LiTaO3
LiTaO3 is an important multifunctional crystal material with excellent piezoelectric, ferroelectric, acoustooptic and electro-optic effects. LiTaO3 has been successfully used in many devices and equipment, especially in electro-optic devices, infrared detectors and surface acoustic wave devices.
File Download- Product Description
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Polished LT wafer, especially for its good mechanical and electrical coupling, temperature coefficient and other comprehensive performance, is widely used in manufacturing of resonators, high-frequency acoustic surface wave filters, transducers and other electronic communication devices, and applied in many fields like mobile phones, intercom, satellite communication, aerospace etc.
Main Advantages:
High Curie temperature
Large Thermal-electric coefficient
Small dielectric constant
Stable chemical and physical properties
Typical applications:
Acoustic surface wave filter
Resonator
Q switch
Optical modulator
Acoustic and optical switch
Laser multiple frequency multiplier
Optical parametric oscillator
Optical memory
High-temperature and high-frequency ultrasonic detector
Infrared detector
Optical pickup devices
- Material Properties
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Crystal Structure
Trigonal
Lattice constant
a=5.154Å, c=13.783Å
Density
7.45g/cm3
Melting Point
1650℃
Curie Point
603±2℃
Mohs Hardness
5.5-6.0
Dielectric Constant
es11/eo:39~43, es33/eo:42~43；et11/eo:51~54, et33/eo:43~46
Thermal Conductivity
1015wm
Thermal Expansion Coefficient
a1=a2=1.61×10-6/℃, a3=4.1×10-6/℃
Refractive Indices
n0=2.176 ne=2.180 @ 633mn
E-O Coefficient
R33=30.4
Electro-mechanical Coupling factor
R15≥0.3
Pyroelectric Coefficient
2.3×10-7 C/cm2/K
Transmission Range
400nm-5000nm
- Technical Parameter
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Crystro offers:
Size
4" ，6" boule or wafer ,Acoustic or Optical grade
Doping
No Doping or With Fe
Boule Length
≥50mm
Wafer Thickness
0.25，0.35，0.50(mm)
Orientation
Y42°/Y36°/X/Y/Z or Upon Request
Surface Process
Single/Double Sides Polishing
TTV
< 10µm
BOW
± (25 ~40 µm)
Warp
≤35µm
Flat Width
32.0±2.0（mm) or Upon Request
Roughness
Ra≤10Å
Chamfer
0.1mm @45° or round edge
Note: Above parameters for reference only, please contact our sales Rep. for your specific requirement.