1. Key Features of Terahertz Crystals
- Wide transparency ranges optimized for terahertz applications.
- High nonlinear coefficients for efficient terahertz wave generation.
- Customizable doping and dimensions to meet diverse requirements.
- Excellent mechanical and thermal stability under operational conditions.
- Advanced coatings available for enhanced optical performance.
2. Material General Description
Terahertz crystals, processed by Photonics On Crystals, are engineered to support the generation and manipulation of terahertz waves. These materials, including LiNbO₃, ZnTe, GaSe, and others, exhibit unique nonlinear optical properties and broad transparency ranges. Known for their high efficiency in frequency conversion and their ability to withstand high power levels, terahertz crystals are indispensable for cutting-edge applications in spectroscopy, imaging, and telecommunications.
POC provides tailored solutions, including doping options like MgO or Fe, and supports crystal dimensions up to 60 mm × 60 mm. Each crystal undergoes precise fabrication and can be coated with anti-reflection (AR) layers to optimize performance.
3. General Applications
- Spectroscopy: For time-domain and frequency-domain terahertz spectroscopy.
- Imaging Systems: Used in medical, industrial, and security imaging applications.
- Telecommunications: Enhancing high-speed, next-generation communication systems.
- Material Analysis: Suitable for non-invasive analysis and characterization of materials.
- Scientific Research: Utilized in advanced research on quantum phenomena and photonics.
4. Comparison of Crystal Properties
| Crystal | Transparency Range (µm) | Refractive Index | Nonlinear Coefficients (pm/V) | Mechanical Properties |
| LiNbO₃ | 0.4–5.5 | no = 2.286, ne = 2.203 | d33 = 27.2 | Hardness: 5.0–5.5 |
| ZnTe | 0.5–20 | ~2.7 | d14 = 60 | Brittle, density: 6.34 g/cm³ |
| GaSe | 0.65–18 | ~2.6 | d22 = 54 | Layered structure, soft |
| SBN | 0.4–2.6 | ~2.3 | High ferroelectricity | High photorefractive gain |
5. Standard Fabrication Specifications
| Specification | Details |
| Maximum Dimensions | Up to 60 mm × 60 mm |
| Surface Flatness | λ/8 @ 632.8 nm |
| Parallelism Error | < 30 arc seconds |
| Surface Quality | 40-20 S-D |
| Coating Options | Custom AR coatings for specific wavelengths |
6. POC Strength and Capabilities
Photonics On Crystals specializes in advanced crystal processing and customization. Key strengths include:
- Expertise in tailoring dimensions, doping, and surface finishes.
- Precision fabrication for superior optical and mechanical properties.
- Advanced coating technologies to optimize crystal performance.
- Capability to process bulk crystal orders and meet unique project specifications.
For inquiries or customized solutions, please contact POC at [email protected] or visit www.poc.com.sg.