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LiNbO3 -LN ( Lithium Niobate)
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LiNbO3 -LN ( Lithium Niobate)

LiNbO3 Crystal is widely used as frequency doublers for wavelength ˃ 1µm and optical parametric oscillators (OPOs) pumped at 1064 nm as well as quasi-phase-matched (QPM) devives.
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Introduction

Lithium Niobate (LiNbO3 or LN) is widely used as frequency doublers for wavelength ˃ 1µm, optical parametric oscillators (OPOs) pumped at 1064 nm as well as quasi-phase-matched (QPM) devices. Additionally due to its large Electro-Optic (E-O) and Acousto-Optic (A-O) coefficients, LiNbO3 crystal is the most commonly used material for Pockel cells, Q-switches and phase modulators, waveguide substrates, and surface acoustic wave (SAW) wafers, etc. CASTECH can provide LiNO3 crystals with high quality and large size for all these applications.

 

CASTECH provides

  • 50,000 to 100,000 pcs/month of LiNbO3 wedges used for fiber optical isolators and circulators
  • Strict quality control
  • Technical support
  • Fast delivery
  • Competitive price

 

 Basic Properties

Table 1. Chemical and Physical Properties

Crystal Structure

Trigonal, Space group R3c, Point group 3m

Lattice Parameter

a = 5.148 Å, c = 13.863 Å

Melting Point

1253℃

Curie Temperature

1140℃

Mohs Hardness

5 Mohs

Density

4.64 g/cm3

Elastic Stiffness Coefficients

CE11 = 2.33 ( × 1011 N/m2)

CE33 = 2.77 ( × 1011 N/m2)

 

     

Table 2. Optical and Nonlinear Optical Properties

Transparency Range

420-5200 nm

Optical Homogeneity

~5 ×10-5 /cm

Refractive Indices

ne = 2.146, no = 2.220 @1300 nm

ne = 2.156, no = 2.232 @1064 nm

ne = 2.203, no = 2.286 @632.8 nm

NLO Coefficients

d33 = 86 × d36 (KDP) = 37.84 pm/V

 d31 = 11.6 × d36 (KDP) = 5.10 pm/V

d22 = 5.6 × d36 (KDP) = 2.46 pm/V

Effective NLO Coefficients

deff (I) = d31sinθ - d22cosθsin3Φ

deff (II) = d22cos2θ cos3Φ

Sellmeier Equations (λ in μm)

no= 4.9048 + 0.11768 / (λ2 - 0.04750) - 0.027169 λ2

ne= 4.5820 + 0.099169 /(λ- 0.04443) - 0.02195 λ2

Damage Threshold

100 MW/cm2 (10 ns, 1064 nm)

      

 

Table 3. Thermal and Electrical Properties of LiNbO3

Thermal Conductivity

38 W/m/K @25 ℃

Thermal Expansion Coefficients (at 25℃)

//a, 2.0 × 10-6 /K

//c, 2.2 × 10-6 /K

Resistivity

2×10-6 Ω·cm @200 ℃

Dielectric Constants

εS110 = 43, εT110 = 78

εS330 = 28, εT330 = 32

Piezoelectric Strain Constant

D22 = 2.04 × 10-11 C/N 

D33 = 19.22 × 10-11 C/N

Electro-Optic Coefficients

γT33 = 32 pm/V, γS33 = 31 pm/V, 

γT31 = 10 pm/V, γS31 = 8.6 pm/V,

γT22 = 6.8 pm/V, γS22 = 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

 

Table 4. Specifications

Dimension Tolerance

(W ± 0.1 mm) × (H ± 0.1mm) × (L ± 0.2mm)

Clear Aperture 

Central 90% of the diameter

Surface Quality (Scratch/Dig)

20/10 to MIL-PRF-13830B

Flatness

 λ/8 @633 nm

Transmitted Wavefront Distortion

≦λ/4 @633 nm

Parallelism

20 arc sec

Perpendicularity

≦15 arc min

Angle Tolerance

≦±0.5°

Quality Warranty Period

One year under proper use

AR-coatings

CASTECH provides the following AR-coatings:

  • Dual Band AR-coating (DBAR) at 1064/532 nm on both surface, with low reflectance (R<0.2% @1064 nm and R<0.5% @532 nm)
  • AR-coating and gold/chrome plated on side faces for E-O applications
  • Other coatings are available upon request
Keyword:
Nonlinear crystal
LiNbO3
LN
acousto-optic coefficient
quasi-phase-matched
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LiNbO3 -LN ( Lithium Niobate)
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  • LiNbO3 -LN ( Lithium Niobate)

  • LiNbO3 Crystal is widely used as frequency doublers for wavelength ˃ 1µm and optical parametric oscillators (OPOs) pumped at 1064 nm as well as quasi-phase-matched (QPM) devives.
Description
Cas'Tech Class
Parameters
Download

Introduction

Lithium Niobate (LiNbO3 or LN) is widely used as frequency doublers for wavelength ˃ 1µm, optical parametric oscillators (OPOs) pumped at 1064 nm as well as quasi-phase-matched (QPM) devices. Additionally due to its large Electro-Optic (E-O) and Acousto-Optic (A-O) coefficients, LiNbO3 crystal is the most commonly used material for Pockel cells, Q-switches and phase modulators, waveguide substrates, and surface acoustic wave (SAW) wafers, etc. CASTECH can provide LiNO3 crystals with high quality and large size for all these applications.

 

CASTECH provides

  • 50,000 to 100,000 pcs/month of LiNbO3 wedges used for fiber optical isolators and circulators
  • Strict quality control
  • Technical support
  • Fast delivery
  • Competitive price

 

 Basic Properties

Table 1. Chemical and Physical Properties

Crystal Structure

Trigonal, Space group R3c, Point group 3m

Lattice Parameter

a = 5.148 Å, c = 13.863 Å

Melting Point

1253℃

Curie Temperature

1140℃

Mohs Hardness

5 Mohs

Density

4.64 g/cm3

Elastic Stiffness Coefficients

CE11 = 2.33 ( × 1011 N/m2)

CE33 = 2.77 ( × 1011 N/m2)

 

     

Table 2. Optical and Nonlinear Optical Properties

Transparency Range

420-5200 nm

Optical Homogeneity

~5 ×10-5 /cm

Refractive Indices

ne = 2.146, no = 2.220 @1300 nm

ne = 2.156, no = 2.232 @1064 nm

ne = 2.203, no = 2.286 @632.8 nm

NLO Coefficients

d33 = 86 × d36 (KDP) = 37.84 pm/V

 d31 = 11.6 × d36 (KDP) = 5.10 pm/V

d22 = 5.6 × d36 (KDP) = 2.46 pm/V

Effective NLO Coefficients

deff (I) = d31sinθ - d22cosθsin3Φ

deff (II) = d22cos2θ cos3Φ

Sellmeier Equations (λ in μm)

no= 4.9048 + 0.11768 / (λ2 - 0.04750) - 0.027169 λ2

ne= 4.5820 + 0.099169 /(λ- 0.04443) - 0.02195 λ2

Damage Threshold

100 MW/cm2 (10 ns, 1064 nm)

      

 

Table 3. Thermal and Electrical Properties of LiNbO3

Thermal Conductivity

38 W/m/K @25 ℃

Thermal Expansion Coefficients (at 25℃)

//a, 2.0 × 10-6 /K

//c, 2.2 × 10-6 /K

Resistivity

2×10-6 Ω·cm @200 ℃

Dielectric Constants

εS110 = 43, εT110 = 78

εS330 = 28, εT330 = 32

Piezoelectric Strain Constant

D22 = 2.04 × 10-11 C/N 

D33 = 19.22 × 10-11 C/N

Electro-Optic Coefficients

γT33 = 32 pm/V, γS33 = 31 pm/V, 

γT31 = 10 pm/V, γS31 = 8.6 pm/V,

γT22 = 6.8 pm/V, γS22 = 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

 

Table 4. Specifications

Dimension Tolerance

(W ± 0.1 mm) × (H ± 0.1mm) × (L ± 0.2mm)

Clear Aperture 

Central 90% of the diameter

Surface Quality (Scratch/Dig)

20/10 to MIL-PRF-13830B

Flatness

 λ/8 @633 nm

Transmitted Wavefront Distortion

≦λ/4 @633 nm

Parallelism

20 arc sec

Perpendicularity

≦15 arc min

Angle Tolerance

≦±0.5°

Quality Warranty Period

One year under proper use

AR-coatings

CASTECH provides the following AR-coatings:

  • Dual Band AR-coating (DBAR) at 1064/532 nm on both surface, with low reflectance (R<0.2% @1064 nm and R<0.5% @532 nm)
  • AR-coating and gold/chrome plated on side faces for E-O applications
  • Other coatings are available upon request

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