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GGG Substrate

Advantage

1.Good optical, mechanical and thermal properties
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  • Gallium Gadolinium Garnet (Gd3Ga5O12 or GGG) single crystal is material with good optical, mechanical and thermal properties which make it promising for use in fabrication of various optical components as well as substrate material for magneto-optical films and high–temperature superconductors.It is the best substrate material for infrared optical isolator (1.3 and 1.5um), which is a very important device in optical communication. It is made of YIG or BIG film on the GGG substrate plus birefringence parts. Also GGG is an important substrate for microwave isolator and other devices. Its physical, mechanical and chemical properties are all good for the above applications.

    Properties:

    Crystal Structure

    M3

    Growth Method

    Czochralski method

    Unit Cell Constant

    a=12.376Å,(Z=8)

    Melt Point

    1800

    Purity

    99.95%

    Densityg/cm3

    7.09

    Hardness (Mho)

    6-7

    Index of Refraction

    1.95

    Size

    10x310x510x1015x15,,20x1520x20

    dia2” x 0.33mm dia2” x 0.43mm 15 x 15 mm

    Thickness

    0.5mm1.0mm

    Polishing

    Single or double

    Crystal Orientation

    <111>±0.5º

    Redirection Precision

    ±0.5°

    Redirection the Edge

    special in 1°

    Angle of Crystalline

    Special size and orientation are available upon request

    Ra

    ≤5Å5µm×5µm


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