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Title: Sub-terahertz amplification in a semiconductor superlattice with moving charge domains
Authors: Makarov, V.V.
Hramov, Alexander E.
Koronovskii, Alexey A.
Alekseev, Kirill N.
Maximenko, V.A.
Greenaway, M.T.
Fromhold, T.M.
Moskalenko, Olga I.
Balanov, Alexander G.
Issue Date: 2015
Publisher: © American Institute of Physics
Citation: MAKAROV, V.V. ... et al, 2015. Sub-terahertz amplification in a semiconductor superlattice with moving charge domains. Applied Physics Letters, 106 (4), 043503.
Abstract: We theoretically study the high-frequency response of charge domains traveling through a strongly coupled semiconductor superlattice with an applied harmonic electromagnetic signal. Our calculations show that the superlattice alone can amplify signals with a frequency close to the domain transient frequency. Moreover, we show that if the superlattice is connected to a resonator, amplification becomes possible for much higher frequencies of the external signal (several hundred GHz). These promising results open the way to using semiconductor superlattices as efficient sub-THz amplifiers.
Description: This article was published in the journal Applied Physics Letters [© AIP Publishing]. It is also available at: http://dx.doi.org/10.1063/1.4906531
Sponsor: Russian Scientific Foundation supported study of the semiconductor superlattice coupled to resonator (Grant No. 14-12-00222). M.T.G. acknowledges financial support from the Leverhulme Trust (UK).
Version: Published
DOI: 10.1063/1.4906531
URI: https://dspace.lboro.ac.uk/2134/17298
Publisher Link: http://dx.doi.org/10.1063/1.4906531
ISSN: 0003-6951
Appears in Collections:Published Articles (Physics)

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