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Linbo3 Crystal - China

price: check with company for price

LiNbO3 is widely used as electro-optic modulators and Q-switches for Nd:YAG, Nd:YLF and Ti:Sapphire lasers as well as modulators for fiber optics. The following table list the specifications of a typical LiNbO3 crystal used as Q-switch with transverse E-O modulation. The light propagates in z-axis and electric field applies to x-axis. The electro-optic coefficients of LiNbO3 are: r33 = 32 pm/V, r31 = 10 pm/V, r22 = 6.8 pm/V at low frequency and r33 = 31 pm/V, r31= 8.6 pm/V, r22 = 3.4 pm/V at high electric frequency. The half–wave voltage: Vπ=λd/(2no3r22L), r c=(ne/no)3r33-r13.
LiNbO3 Q-Switch Specifications
Size 9 X 9 X 25 mm3 or 4 X 4 X 15 mm3
Other size is available upon request
Tolerance of size Z-axis: ± 0.2 mm
X-axis and Y-axis:±0.1 mm
Chamfer less than 0.5 mm at 45°
Accuracy of orientation Z-axis: <± 5’
X-axis and Y-axis: < ± 10’
Parallelism < 20"
Finish 10/5 scratch/dig
Flatness λ/8 at 633 nm
AR-coating R < 0.2% @ 1064 nm
Electrodes Gold/Chrome plated on X-faces
Wavefront distortion <λ/4 @ 633 nm
Extinction ratio > 400:1 @ 633 nm, φ6 mm beam
LiNbO3 is also a good acousto-optic crystal and used for surface acoustic wave (SAW) wafer and A-O modulators. CASTECH provides acoustic (SAW) grade LiNbO3 crystals in wafers, as-cut boules, finished components and custom fabricated elements.
Typical SAW Properties
Cut Type SAW Velocity
Vs (m/s) Electromechanical Coupling Factor
k2s (%) Temperature Coefficient of Velocity
TCV (10-6/oC) Temperature Coefficient of Delay
TCD (10-6/oC)
127.86o Y-X 3970 5.5 -60 78
Y-X 3485 4.3 -85 95
Typical Specifications
Type 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 0.3-1.0 mm
Flatness (mm) ≤ 15
Bow (mm) ≤ 25


Company Contact:


  • Phone: 15860296796

  • Address: 4/F, 12th Bldg, Taijiang Industrial Park, Juyuanzhou Industrial Zone,Fuzhou, Fujian, China, Fuzhou, Fujian, China

  • Email: Email


Published date: August 11, 2016 -

  • Business Description: Our manufacturing capabilities consist of all types of customized lens, Beam Splitters, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Optical Assemblies and Optical Systems Solutions, Laser Crystals, NLO Crystals. The products are widely used in laser industry, optical communication, laser display, medical equipment, survey equipment, precision Instrument and semiconductor.

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