Theory and measurements of harmonic generation in semiconductor superlattices with applications in the 100 GHz to 1 THz range

• Type: Article in International Scientific Journal
• Date: 2017-07-25

Authors

Rodrigues, AS (Author) FCUP; M. F. Pereira (Author) Other; J. P. Zubelli (Author) Other; D. Winge (Author) Other; A. Wacker (Author) Other; V. Anfertev (Author) Other; V. Vaks (Author) Other

Journal

Title: Physical Review B

Vol. 96

Initial page: 045306

ISSN: 2469-9950

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 28 Citations

Scopus - 41 Citations

Other information

Authenticus ID: P-00Q-1VX

DOI: 10.1103/physrevb.96.045306

Abstract (EN): This manuscript describes harmonic generation in semiconductor superlattices, starting from a nonequilibrium Green's functions input to relaxation rate-type analytical approximations for the Boltzmann equation in which imperfections in the structure lead to asymmetric current flow and scattering processes under forward and reverse bias. The resulting current-voltage curves and the predicted consequences on harmonic generation, notably the development of even harmonics, are in good agreement with experiments. Significant output for frequencies close to 1 THz (7th harmonic) at room temperature, after excitation by a 141-GHz input signal, demonstrate the potential of superlattice devices for gigahertz to terahertz applications.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5