Recent Advances in Superlattice Frequency Multipliers

Semiconductor superlattice frequency multipliers have emerged as a nonlinear medium able to generate radiation in wide range. This property facilitates the potential of sources suitable for sensing and spectroscopy applications. In this study, we further investigate consequences on harmonic generation multiplier after excitation by an input signal oscillating at different frequencies. Here provide rigorous description our theoretical model including semiclassical Boltzmann approach miniband transport non-equilibrium Green’s functions calculations treating scattering processes under forward reverse bias. To fully exploit features source, focus effects elastic systematic imperfections structure which lead asymmetric current flow.