KINHENG CRYSTAL MATERIAL(SHANGHAI) CO., LTD
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Barium titanate 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 substrate materials.
Properties:
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Crystal Structure
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Tetragonal ( 4m) : 9oC < T < 130.5 oC
a=3.99A, c= 4.04A ,
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Growth Method
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Top Seeded Solution Growth
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Melting Point
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1600 oC
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Density
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6.02 g/cm3
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Dielectric constants
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ea = 3700, ec = 135 (unclamped)
ea = 2400, e c = 60 (clamped)
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Index of Refraction
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515 nm 633 nm 800 nm
no 2.4921 2.4160 2.3681
ne 2.4247 2.3630 2.3235
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Transmission wavelength
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0.45 ~ 6.30 mm
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Electro Optic Coefficients:
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rT 13 = 11.7 ?1.9 pm/V rT 33 =112 ?10 pm/V
rT 42= 1920 ?180 pm/V
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Reflectivity of SPPC
( at 0 deg. cut )
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50 - 70 % ( max. 77% ) for l = 515 nm
50 - 80 % ( max: 86.8%) for l = 633 nm
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Two-wave mixing coupling constant:
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10 -40 cm-1
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Absorption loss:
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l: 515 nm 633 nm 800 nm
a: 3.392cm-1 0.268cm-1 0.005cm-1
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Orientation
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<100>,<110>,<111>±0.5º
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Dimension
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10 x 10 x 1mm 10 x 5 x 1mm 5 x 5 x 1mm
Customization available
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Polish
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Single polish, double polish
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surface roughness
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Surface roughness(Ra):<=10A
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