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Barium titanate (BaTiO3) single crystal

Barium titanate (BaTiO3) single crystal

The main performance parameters

Product Name

BaTiO3 single crystal substrate

Crystal structure

Tetragonal (4mm):  9℃ < T <130.5℃

Lattice constant

a = 3.99Å, c = 4.04Å (26 ℃)

Melting point

1612 ℃

Growth method

TSSG ( Top Seeded Solution Growth)

Permittivity

ea = 3700 ec = 135 (Free state)

ea = 2400 ec = 60 (Clamping state)

Index of refraction

 

515nm

633nm

800nm

no

2.4912

2.4160

2.3681

ne

2.4947

2.3630

2.3235

Transmission wavelength range

430 ~ 6300nm

Electro-optic coefficient

rT13 = 8 ± 2pm / V; rT33 = 105 ± 10pm / V; rT42 = 1300 ± 100pm / V

Self-pumped phase conjugate reflectivity

50 - 70 % for l = 515nm(Ce: BaTiO3)
40 - 60 % (PureBaTiO3) for l = 515nm
50 - 80 % for l = 633nm(Ce: BaTiO3)
40 - 60 % for l = 633nm (PureBaTiO3)

Two-wave mixing coupling coefficient

10 - 40 /cm

Absorption loss

515nm

633nm

800nm

0.285 /cm

0.108 /cm

0.033 /cm

Photorefractive effect in the wavelength range

380 ~ 800nm

Standard Specification

 Orientation

<100>, <001> or <110>, <111>

Size and Thickness

Size:  10x10mm, 10x5mm, 5x5mm or others
Thickness: 0.5mm, 1.0mm or others

Polishing and polarization

Polishing

Single side polished or Double side polished

Polarization

<100>; <110> or <111> can not polarized;
<001> must be polarized

 

Barium titanate (BaTiO3) single crystal has excellent photorefractive properties, with high self-pumped phase conjugate reflectivity and two-wave mixing (light amplification) efficiency. In the optical information storage has enormous potential applications; while it is also an important substrate material.

 

 
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