QMC THz Low-pass filters LPF
Product Introduction
QMC THz Low-pass filters deliver excellent transmission and blocking performance across the terahertz band. Each terahertz low‑pass filter is hand‑crafted for customers, ensuring well‑defined cut‑off and transmission regions together with precise central frequencies.Terahertz low‑pass filters can be custom‑made in any shape and size with diameters ranging from 2 mm to 300 mm, and are operable under both ambient and cryogenic conditions. Larger diameters are available via special‑order requests; please contact us for detailed inquiries.Mounting options are also offered for these terahertz low‑pass filters. The standard mounting is a circular stainless‑steel (SS) ring with apertures from 6 mm to 85 mm, which is recommended for cryogenic applications. Custom‑fabricated mounts of any size or shape specified by customers are also available.
Specifications
Cut‑off Wavenumber(cm-1) | Cut‑off Frequency(THz) | Cut‑off Wavelength(μm) |
10 | 0.3 | 1000 |
20 | 0.6 | 500 |
33 | 1 | 300 |
66 | 2 | 150 |
100 | 3 | 100 |
200 | 6 | 50 |
300 | 9 | 30 |
650 | 20 | 15 |

| Product Name | Model Number | Technical Specifications | Inventory Quantity | Turnover Time |
| THz Low-pass filters | LPF-20THz-CA18 | Cut‑off Frequency:18THz,Clear Aperture≥18mm | 1 pc. | 2026/6/9 |