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ANHUI CRYSTRO CRYSTAL MATERIALS Co., Ltd.
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SAW Grade Acousto Optic Lithium Niobate LiNbO3 Wafer

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SAW Grade Acousto Optic Lithium Niobate LiNbO3 Wafer

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Brand Name : Crystro

Model Number : CR21011-05

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 : 4-5 weeks

Packaging Details : Transparent clean box

Item : SAW Grade LiNbO3 Crystal

Melting Point : 1253℃

Crystal Sturucture : Trigonal, Space group R3c, Point group 3m

Density : 4.64g/cm3

Transparency Range : 420-5200nm

Absorption Coefficient : ~0.1%/cm @1064nm

Refractive Indices : ne=2.156, no=2.232@1064nm

Origin : China

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SAW Grade LiNbO3 Crystal

LiNbO3 crystal combines low cost, good mechanical and physical properties as well as high optical homogeneity. Therefore, LiNbO3 wedges have been widely used in fiber isolators and circulators.

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.

Anhui Crystro participate in the kinds exhibitions every year: Laser World of Photonics Munich, Shanghai, Photonics West in San Francisco, CIOE in Shenzhen, etc.

Crystro provides:

  • LiNbO3 wedges used for fiber optical isolators and circulators.
  • Reliable delivery
  • Strict quality control
  • Technical support
  • Very competitive prices

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

Crystro can offer other size and specification of wafers upon request.

Crystal Structure Trigonal, Space group R3C, Point group 3m
Cell Parameters a=5.148 Å , c=13.863 Å
Melting Point 1253oC
Curie Temperature 1140oC
Mohs Hardness 5
Density: 4.64 g/cm3
Deliquescence None
Optical Homogeneity ~ 5x10-5 /cm
Transparency Range 420 -- 5200 nm
Absorption Coefficient ~0.1%/cm @ 1064 nm
Refractive indices at 1064nm
(Pure LN)		 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
Thermal Expansion Coefficient
(@ 25oC)		 //a, 2.0x10-6/K
//c, 16.7x10-6/K
Thermal Conductivity Coefficient: 38 W/m/K at 250 oC
Thermal Optical Coefficient dno/dT=-0.874x10-6/K at 1.4 µm
dne/dT=39.073x10-6/K at 1.4 µm
The Sellmeier equations (Pure LN))
(λ in µm)		 no2 = 4.9048+0.11768/(λ2-0.04750)-0.027169λ2
ne2 = 4.5820+0.099169/(λ2-0.04443)-0.021950λ2

SAW Grade Acousto Optic Lithium Niobate LiNbO3 Wafer


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