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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

Density（g/cm³）

6.02

Dielectric Constants

e_a = 3700, e_c = 135 (unclamped)

e_a = 2400, e_c = 60 (clamped)

Index of Refraction

515 nm 633 nm 800 nm

n_o 2.4921 2.4160 2.3681

n_e 2.4247 2.3630 2.3235

Transmission Wavelength

0.45 ~ 6.30 mm

Electro Optic Coefficients

r^T ₁₃ = 11.7 ?1.9 pm/V r^T ₃₃ =112 ?10 pm/V

r^T 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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Crystal Structure	Tetragonal ( 4m) : 9^℃ < T < 130.5 ^℃ a=3.99A, c= 4.04A ,
Growth Method	Top Seeded Solution Growth
Melting Point（℃）	1600
Density（g/cm³）	6.02
Dielectric Constants	e_a = 3700, e_c = 135 (unclamped) e_a = 2400, e_c = 60 (clamped)
Index of Refraction	515 nm 633 nm 800 nm n_o 2.4921 2.4160 2.3681 n_e 2.4247 2.3630 2.3235
Transmission Wavelength	0.45 ~ 6.30 mm
Electro Optic Coefficients	r^T ₁₃ = 11.7 ?1.9 pm/V r^T ₃₃ =112 ?10 pm/V r^T 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