钛酸钡单晶（一种铁电材料）BaTiO3 - Barium Titanate Crystal

Description

BaTiO₃ is a very unique crystal with superior photo-refractive and ferroelectric properties. MaTecK supplies both of substrate grade and photo refractive grade BaTiO₃ single crystal with excellent quality and affordable price.

Typical Properties

Crystal Structure:

Tetragonal (4m)

9°C < T < 130.5 °C

a=3.99 Å, c= 4.04 Å

Growth Method:

Top Seeded Solution Growth

Melting Point:

1600 °C

Density:

6.02 g/cm³

Dielectric constants:

e_a = 3700, e_c = 135 (unclamped)

e_a = 2400, e_c = 60 (clamped)

Index of Refraction:

l	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 μm

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		3.392 cm^-1	0.268 cm^-1	0.005 cm^-1

标准 BTO晶体产品 Standard BTO Crystal Products

Refractive Grade BTO: (Fully electric poled with single domain)	3x3x3 mm, 2-4 faces polished 5x5x5 mm, 2-6 faces polished
Substrate grade BTO: (poled, but with domains)	5x5x1.0 mm, <100> or <001> Orientation 1-2 sides polished 10x10x1.0 mm, <100> or <001> Orientation 1-2 sides polished

BTO crystal must be stored in temperature above 10 °C to avoid phase transition which will cause twin or domain inside crystal

分享到：