Comparison of three different methods for coupling of microwave and terahertz signals generated by resonant laser-assisted field emission

摘要

Photomixing in resonant laser-assisted field emission can cause the emitted current to oscillate at frequencies from dc to over 100 THz, and thus shows promise for new ultrawide band devices. The signal occurs at the apex of the emitter, an we consider three methods for coupling this signal to an external load while avoiding the effects of dispersion of the bunched electron beam and the large series beam impedance (=1 GΩ).