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Nd：YAG crystal
    Nd:YAG（Neodymium-doped Yttrium-Aluminum Garnet）crystal is the best of the rare earth garnet materials that are characterized by four-level system which permits low threshold operation both in pulsed and CW mode. It is the most mature and widely used solid-state laser material adopted by R&D, medical, industrial and military customers. Its properties are a good compromise between the strengths and weaknesses of its competition. 
  • DETAIL
  • STANDARD PRODUCT
  • BASIC PROPERTIES

  • Applications:

       ● Nd:YAG can produce blue laser with the frequency-doubling of 946nm

        ● Nd:YAG can be operated in a very high power laser up to kw level at 1064nm

        ● Nd:YAG can be Q-switched with Cr4+YAG directly

        ● Nd:YAG can be used for high power green laser for SHG@1064nm

      

    CRYSTIK‘s Nd：YAG is featured by：

        ● High Gain, High Efficiency, Low Threshold.

        ● High Optical Quality and low Loss at 1.06 mm.

        ● Good Mechanical and Thermal Properties.

        ● Easy to operate in Q-Switch, pulsed, CW mode.

     

    CRYSTIK offers：

        ● Standard size crystal for application.

        ● Strict Quality Control.

        ● 1 - 3 Weeks Delivery.    

        ● Attractive Price and quantity discount.

        ● Mass Production to Support Industrial and Commercial Applications.

  •  

    Dimension Tolerance

    D(+0/-0.05)  * L(+/-0.5) mm

    Cut Angle


    Angle Tolerance

     +/-5°

    Perpendicularity

     ≤5′

    Scratch/Dig

    10/5

    Chamfer

    <0.1mmx45°

    Parallelism

     ≤10″

    Chips

    <0.1mm

    Flatness

     λ/10@633nm

    Clear Aperture

    ≥95%

    Wavefront Distortion

     λ/6@633nm

    Extinction Ratio

     25dB

    Coatings

    C1:AR@1064(R<0.2%)

    C2:AR@1064(R<0.2%)&808(R<0.5%)

    C3:AR@946(R<0.2%)&473(R<0.5%)

    C4:HR@946(R>99.8%)&473(R>99.5%)

         &HT@1064(T>90%)&1319(T>90%)&808(T>95%)

    Damage Threshold

    1GW/cm² 10ns 10Hz at 1064nm

  • Physical Properties:


    Chemical Formula

    Nd:Y3Al5O12

    Crystal Structure

    Cubic

    Lattice Parameter

    12.01Å

    Density

    4.55g/cm3

    Melting Point

    1970oC

    Mohs Hardness

    8.5

    Water Absorption

    Zero

    Extinction Ratio

    > 28 dB (according to actual sizes)

    Thermal Expansion Coefficient

    [100] Orientation--8.2x10-6/oC (0-250oC)

    [110] Orientation--7.7x10-6/oC (0-250oC)

    [111] Orientation--7.8x10-6/oC (0-250oC)

    Thermal Conductivity

    20oC---0.0320 cal/secoC cm

    40oC---0.0290 cal/secoC cm

    100oC--0.0250 cal/secoC cm

    200oC--0.0225 cal/secoC cm

    Modulus of Elasticity

    44.9x106 PSI

    Tensile Strength

    25-30x106 PSI

     Optical properties: 


    Laser Transition

    4F3/2 --> 4I11/2

    Photon Energy

    1.86×10-19J

    Lasing Wavelength

    1.064µm, 1.320µm

    Emission Linewidth

    4.5Å @1.064µm

    Stimulated Emission Cross Section

    2.8x10-19 cm2 @1.064µm

    Radiative Lifetime

    550µs

    Fluorescence Lifetime

    230µs

    Pumping Wavelength

    0.8075µm

    Absorption Coefficient

    7.2 cm-1 @0.808µm

    Absorption Length

    1.42 mm @0.808µm

    Intrinsic Loss Coefficient

    0.003 cm-1 @1.064µm

    Polarized Laser Emission

    non-polarization

    Refractive Index

    1.820 @1.064µm

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