [100] or [111] within 5°

    Initial absorption coefficience

    0.5~6cm-1 @1064nm

    Initial transmission

    5%~95%@1064nm

    Sizes

    Diameter:3~12mm
    H×W:3×3~12×12mm

    Dimensional tolerances

    Diameter:+0.00/-0.05mm,H&W:±0.5mm

    Barrel finish

    Ground Finish 400# Grit

    Parallelism

    ≤30"

    Flatness

    λ/8@632.8nm

    Surface quality

    20-10(MIL-O-13830A)

    AR coating reflectivity

    ≤0.25% (@1064nm)

     

    .... Physical and Chemical Properties

    Crystal Structure

    Cubic

    Lattice Parameters

    12.01 ?

    Melting Point

    1970℃

    Moh Hardness

    8.5

    Density

    4.56±0.04g/cm3

    Specific Heat (0-20)

    0.59J/g.cm3

    Modulus of Elasticity

    310GPa

    Young's Modulus

    3.17×104Kg/mm2

    Poisson Ratio

    0.3(est.)

    Tensile Strength

    0.13~0.26GPa

    Thermal Expansion Coefficient

    [100]Direction:8.2×10-6/K(0~250℃)

    [110]Direction:7.7×10-6/K(0~250℃)

    [111]Direction:7.8×10-6/K(0~250℃)

    Thermal Conductivity

    14W/m/K(@20℃)

    10.5W/m/K(@100℃)

    Thermal Optical Coefficient (dn/dT)

    7.3×10-6/K

    Thermal Shock Resistance

    790W/m

    Solubility

    Water: Insoluble;
    Common Acids: Slightly





     
     
     
     
     


       
       
     
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