Key Features
- Wide transmission range: 0.62 – 20 µm
- High nonlinear optical coefficient: d₁₄ = 54 pm/V
- High refractive index: n = 2.7 at 10.6 µm
- High optical damage threshold
- Excellent electro-optic properties
Description
Zinc Telluride (ZnTe) is a high-performance II-VI compound semiconductor material known for its exceptional nonlinear optical properties and wide transmission range. ZnTe crystals are widely used in terahertz (THz) wave generation and detection, mid-infrared (mid-IR) applications, and as optical isolators. With a high nonlinear optical coefficient and a broad transparency range, ZnTe is an excellent choice for a variety of advanced optical applications.
Physical Properties
- Crystal Structure: Hexagonal
- Lattice Constants: a = 6.1034 Å, c = 15.89 Å
- Density: 5.63 g/cm³
- Melting Point: 1238°C
- Hardness: Mohs scale 5
Optical Properties
- Transmission Range: 0.62 – 20 µm
- Refractive Index: nₓ = 2.7233, nᵧ = 2.6975, n_z = 2.3745 @ 10.6 µm
- Nonlinear Optical Coefficient: d₁₄ = 54 pm/V
- Bandgap Energy: 2.26 eV @ 300K
Standard Specifications
- Surface Quality: 10-5 scratch & dig (MIL-PRF-13830B)
- Flatness: λ/4 @ 633 nm
- Parallelism: < 10 arcsec
- Perpendicularity: < 5 arcmin
- Clear Aperture: > 90% of full aperture
- Diameter Tolerance: +0.0 / -0.1 mm
- Thickness Tolerance: ± 0.1 mm
- Coating Options: AR/HR coatings available upon request
Other Properties
- Thermal Conductivity: 43 W/m·K @ 25°C
- Thermal Expansion Coefficient: 6.8 x 10⁻⁶ /K
- Electrical Resistivity: 4.0 Ω·cm
Applications
- THz Wave Generation and Detection: ZnTe is highly effective in generating and detecting THz radiation, making it a crucial component in spectroscopy and imaging systems.
- Mid-IR Laser Systems: ZnTe’s broad transparency range and high nonlinear coefficient make it ideal for use in mid-IR laser systems and frequency conversion processes.
- Nonlinear Optical Applications: Its high nonlinear coefficient facilitates efficient frequency mixing, parametric oscillation, and sum frequency generation.
- Optical Isolators: Used in laser systems to prevent back reflections and ensure stable operation.
Processing and Handling
ZnTe crystals require careful handling to maintain their surface quality and performance. Proper cleaning and storage are essential to avoid contamination and damage. Standard AR coatings can enhance performance and protect the crystal surfaces.
Why Choose Shape Optics
Shape Optics is dedicated to providing high-quality ZnTe crystals with precise control over their physical and optical properties. Our crystals are produced with the highest standards and undergo rigorous quality control to ensure superior performance.
Shape Optics Strength and Capabilities
- High-Quality Materials: Utilizing the finest raw materials and advanced manufacturing processes.
- Custom Solutions: Offering tailored solutions to meet specific application requirements.
- Global Reach: Supplying high-quality crystals to clients worldwide.
- Expert Support: Providing comprehensive technical support from our experienced team.
By choosing Shape Optics, you are assured of premium products backed by exceptional service and support, ensuring optimal performance for your applications.