Products Home / Optical Elements / Optical Lenses / Spherical Singlet Lenses / Plano-Convex Spherical Lenses / Hyper-Hemispherical HRFZ-Si THz LensHyper-Hemispherical HRFZ-Si THz Lens
- High Resistivity Float Zone Silicon (HRFZ-Si)
- Design Wavelength: 300 μm (1 THz)
- Designed for Use with a THz Antenna with a 600 μm Thick Substrate
HSL12
Hyper-Hemispherical HRFZ-Si Lens for THz Radiation
HSL12 Si Lens Shown as an Integrated Component of the PCA800 THz Antenna (Not to Scale)
THz Output
HSL12 Hyper-Hemispherical Si Lens
Antenna
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| Specifications | ||
|---|---|---|
| Material | Undoped HRFZ-Si | |
| Specific Resistance | >10 kΩ*cm | |
| Index of Refraction at 1 THz | 3.41 | |
| Clear Aperture | >90% of Diameter | |
| Surface Quality | 80-50 Scratch-Dig | |
| Radius of Curvature | 6.0 mm | |
| Thickness | 7.1 mm | |
| Thickness Tolerance | ±0.1 mm | |
Features
- Designed for Use with 600 μm Thick THz Photoconductive Antenna
- Design Wavelength: 300 μm (1 THz)
- Index of Refraction at 1 THz: 3.41
- Index of Refraction Matched to Antenna for Minimal Refraction at Surface
The HSL12 Hyper-Hemispherical High Resistivity Float Zone Silicon (HRFZ-Si) Lens for THz radiation is designed for use in direct contact with a THz photoconductive antenna. The hyper-hemispherical shape, along with an index of refraction close to that of the antenna, allows for a large (~70°) collection angle of the THz radiation. The exact collection angle and THz output profile will depend on the antenna used. The HSL12 lens delivers a divergent THz beam that can be collimated or focused with an additional THz TPX or PTFE lens or an off-axis parabolic mirror.
HRFZ-Si is suitable for a wide range of wavelengths from NIR (1.2 µm) to millimeter (1000 µm) waves. This material has superior transmission properties due to its high resistance and lack of absorption lines in the THz region, making it ideal for applications such as THz time-domain spectroscopy.
| Posted Comments: | |
SeongHun Jeon
(posted 2022-08-09 14:54:44.52) Hello, this is Korea Maritime University's Optoelectronic Lab.
I want a Hyperhemispheric silicon lens with a diameter of 10mm and a height of 6.445mm.
Can you customize it?
I'd appreciate it if you could reply. cdolbashian
(posted 2022-08-15 04:36:38.0) Thank you for reaching out to us with this inquiry. At this time we are not able to produce a custom Hyperhemispherical lens. For future custom inquiries, please reach out to techsales@thorlabs.com. |
HRFZ-Si, THz Lens