LiNbO3

Lithium niobate(LiNbO3,LN)crystals are widely used as frequency doubling of wavelengths above 1000nm

Classification:

Detailed introduction

Lithium niobate(LiNbO3,LN)crystals are widely used as frequency doubling of wavelengths above 1000nm and optical parameter amplification of 1064nm pump light,and can also be used for quasi-phase matching.At the same time,lithium niobate crystals are also widely used in photoelectric regulators and waveguide materials as Q switches for Nd:YAG,Nd:YLF and Ti-doped sapphire lasers.

PRODUCT FEATURE

Small size;

Not easy to deliquescence;

High temperature stability;

Large electro-optical coefficient;

Wide range of transparency;

High electro-optical efficiency;

Low absorption loss;

Low damage threshold;

Easy to grow into large crystals;

Stable mechanical and chemical properties;

Specifications
Dimension Tolerance	(W ± 0.1 mm) × (H ± 0.1 mm) × (L ± 0.2mm)
Angle Tolerance	< ± 0.5°
Parallelism	＜20"
Perpendicularity	＜5′
Clear Aperture	Central 90% of the diameter
Surface Quality (Scratch/Dig)	20/10 (MIL-PRF-13830B)
Flatness	<λ/8@633nm
Transmitted Wavefront Distortion	＜λ/4@633nm
Anti-Reflection Coating	According to customer requirements

Chemical and Structural Properties
Crystal Structure	Trigonal crystal system, space group R3c, point group 3m
Lattice Parameter	a=5.148 Å , c=13.863 Å
Melting Point	1253℃
Mohs Hardness	5
Density	4.64 g/cm3
Thermal Conductivity	38W/mK
Thermal Expansion Coefficients	A, 2.0×10^-6/K C, 2.2×10^-6/K

Optical and Nonlinear Optical Properties
Transparency Range	420~5200nm
Therm-optic Coefficient ( λ in μm)	dno/dT = -0.874 x 10^-6
	dno/dT = -0.874 x 10^-6
	dne/dT = 39.073 x 10^-6
Absorption Coefficients	~ 0.1 % / cm @ 1064 nm
NLO Coefficients	d_eff =5.7 pm/V or ~14.6 x d₃₆ for frequency doubling 1300 nm;
	d_eff =5.3 pm/V or ~13.6 x d₃₆ for OPO pumped @ 1064 nm;
	d_eff =17.6 pm/V or ~45 x d₃₆ for quasi-phase-matched structure.
Non-vanished NLO Susceptibilities	d₃₃ = 34.4 pm/V
	d₃₁ = d₁₅ = 5.95 pm/V
	d₂₂ = 3.07 pm/V
Sellmeier Equations (λ in μm)	n_o^{2^{= 4.9048 + 0.11768 / (λ² – 0.04750) – 0.027169λ²}}
Sellmeier Equations (λ in μm)	n_e² = 4.5820 + 0.099169 / (λ² – 0.04443) – 0.021950λ²