Optical grade Lithium Tantalate

Item No.: OLT
Cutting Type: X&Z-cut ±0.2°
Diameter 50.8/76.2/100 ±0.3 mm
Primary Flat(PF) 22mm ±2 mm Perpendicular to X ±0.2°
Second Refer.Flat(RF) 10mm±3 mm:  Cw270°±0.5°from PF/Cw315°±0.5°from OF
Thickness 500um ±5um /1000um ±5um or more
Surface Double sides polished  S/D:20/10
TTV ≤10um
WARP ≤25um
Description Review
Description
Basic materials characteristics  
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
Color Colorless or light yellow
Thermal expansion coefficient, 10-6/ °C aa = 16   ac = 4
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

 
Typical Specifications  
Cutting type X&Z-cut ±0.2°
Diameter 50.8/76.2/100 ±0.3 mm
Primary Flat(PF) 22mm ±2 mm Perpendicular to X ±0.2°
Second Refer.Flat(RF) 10mm±3 mm:  Cw270°±0.5°from OF/Cw315°±0.5°from OF
Thickness 500um ±5um /1000um ±5um or more
Surface Double sides polished  S/D:20/10
TTV ≤10um
WARP ≤25um
Edge Beveling Edge Rounding
Customization acceptable  
 
The possible applications:  
  1.  Quasi-phase Matching for SHG and OPO
  2.  Pyroelectric Infrared Detectors
  3. In laser frequency doubling, nonlinear optics, Pockels cells, optical parametric oscillators, Q-switching devices for lasers, other acousto-optic devices, optical switches for gigahertz frequencies
  4. Optical waveguides&optical spatial low-pass (anti-aliasing) filters.
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