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ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.
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Lithium Niobate LiNbO3 Piezoelectric Effect Crystals Negative Uniaxial

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Lithium Niobate LiNbO3 Piezoelectric Effect Crystals Negative Uniaxial

Brand Name : Crystro

Model Number : CR210.205-1

Certification : SGS/COC

Place of Origin : China

MOQ : 1pc

Price : USD 20~200/pc

Payment Terms : T/T, Western Union, MoneyGram, Paypal

Supply Ability : 2000pcs per month

Delivery Time : 1-4 weeks

Packaging Details : Transparent clean box

Material : Lithium niobate LiNbO3 LN single crystal substrate for Pyroelectric

Dimension Tolerance : ±0.05mm

Optical Axis Orientation : ±0.5°

Flatness : λ/4 @632.8nm

Surface Quality : 20/10

AR-Coating : R＜0.2% @1550nm±40nm

Thickness : 0.5mm/1mm

Delivery : 1-4 weeks

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Lithium niobate LiNbO3 LN single crystal substrate for Pyroelectric

LiNbO3 (Lithium niobate, LN) crystal is a negative uniaxial crystal and one of the most thoroughly characterized optical materials. With its wide transparency range in the visible and mid-infradred and the excellent chemical and mechanical stability, LN crystal can be used as a bifrengent material for applications in infrared.

With its large electro-optic coefficients, wide optical transparency window, and availability of high optical quality crystals, LN (lithium niobate) crystal is often the material of choice for optical modulation and Q-switch at near-infrared and infrared wavelengths. For electro-optic modulators (EOM) the crystal can be z-cut with zero residual birefringence along the direction of light propagation or x-cut with non-zero residual birefringence and the maximized effective electro-optic coefficient. For Q-switch the crystal is typically z-cut with zero residual birefringence and an electric field is applied transverse to the direction of light propagation. The piezoelectric ringing in LN is a disadvantage at high repetition frequency, but can be overcome to some extent with proper piezoelectrically damped designs.

Crystro provides:


LiNbO3 is also a good acousto-optic crystal and used for surface acoustic wave (SAW) wafer and A-O modulators. Crystro provides acoustic (SAW) grade LiNbO3 crystals in wafers, as-cut boules, finished components and custom fabricated elements.

  • Reliable delivery
  • Strict quality control
  • Technical support
  • Very competitive prices

Basic Properties of LiNbO3:

Crystal Sturucture Trigonal, Space group R3c, Point group 3m
Melting Point 1253℃
Mohs Hardness 5
Density 4.64g/cm3
Deliquescence None
Optical Homogeneity ~5x10-5/cm
Transparency Range 420-5200nm
Absorption Coefficient ~0.1%/cm @1064nm
Refractive Indices at 1064nm ne=2.146, no=2.220@1300nm ne=2.156, no=2.232@1064nm ne=2.203, no=2.286@632.8nm
Thermal Expansion Coefficients (at 25℃ ) //a,2.0x10-6/K //a,2.2x10-6/K
Thermal Conductivity Coefficients 38 W/m/K at 25℃
Thermal Optical Coefficients dno/dT=-0.874 x 10-6/K at 1.4μm dne/dT=39.073 x 10-6/K at 1.4μm
The Sellmeier Equations (λ in μm) no2=4.9048+0.11768/(λ2-0.04750)-0.027169λ2 ne2=4.5820+0.099169/(λ2-0.04443)-0.02195λ2

Typical SAW Properties

Cut Type SAW Velocity Vs (m/s) Electromechanical Coupling Factor K2s(%) Temperature Coefficient of Velocity TCV (10-6/℃) Temperature Coefficient of Delay TCD (10-6/℃)
127.86 ° Y-X 3970 5.5 -60 78
Y-X 3485 4.3 -85 95

Typical Specifications

Specifications Boule Wafer
Diameter Φ3'' Φ4'' Φ3'' Φ4''
Length or Thickness (mm) ≤100 ≤50 0.35-0.5
Orientation 127.86°Y,64°Y,135°Y,X,Y,Z, and other cut
Ref.Flat Orientation X,Y
Ref.Flat Length 22±2mm 32±2mm 22±2mm 32±2mm
Front Side polishing / Mirror polished 5-15 Å
Back Side Lapping / 0.3-1.0μm
Flatness (μm) / ≤15
Bow (μm) / ≤25

Lithium Niobate LiNbO3 Piezoelectric Effect Crystals Negative Uniaxial


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