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	a_a = 16 a_c = 4
Specific heat, cal/g°C	0.06
Thermal conductivity , mW/cm °C	46
Dielectric Constant (@ 100 KHz)	e_a = 54 e_c = 43
Transparency range, nm	400 - 5500
Refractive indices @ 633 nm	n_o = 2.175 n_e = 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/m^²
Optical homogeneity	~10^-5
Absorption loss @ 1064 nm	< 0.15 %/cm

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

LiTaO₃
LiTaO3 wafer SAW grade - Lithium Tantalate, LiTaO3 - crystal - elements for pyroelectric detector - EOM - EO crystal - wafers - Lithium Tantalate Substrates for Pyroelectric Detectors - y-cut LiTaO3 - LiTaO3 properties - Electro – Optic Pockels Cells - Optical Waveguide Substrates - Pyroelectric Detector Substrates - Piezoelectric Transducers - wafers- Lithium Tantalate frequency filter - detector - Lithium Tantalate wafers and crystals - LiTaO₃ thin substrates - cylindrical z-cut LiTaO₃ crystal

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

Lithium Tantalate Elements for Pyroelectric Detector

Del Mar Photonics - Newsletter April 2011

Lithium Tantalate crystal ( LiTaO3 ) - Lithium Tantalate frequency filter

Material propeties

Lithium Tantalate crystal ( LiTaO₃ ) - Lithium Tantalate frequency filter