Preprint E53/2018
THz Generation by GHz Multiplication in Superlattices
Mauro Fernandes Pereira | Vladmir Anfertev | Jorge Passamani Zubelli | Vladmir Vaks
Keywords: Frequency Multiplication | GHz | THz | TERA-MIR | Nonlinearities | Semiconductor Superlattices

In this paper, we apply a hybrid Nonequilibrium Green’s Functions and relaxation rate approximation
approach to investigate frequency multiplication in the GHz to THz range delivering results in good agreement
with experimental data for different input frequencies. A discussion of the current limitation of housing designs
for the superlattices is given, based a simple model for the local electric field and in comparison with measured
input powers delivered by a backward wave oscillator.