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Fe:LiNbO3 Crystal

POC-OC-122513-Fe:LiNbO3 Crystal

  • High electro-optic coefficient (r41 = 5 pm/V) for efficient photorefractive applications.
  • Superior phase conjugation efficiency for optical applications.
  • Available in large size elements or wafers up to 3 inches.
  • Grown using the Czochralsky method, ensuring high quality.
  • Customization available for doping levels, coatings, and dimensions.

Customizable Components Available for This Material to Meet Your Specific Needs!

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General Description

Fe:LiNbO₃ crystals (Iron-doped Lithium Niobate) are renowned for their exceptional photorefractive properties, making them ideal for optical and photonic applications. Doping with Fe enhances their photorefractive sensitivity and diffraction efficiency. Their high electro-optic coefficients, combined with excellent chemo-mechanical properties, enable versatile use in various fields, including telecommunications and holography. Fe:LiNbO₃ is easy to handle, cost-effective, and suitable for high-volume production, making it a preferred choice for industrial and research applications.

These crystals are grown by the Czochralsky method, ensuring high structural uniformity and purity. With the ability to customize doping levels and physical dimensions, Fe:LiNbO₃ crystals can meet the specific demands of advanced optical systems.

General Applications and Examples

Fe:LiNbO₃ crystals are extensively used in:

  • Spatial Light Modulators (SLMs): Applications in optical displays and adaptive optics systems.
  • Optical Switches: For high-speed data transmission in telecommunications.
  • Holographic Recording: Fe:LiNbO3 Crystal Ideal for high-density optical data storage.
  • Optical Waveguides: Integrated photonics for light manipulation and signal processing.

These applications leverage the crystal’s high phase conjugation efficiency and electro-optic coefficients, ensuring minimal signal distortion and energy loss in photonic devices. Additionally,Fe:LiNbO3 Crystal wide range of doping levels and customizable sizes enhance its utility in both research and commercial domains.

Chemical and Structural Properties

PropertySpecification
Chemical FormulaFe:LiNbO₃
Crystal StructureTrigonal, 3m
Density4.64 g/cm³
Mohs Hardness5
Transmission Range0.35–5.5 μm
Refractive Index @0.63 μmne = 2.29, no = 2.22
Electro-optic Coefficientsr33 = 32 pm/V, r22 = 6 pm/V
Dielectric Constantε1 = 85, ε3 = 30

Optical Properties

Optical PropertySpecification
Transparency Range0.35–5.5 μm
Refractive Indexne = 2.29, no = 2.22
Electro-optic Coefficientr41 = 5 pm/V
Phase MatchingSupports wide-angle matching

Standard Fabrication Specifications

SpecificationTolerance
Clear Aperture≥ 85%
Thickness Tolerance±0.2 mm
Surface Flatness<λ/4 @632.8 nm
Parallelism Error<3 arcmin
Face Dimensions Tolerance±0.2 mm

Coating Specification

  • Available Coatings: Antireflective or indium tin oxide coatings upon request.
  • Standard Coatings: None (crystals are supplied uncoated
  • Adhesion Test: Compliant with MIL-C-675C military standards, an adhesion test involved applying a tape that meets LT-90 specifications onto the lens film layer. The tape was affixed fully and then removed vertically. This procedure was performed three times, resulting in no blistering or peeling.
  • Temperature Test: In line with MIL-C-675C specifications, test pieces were subjected to temperatures of -62±1℃ and 71±1℃. After maintaining them at room temperature (16℃~32℃) for two hours, the adhesion test was repeated, confirming no film detachment.
  • Abrasion Resistance Test: Conforming to MIL-C-675C and CCC-C-440 standards, the abrasion resistance test involved a gauze tester applying a minimum force of 1.0 lbs (0.45 kg) to the film. This was repeated 25 times with gauze widths of 1/4 inch (6.4mm) and 3/8 inch (9.5mm), ensuring no damage occurred to the film surface.
  • Humidity Test: Under MIL-C-675C criteria, the test piece was placed in a controlled temperature and humidity chamber set to 49 ±2℃ and 95%~100% humidity for 24 hours. The film remained intact, with no peeling, scratches, or other defects.
  • Solvent and Cleaning Testing: Following MIL-C-675C specifications, test pieces were exposed to room temperature conditions (16℃~32℃) and tested with acetone and alcohol for at least 10 minutes each. After air drying and subsequent cleaning with a cotton cloth soaked in alcohol, the film surface showed no signs of peeling or scratches.
  • Salt Spray Test: After 100 hours in a 35°C environment with a 5% saltwater concentration, the film showed no signs of damage.
Face DimensionsLengthDoping (Fe₂O₃)SKUPrice (USD)
10 × 10 mm1 mm0.02%7006Request
10 × 10 mm5 mm0.02%6457Request
20 × 20 mm1 mm0.02%7010Request

POC-OC-122513-Fe LiNbO3 Crystal

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