Typical  Properties

Crystal Structure

Hexagonal    a=5.148  Å,  c= 13.863Å

Growth Method

CZ

Melting Point

1250 ^oC

Density

 4.64 g/cm³

Curie Temperature

~ 1160 ^oC

Hardness

 5 Mohs

Thermal expansion (x10^-6/ ^oC)

a₁₁: 15.4       a₃₃:  7.5

Index of Refraction

ho=2.286       he=2.203   at 632.8 nm

Transmission wavelength

0.4 ~ 2.90 m 

Nonlinear coefficient

Electro-optical Coefficient

d₃₃=34.45,  d₃₁=d₁₅=5.95    d₂₂=13.07                           (pmV^-1)

g₁₃=8.6, g₂₂=3.4, g ₃₃=30.8, g₅₁=28.0, g ₂₂=6.00              (pmV^-1)

Transparency Range

Transmissivity

370 ~ 5000   nm

 > 68 % @ 632.8 nm

Sellmeier Equation ( l in mm )

h_o² (l) = 4.9048 + 0.11768/(l² –0.04750) – 0.027169 ´ l²

h_e² (l) = 4.5820 + 0.099169/(l² –0.04443) – 0.021950 ´ l²

LiNbO₃ Finished Components

Size

Any size below 3" diameter boule

Tolerance of size

Z-axis: ± 0.3 mm

X-axis and Y-axis: ± 0.1 mm

Chamfer

Less than 0.5 mm at 45^o ± 5^o

Accuracy of orientation

Z-axis: < 5'

X-axis and Y-axis: < 10'

Parallelism

< 10''

Finish

10/5 scratch/dig

Flatness

l/8 @632.8 nm

AR-coating

Reflectance < 0.2% @ 1064 nm

Wavefront distortion

< l/4 @ 633 nm

Extinction ratio

> 400:1 @ 633 nm, F 6mm beam