Rydberg‐Bremsstrahlung‐Maser Available to Purchase

Stimulated emission of bremsstrahlung radiation by electrons in high Rydberg states is analysed theoretically. This approach to bremssstrahlung masers is shown to overcome some of the previous difficulties in realizing a practical value for the bremsstrahlung gain in the millimeter‐wave regime by allowing volumetric production of mono‐energetic electrons within a time period which is short compared to the thermalization time of the electron energy distribution, and by relaxing the criteria on the energy dependence bremsstrahlung gain coefficient.