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BaTiO3 Substrate

Advantage

1.Excellent photorefractive properties

2.High reflectivity of self-pumped phase conjugation


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  • BaTiO3 single crystals have excellent photorefractive properties, high reflectivity of self-pumped phase conjugation and two-wave mixing (optical zoom) efficiency in optical information storage with huge potential applications, which is also an important substrate materials.

    Properties:

    Crystal Structure

    Tetragonal ( 4m) : 9 < T < 130.5 

    a=3.99A, c= 4.04A ,

    Growth Method

    Top Seeded Solution Growth

    Melting Point

    1600 

    Densityg/cm3

    6.02

    Dielectric Constants

    ea = 3700, ec = 135 (unclamped)

    ea = 2400, e c = 60 (clamped)

    Index of Refraction

    515 nm 633 nm 800 nm

    no 2.4921 2.4160 2.3681

    ne 2.4247 2.3630 2.3235

    Transmission Wavelength

    0.45 ~ 6.30 mm

    Electro Optic Coefficients

    rT 13 = 11.7 ?1.9 pm/V rT 33 =112 ?10 pm/V

    rT 42= 1920 ?180 pm/V

    Reflectivity of SPPC

    ( at 0 deg. cut )

    50 - 70 % ( max. 77% ) for l = 515 nm

    50 - 80 % ( max: 86.8%) for l = 633 nm

    Two-wave Mixing Coupling Constant

    10 -40 cm-1

    Absorption Loss

    l: 515 nm 633 nm 800 nm

    a: 3.392cm-1 0.268cm-1 0.005cm-1


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