THz devices
Powering THz innovation for space, communication, and beyond
Lepto designs and manufactures efficient, scalable terahertz devices. Starting with precision filters powering secure 6G and satellite links.
Scalability
Built for volume
Space
Ready for orbit
Low-loss
>90% Transmission
50 GHz – 20 THz
Operating range
Custom-design
Manufacturing
Products
What we build
A new generation of THz devices for efficient control and manipulation of THz beams of 6G signals for space and Earth communication. Our technology is patented, and our devices are shipped as engineered stacks with precision holders.
Band-Pass Filters
Precisely tuned THz filters that transmit only a narrow frequency band while blocking out-of-band noise.
Options: Custom central frequency and bandwidth
Polarizers
THz thin-film polarizers define and control the polarization state of your signal with a high extinction ratio.
Lead time: 4–6 weeks
Diffraction Gratings
Engineered THz gratings that spatially disperse radiation by wavelength for channel separation and spectroscopy.
Lead time: 4–6 weeks
THz devices in the pipeline
Custom low-pass filters, beam splitters, waveplates, waveguides, mirrors, and lenses engineered to your specifications.
Options: Custom operating range and bandwidth
Use cases
Built for 6G and space — useful everywhere
From orbit-ready payloads to high-speed terrestrial links, Lepto’s THz components help teams shape cleaner signals, reduce loss, and integrate advanced systems faster.
Cleaner THz channels for communication, sensing, and spectroscopy
Lepto optics help select, filter, polarize, and shape THz frequencies, improving signal quality across satellite links, 6G infrastructure, imaging, and research environments.
Explore the technologyGround-to-satellite links
Make connections to low-Earth-orbit (LEO) satellites more reliable. Our filters, beam splitters, and polarizers help shape the spectrum and reduce signal loss, allowing to pack channels tighter and keep links stable even with many satellites overhead.
6G backhaul & fronthaul
Build dense, flexible networks without drowning in interference. THz filters and gratings let you separate channels cleanly and keep latency low, so data transmit fast between radios, hubs, and small cells.
THz imaging & security
Get clearer pictures. Our low-loss filters and polarizers suppress noise so cameras and scanners provide higher image contrast – indispensable for medical, industrial, and security imaging.
Space payloads
Fly hardware that’s small, sturdy, and efficient. Temperature-tolerant and light-weight THz devices – filters, beam splitters, and polarizers – fit tight small-sat designs and keep constellation links clean without heavy, power-hungry RF chains.
Testimonials
Trusted by teams building at the edge
Our devices and support help teams ship real systems — not just demonstrations.
PSI
Steven Johnson, Professor of physics at ETH Zurich and head of the experimental “pump” laser group of PSI
“Your highly selective narrowband THz filters were instrumental in adapting our THz source for applications in quantum information.”
ETH
Jerome Faist, Professor in the Physics department at ETH, Quantum Optoelectronics Group (QOE)
“We required a 3 THz bandpass filter for time-domain spectroscopy measurements to reduce background signal. The filter provided by Lepto was very effective and much less lossy than other filtering methods we tried. Plus, the packaging made it very easy to mount on an optical post and easily slot into our experimental system.”
Max Planck Institut für Kernphysik
Laura Cattaneo, Group leader at the Max Planck Institute for Nuclear Physics
“Working with Lepto has been a great experience. Their THz filters combine excellent performance with reliability, and the team’s innovative approach makes collaboration effortless. We are excited to continue with their upcoming THz polarizers.”
Supported by
Supported by ESA BIC, connected through space networks
Lepto is participating in the ESA Business Incubation Centre Switzerland and connected to selected space innovation networks that help bring THz technology closer to real-world space and communication systems.
ESA BIC Switzerland
Space network
Build your THz system with precision
Let’s shape the future of communication, sensing, and space systems together with efficient, scalable THz components.