Physical principles of the amplification of electromagnetic radiation due to negative electron masses in a semiconductor superlattice

A. V. Shorokhov, M. A. Pyataev, N. N. Khvastunov, T. Hyart, F. V. Kusmartsev, K. N. Alekseev

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

In a superlattice placed in crossed static electric and magnetic fields, under certain conditions, the inversion of electron population can appear at which the average energy of electrons is above the middle of the mini-band and the effective mass of the electron is negative. This is the implementation of the negative effective mass amplifier and generator (NEMAG) in the superlattice. It can result in the amplification and generation of terahertz radiation even in the absence of negative differential conductivity.

Original languageBritish English
Pages (from-to)766-770
Number of pages5
JournalJETP Letters
Volume100
Issue number12
DOIs
StatePublished - 2015

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