Del Mar Photonics - Newsletter April 2011

Lithium Tantalate crystal ( LiTaO3 ) - Lithium Tantalate frequency filter

Lithium Tantalate exhibits unique electro-optical, pyroelectric and piezoelectric properties combined with good mechanical and chemical stability and , wide transparency range and high optical damage threshold. This makes LiTaO3 well-suited for numerous applications including electro-optical modulators, pyroelectric detectors, optical waveguide and SAW substrates, piezoelectric transducers etc.

Material propeties

Crystal symmetry Trigonal, 3m
Lattice constant, A a = 5.154       c = 13.783
Density, g/cm3 7.45
Melting point , C 1650
Curie point , C 610
Mohs hardness 6
Solubility Insoluble in water
Color Colorless or light yellow
Thermal expansion coefficient, 10-6/ C aa = 16   ac = 4
Specific heat, cal/gC 0.06
Thermal conductivity , mW/cm C 46
Dielectric Constant (@ 100 KHz) ea = 54    ec = 43
Transparency range, nm 400 - 5500
Refractive indices @ 633 nm no = 2.175   ne = 2.180
Electro-optic coefficients
pm/V @633 nm, high frequency
r33 = 33
r13 = 8
r22 = 20
Nonlinear optical coefficients
p/m/V @ 1064 nm
d22 = 2.0
d31 = - 1
d33 = -21
Pyroelectric Coefficient: -2.3 10-4 C/C/m2
Optical homogeneity ~10-5
Absorption loss @ 1064 nm < 0.15 %/cm

 

Electro Optic Pockels Cells 
Optical Waveguide Substrates 
Pyroelectric Detector Substrates
Piezoelectric Transducers

 

Lithium Tantalate Crystal

we supply LiTaO3 wafers as well as LiTaO3 bulk crystals.

An example of LiTaO3 crystal is shown below

LiTaO3 crystal for EOM (Electro-optic modulator) - request a quote

5 mm (X) x 5 mm (Z) x 40 mm (Y)
Sides 5x5 are polished 20/10 S/D and AR coated
Metal electrodes Au+Cr
lambda/4 flat
< 30" parallel

We have crystals of different cuts and sizes available in stock that can be quickly AR coated for required wavelength and metallized if necessary.

LiTaO3
 
 
 Model   Product Name+   Buy Now 
 CR-LiTaO3-2-2-12.5   LiTaO3 crystal, Y-cut, 2x2x12.5 mm  Buy Now 
 CR-LiTaO3-2-2-13   LiTaO3 crystal, Y-cut, 2x2x13 mm  Buy Now 
 CR-LiTaO3-3.2-3.2-40   LiTaO3 crystal, Y-cut, 3.2x3.2x40 mm  Buy Now 
 CR-LiTaO3-3-3-15   LiTaO3 crystal, Y-cut, 3x3x15 mm  Buy Now 
 CR-LiTaO3-5-5-40   LiTaO3 crystal, Y-cut, 5x5x40 mm  Buy Now 
 CR-LiTaO3-6-20-5   LiTaO3 crystal, Y-cut, 6x20x5 mm  Buy Now 
 CR-LiTaO3-10-10-0.5   LiTaO3 crystal, Z-cut, 10x10x0.5 mm  Buy Now 
 CR-LiTaO3-25-25-100m   LiTaO3 crystal, Z-cut, 25x25 mm, 100 m  Buy Now 
 CR-LiTaO3-5-5-2   LiTaO3 crystal, Z-cut, 5x5x2 mm  Buy Now 
 RAP-LiTaO3-6-6-6   LiTaO3 prism, 90 cut, 6x6x6 mm  Buy Now 
 W-LiTaO3-15-15-100   LiTaO3 wafer, Z-cut, 15x15 mm, 100 m  Buy Now 
 W-LiTaO3-18-18-75   LiTaO3 wafer, Z-cut, 18x18 mm, 75 m  Buy Now 
 WA-LiTaO3-10-0.615   LiTaO3 wafer, Z-cut, ø 10 mm x 0.615 mm  Buy Now 
 WA-LiTaO3-10-50   LiTaO3 wafer, Z-cut, ø 10 mm, 50 m  Buy Now 
 WA-LiTaO3-12-0.6   LiTaO3 wafer, Z-cut, ø 12 mm x 0.6 mm  Buy Now 
 WA-LiTaO3-12-60   LiTaO3 wafer, Z-cut, ø 12 mm, 60 m  Buy Now 
 WA-LiTaO3-12-60   LiTaO3 wafer, Z-cut, ø 12 mm, 60 m  Buy Now 
 WA-LiTaO3-12-60   LiTaO3 wafer, Z-cut, ø 12 mm, 60 m  Buy Now 
 WA-LiTaO3-15-50   LiTaO3 wafer, Z-cut, ø 15 mm, 50 m  Buy Now 
 WA-LiTaO3-20-0.54   LiTaO3 wafer, Z-cut, ø 20 mm x 0.54 mm  Buy Now 

Lithium Tantalate Elements for Pyroelectric Detector