Thermal Management & Cathodes

SAES’ subsidiary Spectra-Mat, Inc specializes in dispenser cathodes and thermal management material.

Spectra-Mat’s indirectly heated cathodes are foundation in microwave devices and x-ray tubes.  Serving the entire microwave market from small terahertz devices to large klystrons and specialty MBKs and other gun types, Spectra-Mat’s cathode can be found in every aspect of society – medicine, space, defense, communications, electronic inspection, and providing cutting edge technology in US national labs.

Our hollow cathodes are currently being installed in multiple low earth orbit systems. The patented directly heated cathode developed by Spectra-Mat has been the mainstay of noble gas lasers for five decades.  These are renown for their robustness and longevity, often outlasting the gas reservoir itself.  For further details, visit the Spectra-Mat website at