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ZnTe Crystal

POC-OC-122511-ZnTe Crystal

  • High applicability for THz wave generation, detection, and optical limiters.
  • Exceptional purity levels ranging from 99.995% to 99.999%.
  • Maximum aperture size of 30 mm × 30 mm and minimum thickness of 0.01 mm.
  • High-quality ZnTe crystals with [100] and [111] crystal orientations available.
  • Outstanding electro-optic coefficient (y41 = 4.0 pm/V) for advanced applications.

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

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General Description

Zinc Telluride (ZnTe) is a direct-bandgap II-VI compound semiconductor material with a cubic zinc blende crystal structure. It is an ideal electro-optic crystal widely utilized in terahertz (THz) wave generation and detection due to its exceptional optical and electronic properties. With a wide range of applications, ZnTe crystals boast high transmission efficiency in the mid-infrared (7-12 μm) and visible spectrum.

The crystal’s intrinsic qualities include a high electro-optic coefficient, moderate birefringence, and excellent purity levels that contribute to its performance in high-power and ultrafast laser systems. Its compact lattice structure ensures low defect density, making it a reliable choice for industrial-grade THz imaging and spectroscopy applications. Furthermore, ZnTe’s ability to support ultra-thin and large-area production makes it a versatile option for demanding optical setups.

General Applications and Examples

ZnTe crystals are extensively utilized in a variety of high-performance optical and electronic fields:

  • Terahertz Wave Generation and Detection: ZnTe serves as a critical nonlinear optical material for efficient THz wave production via optical rectification and its detection using electro-optic sampling.
  • Electro-Optic Devices: With its high electro-optic coefficient, ZnTe is integrated into modulators and other advanced photonics applications.
  • Optical Limiters and Detectors: ZnTe demonstrates exceptional transmission properties, making it valuable for optical limiters and mid-infrared detectors.
  • Spectroscopy and Imaging: Widely employed in THz spectroscopy and imaging systems, ZnTe enables the precise identification of materials and structures due to its excellent bandwidth capabilities.

Chemical and Structural Properties

PropertyValue
Crystal StructureCubic Zinc Blende
Lattice Constanta = 6.1034 nm
Density5.633 g/cm³
Bandgap2.26 eV
Transparency Range7-12 μm
Transmission Efficiency60% (7-12 μm)
Refractive Indexn (λ=10.6 μm) = 2.7
Electro-Optic Coefficienty41 = 4.0 pm/V
Electrical ResistivityLow: <10³ Ω·cm, High: >10⁹ Ω·cm

Optical Properties

Wavelength (λ)Refractive Index (n)Transparency (%)Electro-Optic Efficiency
7 μm2.860%High
10.6 μm2.755%High
12 μm2.650%Moderate

Standard Fabrication Specifications

SpecificationParameter
Aperture SizeUp to 30 × 30 mm
Minimum Thickness0.01 mm
Crystal Orientation[100] or [111]
Surface Flatness<λ/10
Surface RoughnessRa < 0.01 nm

Coating Specification

ZnTe Crystals are typically delivered uncoated to preserve their surface integrity. Anti-reflective coatings are available upon request depending on application-specific requirements.

POC-ZnTe Crystal Spectrum Transmission Curve
  • 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.
Clear ApertureThicknessOrientationCoatingPrice (USD)Customization Available
30 × 30 mm0.5 mm[100]Uncoated$2,500Yes
20 × 20 mm1.0 mm[111]Uncoated$2,000Yes
15 × 15 mm2.0 mm[100]Uncoated$1,500Yes

POC-OC-122511-ZnTe Crystal

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