High Resistance Silicon Optics for THz Applications
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.
Specifictations
| Material | High resistance |
| Resistance | >10㏀*cm |
| Dimension tolerance | ±0.1mm Class1 ±0.2mm Class2 |
| Thickness tolerance | ±0.05mm Class1 ±0.1mm Class2 ± 0.2mm Class3 |
| Reflective index | 3.14 @0.2~4THz |
We offer hyper-/hypo-/hemi-spheres/bullet/plano-convex lenses with diameter from 4mm, up to 100mm
Hemispherical SI Lens
Type No.Accuracy ClassDiameter(mm)Radius(mm)Thickness(mm)CLZ-HEM-04-200Class 1422CLZ-HEM-10-500Class 21055CLZ-HEM-12-600Class 31266CLZ-HEM-25-1250Class 22512.512.5
Hyper-Hemispherical SI Lens
Type No.Accuracy ClassDiameter(mm)Radius(mm)Thickness(mm)Hyper-05-2775Class 152.52.775Hyper-10-577Class 11055.77Hyper-10-585Class 11055.85Hyper-10-600Class 11056.00Hyper-10-605Class 11056.05Hyper-10-607Class 11056.07Hyper-10-610Class 11056.10Hyper-10-617Class 11056.17Hyper-10-625Class 11056.25Hyper-10-640Class 11056.40Hyper-10-650Class 11056.50Hyper-12-700Class 21267.00Hyper-12-740Class 21267.40
- Golay Cell
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