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HRFZ-Si THz Lens
Terahertz silicon hemispherical lenses are a type of lens used in the terahertz band. These hemispherical lenses are made of silicon and are used to focus, refract, or modulate the direction of propagation of terahertz waves. Terahertz (THz) waves are electromagnetic waves with frequencies of ~0.1-10 THz (~3 mm - 30 μm, 3 cm-1 - 300 cm-1), between the microwave and mid-infrared regions. For conventional THz applications, we use High Resistivity Float Zone Silicon (HRFZ-Si) material to make silicon hemispherical or super-hemispherical lenses because of its excellent transmittance in the THz band.
In terahertz devices, through advanced silicon fabrication techniques, terahertz silicon hemispherical lenses transmit terahertz radiation efficiently, act as light collectors and modulators of light propagation, help to collimate and focus terahertz beams, and ensure that signal strength loss is minimized. Applications include wireless communications, imaging technology and security detection.
Common specification >
Type >
Accuracy Class >
Application Note >
| Material | HRFZ-Si |
| Available Diameters | 8-80mm |
| Clear Aperture | ＞=90% |
| Surface Quality | 60-40 |
| Surface Accuracy | +/-0.01mm deviation from ideal sphere and plane |
| Accuracy Class | Diameter Tolerance(mm) | Radius Tolerance(mm) | Thickness Tolerance(mm) |
| Class 1 | ±0.1mm | ±0.05mm | ±0.05mm |
| Class 2 | ±0.2mm | ±0.1mm | ±0.1mm |
| Class 3 | ±0.2mm | ±0.1mm | ±0.2mm |
The application of the terahertz silicon hemispherical lenses is mainly in the modulation and detection of terahertz waves.
Terahertz waves are located between microwave and infrared radiation in the electromagnetic spectrum, and have unique properties such as strong penetration, high security, and extremely wide transient bandwidth, and are therefore widely used in imaging, national defense and security, biological sample detection, and wireless communication. In these applications, terahertz modulators are used to modulate the electromagnetic properties of terahertz waves, such as phase, amplitude, and polarization state.
Silicon is widely used in terahertz modulators as a common substrate material for terahertz bands. However, the silicon substrate's own weak light absorption makes it difficult to obtain a high modulation depth, which limits the performance of silicon substrate terahertz modulators. Nevertheless, the application of silicon hemispheres is still important, especially in improving the efficiency of terahertz wave generation and detection.
In summary, although silicon substrate terahertz modulators face some technical challenges, the terahertz silicon hemisphere lenses plays an important role in improving the efficiency of terahertz wave generation and detection, as well as having promising applications in designing terahertz photonic crystals and metamaterials.
Another application for terahertz silicon lenses is the highly sensitive detection of trace gases, thickness measurements, and real-time inspection of samples on fast-moving conveyor belts.
Terahertz technology, due to its unique optical and electrical properties, has shown promising applications in several fields. Particularly in the highly sensitive detection of trace gases, terahertz technology can provide high spectral resolution, making frequency domain spectrometers ideal. In the field of layer thickness measurements, terahertz technology offers non-contact measurements by means of time-domain systems, e.g., extrusion of plastic parts and characterization of paint finishes in the automotive industry. In addition, for real-time inspection of samples on fast-moving conveyor belts, terahertz technology is capable of measuring samples up to 500 KSPS per second, ensuring accuracy and efficiency in real-time inspection.
Terahertz silicon lenses, as an important component of terahertz technology, enable the collimation and focusing of terahertz beams. These lenses not only improve the performance of terahertz systems but also broaden the range of applications of terahertz technology. For example, the use of terahertz silicon lenses enables higher precision trace gas detection, more accurate layer thickness measurement, and real-time product quality control on high-speed production lines.
Please contact us for discount pricing for stock parts over 10+ and volume/OEM quantities
| Type No. | Data sheet | Type | Accuracy Class | Diameter (mm) | Radius | Thickness (mm) | Unit Price (USD) | |
|---|---|---|---|---|---|---|---|---|
| CLZ-HEM-04-200 | PDF > | Type-B | Class 1 | 4.00 | 2.00 | 2.00 | $100.00 | |
| CLZ-Hyper-12-740 | PDF > | Type-C | Class 2 | 12.00 | 6.00 | 7.40 | $200.00 | |
| CLZ-Hyper-10-650 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 6.50 | $150.00 | |
| CLZ-Hyper-10-625 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 6.25 | $150.00 | |
| CLZ-HEM-10-500 | PDF > | Type-B | Class 2 | 10.00 | 5.00 | 5.00 | $100.00 | |
| CLZ-HEM-25-1250 | PDF > | Type-B | Class 2 | 25.00 | 12.50 | 12.50 | $300.00 | |
| CLZ-Hyper-12-700 | PDF > | Type-C | Class 2 | 12.00 | 6.00 | 7.00 | $200.00 | |
| CLZ-HEM-12-600 | PDF > | Type-B | Class 3 | 12.00 | 6.00 | 6.00 | $150.00 | |
| CLZ-Hyper-10-640 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 6.40 | $200.00 | |
| CLZ-Hyper-10-617 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 6.17 | $150.00 | |
| CLZ-Hyper-10-610 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 6.10 | $150.00 | |
| CLZ-Hyper-10-607 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 6.07 | $150.00 | |
| CLZ-Hyper-10-605 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 6.05 | $150.00 | |
| CLZ-Hyper-10-600 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 6.00 | $150.00 | |
| CLZ-Hyper-10-585 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 5.85 | $150.00 | |
| CLZ-Hyper-10-577 | PDF > | Type-C | Class 1 | 10.00 | 5.00 | 5.77 | $150.00 |
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