Filtres térahertz
Band pass BPF · Band stop BSF · Low pass LPF · High pass HPF
Filtres passe-bande, coupe-bande, passe-bas et passe-haut pour le térahertz. Transmission de crête > 70 %, typiquement > 90 %. Fréquence centrale tenue à < 5 %, personnalisable à < 1 %, et largeur de bande < 30 %, personnalisable à < 1 %. Tailles jusqu’à 150 mm, à partir de 100 euros pour un Type I de 10 mm.
Délai de livraison sur demande
Les prix en ligne sont donnés à titre indicatif uniquement. Les prix exacts peuvent être jusqu’à 20% plus élevés selon le taux de change en vigueur — veuillez demander une offre formelle.
Four filter families, all metal mesh: **band pass (BPF)** for isolating one line, **band stop (BSF)** for rejecting one, **low pass (LPF)** for cutting everything above a frequency, and **high pass (HPF)** for cutting everything below it. Peak transmission is above 70 % and typically better than 90 %.
Centre frequency is held to within 5 % as standard and can be specified to better than 1 %; bandwidth is under 30 % as standard and can be narrowed below 1 %. Clear apertures run to 150 mm. Anything outside the standard range is made to order — tell us the frequency, the width and the aperture you need.
Every curve in the figures below is a measurement, not a model. The low-pass data was taken on a Perkin-Elmer FTIR spectrometer with each sample scan ratioed against its own open-beam reference; where a second trace appears above the filter curve, that is the reference.
- ▸ **Low pass, 3 THz type** — measured half-power cut-off **3.0 THz**, passband 87 %, blocking 1.4 % (−18.5 dB) median from 3.6 to 24 THz.
- ▸ **Low pass, 20 THz type** — measured half-power cut-off **21.5 THz**, passband 83 %, blocking 0.5 % median from 23 to 30 THz.
- ▸ Filter designations below are nominal. The measured cut-off of a mesh filter sits a little above the name it is sold under; both numbers are given so there is no ambiguity.
Choisissez votre spécification — la référence et le prix s'affichent immédiatement.
| Transmission de crête | > 70 % Typ. > 90 % |
|---|---|
| Tolérance sur la fréquence centrale | < 5 % personnalisable < 1 % |
| Largeur de bande | < 30 %. Personnalisable < 1 % |
| Taille | up to 150 mm |
| Type I | Passe-bande (BPF) | < 3 THz | 10 mm — 100 euros · 19 mm — 400 euros · > 19 mm — nous contacter |
| Type II | Passe-bande (BPF) | 3 – 30 THz | Contact |
| Type III | Band pass (BPF), high rejection | — | Contact |
| Type IV | Passe-bas (LPF) | measured examples at 3, 9.5 and 20 THz | Contact |
| — | Coupe-bande (BSF) | made to order | Contact |
| — | Passe-haut (HPF) | made to order | Contact |
Les filtres
Passe-bas (LPF)
Passe-bande (BPF)
Rigi Camera
Cristaux organiques (émetteurs)
Cristaux détecteurs THz
