Physical and
Chemical Properties
|
Crystal Structure |
Orthorhombic |
Lattice Parameters |
a = 12.96 A°,b = 10.56 A,c = 6.49A° |
Density |
3.6
g/cm3 |
Melting Point |
~ 1000 °C |
Ferroeletric transition temperature |
~810°C |
Mohs Hardness |
~5 |
Thermal Expansion
Coefficients, /°C |
a1=1.01x10^-5, a2=1.37x10^-5, a3=-4.17x10^-6 |
Hygroscopic Susceptibility |
No |
Dielectric Constant |
Eeff =
13.0 |
Color |
Colorless |
Ionic conductivity
(room temperature, 10kHz) |
10^
-8 S/cm |
Optical Properties |
|
Transmitting
range |
350
~ 4500 nm |
Sellmeier equations |
nx2=2.15559
+ 0.93307[1-(0.20994/λ)2]
- 0.01452λ2
ny2=2.38494 + 0.73603[1-(0.23891/λ)2]
- 0.01583 λ2
nz2=2.27723 + 1.11030[1-(0.23454/λ)2]
- 0.01995λ2
|
Absorption coefficient: |
< 0.05 % / cm @ 1064 nm < 4 % /cm @ 532 nm |
Nonlinear
Properties |
|
Nonlinear
Coefficients:
|
d15 = 2.0 pm/V
d24 = 3.6 pm/V
d31 = 2.0 pm/V
d32 = 3.6 pm/V
d33 = 8.3 pm/V
deff for Type II SHG@1064nm= 2.39 pm/V |
Electro-optic
coefficients:(pm/V) |
|
Xcut Propagation
Low frequency |
Y cut Propagation
Low frequency |
r13 |
10.6 |
|
r23 |
12.5 |
|
r33 |
35 |
38.5 |
|
Nonlinear
coefficients
(@ 10-64nm) |
d31=2.54pm/V,
d31=4.35pm/V, d31=16.9pm/V d24=3.64pm/V,
d15=1.91pm/V at 1.064 mm |
Static Half Wave Voltage
@1064nm
|
1445 V for a pair of 4x4x10mm
1,600 V for a pair of 4x4x20mm
1,700 V for a pair of 6x6x7mm
2,400 V for a pair of 6x6x20 mm
|
Damage
Threshold: pulse 10 nsec |
> 600 MW/cm2 @ 1064
nm
|