LiNbO3 Lithium niobate

Lithium niobate is a ferroelectric material suitable for a variety of applications. Lithium niobate is a ferroelectric material suitable for a variety of applications. Its versatility is made possible by the excellent electro-optic, nonlinear, and piezoelectric properties of the intrinsic material. Lager DimensionBroad spectral transmission ranges from 0.4 µm to 5.0 µm with an OH- absorption at 2.87 µmNo moisture

 

Basic Properties of LiNbO3:

Crystal Structure:	Trigonal, Space group R3C, Point group 3m
Cell Parameters:	a=5.148Å , c=13.863Å
Melting Point:	1253° C
Curie Temperature:	1140° C
Mohs Hardness:	5
Density:	4.64 g/cm3
Deliquescence	None
Optical Homogeneity	~ 5x10-5/cm
Transparency Range	420nm-5200nm
Absorption Coefficient:	~0.1%/cm @ 1064nm
Refractive indices at 1064nm:	ne= 2.146, no = 2.220 @ 1300 nmne = 2.156, no = 2.232 @ 1064 nmne = 2.203, no = 2.286 @ 632.8 nm
Thermal Expansion Coef. (@ 25¡ãC)	//a, 2.0x10-6/K
	//c, 16.7x10-6/K
Thermal Conductivity Coefficient:	38 W/m/K at 250C
Thermal Optical Coefficient:	dno/dT=-0.874x10-6/K at 1.4m mdne/dT=39.073x10-6/K at 1.4m m
The Sellmeier equations( l in m m)	no2 = 4.9048 + 0.11768/(l 2-0.04750)-0.027169l 2ne2 = 4.5820 + 0.099169/(l 2-0.04443)-0.021950l 2

 Nonlinear Optical Properties:

NLO Coefficients	d33 = 34.4 pm/Vd31 = d15 = 5.95 pm/Vd22 = 3.07 pm/V
Efficiency NLO coefficients	deff =5.7 pm/V or ~14.6 x d36 (KDP) for frequency doubling 1300 nm;deff =5.3 pm/V or ~13.6 x d36 (KDP) for OPO pumped at 1064 nm;deff =17.6 pm/V or ~45 x d36 (KDP) for quasi-phase-matched structure.
Electro-Optic Coefficients	gT33 = 32 pm/V, gS33 = 31 pm/V,gT31 =10 pm/V, gS31=8.6 pm/V,gT22 = 6.8 pm/V, gS22= 3.4 pm/V,
Half-Wave Voltage, DC	Electrical field ||z, light ^z:	Electrical field|| x or y, light ||z:
	3.03 KV	4.02 KV
Damage Threshold	100 MW/cm2 (10 ns, 1064nm)

  Application:Optical parametric oscillation, difference frequency mixing to generate tunable infrared wavelengths, and second harmonic generation..Lithium niobate is particularly effective for second harmonic generation of low power laser diodes in the 1.3 to 1.55 µm range.,For infrared generation by difference frequency mixing, the peak power limit is considerably lower than for 1.064 µm, being about 40 MW/cm2  The Sellmeier equations (l in µm ): no2 = 4.9048 + 0.11768/(l2-0.04750)-0.027169l 2ne2 = 4.5820 + 0.099169/(l 2-0.04443)-0.021950l2 The Fe:LiNbO3 and MgO:LiNbO3 crystals is available too. The MgO: LiNbO3 has similar effective nonlinear coefficients to pure LiNbO3. Its Sellmeier equations (for MgO dopant 7 mol%) are: no2 = 4.8762+ 0.11554/(l2-0.04674)-0.033119l2ne2 = 4.5469+ 0.094779/(l2-0.04439)-0.026721l2 LiNbO3s Specifications:

Material:	Laser grade LiNbO3
Orientation:	±0.5 o
Dimensional Tolerance:	±0.1mm
Surface quality:	20/10 Scratch/Dig per MIL-O-13830B
Flatness:	l/8 at 633 nm
Perpendicularity:	5 arc min
Parallelism:	better than 20 arc sec
Clear Aperture:	> Central 90%
AR Coating:	AR coating with R < 0.2% at center wavelength

LiNbO3 Lithium niobate