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 Class Diameter(mm) Radius(mm) Thickness(mm) CLZ-HEM-04-200 Class 1 4 2 2 CLZ-HEM-10-500 Class 2 10 5 5 CLZ-HEM-12-600 Class 3 12 6 6 CLZ-HEM-25-1250 Class 2 25 12.5 12.5
Hyper-Hemispherical SI Lens
Type No. Accuracy Class Diameter(mm) Radius(mm) Thickness(mm) Hyper-05-2775 Class 1 5 2.5 2.775 Hyper-10-577 Class 1 10 5 5.77 Hyper-10-585 Class 1 10 5 5.85 Hyper-10-600 Class 1 10 5 6.00 Hyper-10-605 Class 1 10 5 6.05 Hyper-10-607 Class 1 10 5 6.07 Hyper-10-610 Class 1 10 5 6.10 Hyper-10-617 Class 1 10 5 6.17 Hyper-10-625 Class 1 10 5 6.25 Hyper-10-640 Class 1 10 5 6.40 Hyper-10-650 Class 1 10 5 6.50 Hyper-12-700 Class 2 12 6 7.00 Hyper-12-740 Class 2 12 6 7.40
