193 citations · 290 across the 7 of their papers we have counts for
7 papers
Distributed feedback terahertz frequency quantum cascade lasers with dual periodicity gratings
F. Castellano, S. Zanotto, L. H. Li +5
We have developed terahertz frequency quantum cascade lasers that exploit a double-periodicity distributed feedback grating to control the emission frequency and the output beam di…
Room-temperature transverse-electric polarized intersubband electroluminescence from InAs/AlInAs quantum dashes
V. Liverini, L. Nevou, F. Castellano +4
We report the observation of transverse electric polarized electroluminescence from InAs/AlInAs quantum dash quantum cascade structures up to room temperature. The emission is attr…
Room temperature terahertz polariton emitter
Markus Geiser, Giacomo Scalari, Fabrizio Castellano +2
The strong-coupling regime between an electronic transition and the photonic mode of a optical resonator manifests itself in the lifting of the degeneracy between the two modes and…
Ultra strong coupling regime and plasmon-polaritons in parabolic semiconductor quantum wells
Markus Geiser, Fabrizio Castellano, Giacomo Scalari +3
Ultra strong coupling is studied in a modulation-doped parabolic potential well coupled to an inductance-capacitance resonant circuit. In this system, in accordance to Kohn's theor…
A global root-finding method for high dimensional problems
Fabrizio Castellano
A method to solve the problem f(x) = 0 efficiently on any n-dimensional domain Omega under very broad hypoteses is proposed. The position of the root of f, assumed unique, is found…
Sequential multi-photon strategy for semiconductor-based terahertz detectors
F. Castellano, R. C. Iotti, F. Rossi
A semiconductor-based terahertz-detector strategy, exploiting a bound-to-bound-to-continuum architecture, is presented and investigated. In particular, a ladder of equidistant ener…