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* Welcome To BaTiO3 & doped BaTiO3 Crystal *
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BaTiO& doped BaTiO3

Undoped and doped Barium Titanate crystals are the excellent photorefractive materials, their high Self pumped Phase Conjugation (SPPC) reflection and two wave mixing (optical amplification) efficiency, which make them important role for information processing and image storage. In addition, BaTiO3 is an important substrate material for some special film due to its unique ferroelectric and other properties.

Physical Properties:

Structure

Tetragonal(4m) at 13oC<T<132 oC

Cell parameter

a=3.99,c=4.04,(at 26 oC)

Melting Point

1891 K

Density

6.06 g/cm3 at 26 oC

Specific Heat

0.527J/gk(300K)

Thermal conductivity

6 W/mk(300K)

Thermal expansion (10-6k-1)

15.7 //a 6.2 //c

Dielectric constantεr

εa=3000 εc=800

Mohs Hardness

4.5

 

 

 

 

 

 

Optical Properties:

Transmission wavelength

0.43 - 6.30μm

Index of Refraction

 

515 nm

633 nm

800 nm

no

2.4912

2.4160

2.3681

ne

2.4247

2.3630

2.3235

Electro Optic Coefficients

rT13=8+/-2 pm/V

rT33=105-/+10 pm/V

rT42=    1300+/-100 pm/V

Reflectivity of  SPPC ( 0 cut)

50-70 % (Ce: BaTiO3) for λ = 515 nm

40-60% (Pure BaTiO3) for λ = 515 nm

50-80 % (Ce: BaTiO3) for λ = 633 nm

40-60% (Pure BaTiO3) for λ= 633 nm

Two-wave mixing coupling constant

10-40cm-1

Absorption loss

 

515 nm

633 nm

800 nm

a

0.285cm-1

0.108cm-1

0.033cm-1

Wavelength range for photo refractive effect

Undoped BTO :for visible

Ce:BTO:480-780nm

Rh:BTO:720-1060nm

Specifications:

Standard Size

10x1010x510x3,5x5 mm

Thickness

0.5mm1.0mm

Polishing

one or two side polished

Bulk

5x5x5,4x4x4,3x3x3 mm, 0or 45cut,2-6 faces polished

Orientation

100110001, 111

Angle tolerance

better than 0.5

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