LiNbO3&MgO:LiNbO3

Lithium Niobate (LiNbO3) is widely used as electro-optic modulator and Q-switch for Nd:YAG, Nd:YLF and Ti:Sapphire lasers as well as modulator for fiber optics, etc. The transverse modulation is mostly employed for LiNbO3 crystal.

Also LiNbO3 Crystal is widely used as frequency doublers for wavelength >1um and optical parametric oscillators (OPO) pumped at 1064 nm as well as quasi-phase-matched (QPM) devices.

Properties

Large Electro-Optic (E-O) coefficients

Large Acousto-Optic (A-O) coefficients

Applications

Frequency doublers

Optical parametric oscillators (OPO)

Quasi-phase-matched (QPM) device

Q-switches and modulator

Properties

Crystal Structure

Trigonal, space group R3c

Cell Parameters

a = 0.515Å, c = 13.863Å, Z = 6Å

Melting Point

1255±5^oC

Curie Point

1140±5^oC

Mohs Hardness

5

Density

4.64g/cm³

Absorption Coefficient

~ 0.1%/cm @ 1064 nm

Solubility

insoluble in water

Relative Dielectric Constant

e^T₁₁/e₀: 85, e^T₃₃/e₀: 29.5

Thermal Expansion Coefficients( @ 25^oC)

||a, 2.0 x 10^-6/K, ||c, 2.2 x 10^-6/K

Thermal Conductivity

38 W /m /K @ 25^oC

Transparency Range

420-5200 nm

Optical Homogeneity

~5 x 10^-5 /cm

Sellmeier Equations( λ in um)

n_o² = 4.9048+0.11768/(λ² - 0.04750) - 0.027169λ²
n_e² = 4.5820+0.099169/(λ²- 0.04443) - 0.021950λ²

NLO Coefficients

d₃₃ = 34.4 pm/V
d₃₁ = d₁₅ = 5.95 pm/V
d₂₂ = 3.07 pm/V

Electro-Optic Coefficients

g^T₃₃ = 32 pm/V, g^S₃₃ = 31 pm/V
g^T₃₁ = 10 pm/V, g^S₃₁ = 8.6 pm/V
g^T₂₂ = 6.8 pm/V, g^S₂₂ = 3.4 pm/V

Half-Wave Voltage, DC

Electrical field ||z, light ⊥ z 3.03 KV
Electrical field ||x or y, light || z 4.02 KV

Efficiency NLO Coefficients

d_eff=5.7pm/V or~14.6xd₃₆(KDP) for frequency doubling 1300 nm;
d_eff=5.3pm/V or~13.6xd₃₆(KDP) for OPO pumped at 1300nm;
d_eff=17.6pm/V or~45xd₃₆(KDP) for quasi-phase-matched structure;

Damage Threshold

200 MW/cm²

DELN can provide LiNbO3 products used for many applications, such as E-O modulator, waveguide substrate, frequency doubling, SAW wafer application etc.

Specifications

Dimension Tolerance	±0.1mm
Angle Tolerance	±0.5°
Surface Flatness	<λ/8@633nm
Wavefront Distortion	<λ/4@633nm
Parallelism	<20 arc seconds
Perpendicularity	<5 arc minutes
Surface Quality	20/10 Scratch and Dig
Clear Aperture	>95%
Coating	AR coating Upon customer’s request

Magnesium Oxide Doped Lithium Niobate Crystal

Compared with LiNbO3 crystal, MgO:LiNbO3 crystal exhibits its particular advantages for NCPM frequency doubling (SHG) of Nd:Lasers, mixing (SFG) and optical parametric oscillators (OPOs). MgO:LiNbO3 is also a good crystal for optical parametric oscillators (OPOs) and amplifiers (OPAs), quasi-phase-matched doublers and integrated waveguide.

MgO:LiNbO3 has similar effective nonlinear coefficients to pure LiNbO3, Its Sellmeier equations (for MgO dopant 7 mol%) are:

no2=4.8762+0.11554/(λ2 - 0.04674) - 0.033119λ2

ne2=4.5469+0.094779/(λ2 - 0.04439) - 0.026721λ2

Lithium Tantalate Crystal

LiTaO3 crystal is also widely used as electro-optic modulator, with NLO and E-O properties similar to those of LiNbO3 but higher damage threshold (>500 MW/cm for ns pulsed).

Information

Product Line

WARRANTY

All products are guaranteed to be in specifications in material and workmanship for a period of 12 months after shipment.
We do not assume liability for installation, labor or consequential damages.
This warranty is not suitable for failure of the products due to misuse, abuse, accident, or neglect.

Contacts

Deln Optics
E-mail: [email protected]

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Crystal Structure	Trigonal, space group R3c
Cell Parameters	a = 0.515Å, c = 13.863Å, Z = 6Å
Melting Point	1255±5^oC
Curie Point	1140±5^oC
Mohs Hardness	5
Density	4.64g/cm³
Absorption Coefficient	~ 0.1%/cm @ 1064 nm
Solubility	insoluble in water
Relative Dielectric Constant	e^T₁₁/e₀: 85, e^T₃₃/e₀: 29.5
Thermal Expansion Coefficients( @ 25^oC)	\|\|a, 2.0 x 10^-6/K, \|\|c, 2.2 x 10^-6/K
Thermal Conductivity	38 W /m /K @ 25^oC
Transparency Range	420-5200 nm
Optical Homogeneity	~5 x 10^-5 /cm
Sellmeier Equations( λ in um)	n_o² = 4.9048+0.11768/(λ² - 0.04750) - 0.027169λ² n_e² = 4.5820+0.099169/(λ²- 0.04443) - 0.021950λ²
NLO Coefficients	d₃₃ = 34.4 pm/V d₃₁ = d₁₅ = 5.95 pm/V d₂₂ = 3.07 pm/V
Electro-Optic Coefficients	g^T₃₃ = 32 pm/V, g^S₃₃ = 31 pm/V g^T₃₁ = 10 pm/V, g^S₃₁ = 8.6 pm/V g^T₂₂ = 6.8 pm/V, g^S₂₂ = 3.4 pm/V
Half-Wave Voltage, DC	Electrical field \|\|z, light ⊥ z 3.03 KV Electrical field \|\|x or y, light \|\| z 4.02 KV
Efficiency NLO Coefficients	d_eff=5.7pm/V or~14.6xd₃₆(KDP) for frequency doubling 1300 nm; d_eff=5.3pm/V or~13.6xd₃₆(KDP) for OPO pumped at 1300nm; d_eff=17.6pm/V or~45xd₃₆(KDP) for quasi-phase-matched structure;
Damage Threshold	200 MW/cm²