Nonlinear and Electro-Optical Products

Product Description

Lithium Niobate is a noncentrosymmetric large band-gap ferroelectric oxide crystal. It has nonlinear optical applications in harmonic generation, optical parametric oscillation and electro-optic modulation.

It offers excellent transmission properties coupled with a high extinction ratio and low half-wave voltage.

Deltronic Crystal grows large diameter high quality optical crystals from a congruent melt, using the Czochralski method.
 

Applications

  • Electro-optic Amplitude Modulators
  • Electro-optic Phase Modulators
  • Electro-optic Q-switches
  • BPM Optical Parametric Conversion
  • Binary Optics

 

Features

  • Excellent Transmission Properties
  • High Extinction Ratio
  • Grown by Czochralski Method

 

PDF of this product overview

 

Property at 25°C Value
Empirical Formula LiNbO3
Congruent Melt Composition 48.6 mole % Li2O
Congruent Melting Point (°C) 1253
Crystal Structure trigonal
Space Group R3c
Point Group 3m
Curie Temperature (°C) 1143
Density (g-cm-3) 4.612
Hardness (moh) 5
Thermal Expansion Coefficient (°C-1) a = 16.7x10-6
c = 2.0 x 10-6
Resistivity (ohm-cm) > 1014 at 200°C
Bandgap (eV) 3.7
Lattice Constant (Å) a = 5.14829 (hex)
c = 13.8631 (hex)
Spontaneous Polarization (Coul/m2) 0.71
Dielectric Constants ås33 = 29 ås11 = 44
ås33 = 30 åT11 = 84
NLO Coefficients at 1064nm (pm/V) d31 = -1.4 d33 = -2.1 d22 = 2.2
Refractive Index, 1064nm no = 2.2340, ne = 2.1554
Electro-optic Coefficients at 633nm r13 = 9.6 r22 = 6.8 r33 = 30.9
[pm/V] (constant tension) r51 = 32.6 rc = 21.1

 

Crystallographic Orientations, Dimensions, and Tolerances
Standard Sizes To customer specifications
Dimension Tolerances ±0.25mm on polished faces
Orientations To customer specifications (X-ray oriented to ±0.2 degrees)
Flatness <λ/10 at 633nm
Surface Quality <10/5 (scratch/dig)
Transmitted Wavefront <λ/10 at 633nm
Edges 0.1 to 0.15mm chamfer at 45°
Dopants To customer specification
Anti-reflection Coating Specify wavelength of operation