High-Frequency Products
STRETTA’s Multi-Beam X-Ray Tube Platform
Field emission enables X-ray generation without heated cathodes, allowing instantaneous switching and compact source geometries. STRETTA’s platform technology industrializes the field emission through controlled material engineering and system-level integration.
Technology Context
Field Emission Beyond Laboratory Concepts
Field emission has long been considered an attractive alternative to conventional thermionic cathodes. Operating at room temperature and switching within microseconds, it enables compact X-ray source geometries and precise emission control. Yet many carbon nanotube approaches have struggled to transition from laboratory feasibility to reliable industrial operation.
The main limitation lies in material uniformity. Conventional electrophoretic deposition methods often produce uneven nanotube layers with thickness variations that create localized electric field concentrations. These irregularities can lead to emission hotspots, current instability, localized heating, accelerated degradation and an increased risk of electrical arcing.
Field emission becomes industrially viable when material engineering and system electronics are designed together.
System Architecture
Field Emission Integrated into a System Platform
Industrial scalability requires more than cathode optimization alone. The platform is engineered as an integral component of the STRETTA Integrated System (SIS).
Within this architecture, the Electronic Control System (ECS) regulates extraction current at the emitter level, stabilizing emission across distributed focal spots.
At the same time, the High Voltage Generator (HVG) maintains stable extraction voltage during pulsed operation. Field emission becomes industrially reliable when cathode physics and system electronics are engineered together.
Emission Control
Stable Photon Output Under Pulsed Operation
Real-time current regulation and stabilized extraction voltage ensure consistent emission behavior during rapid switching sequences.
This coordinated system design prevents spectral drift, stabilizes photon energy output and preserves emission consistency across projection sequences.
The result is a deterministic X-ray source platform designed for demanding imaging environments.