Harmonic generation in biased semiconductor superlattices

0557791 - FZÚ 2023 RIV CH eng J - Journal Article
Pereira, Mauro Fernandes
Harmonic generation in biased semiconductor superlattices.
Nanomaterials. Roč. 12, č. 9 (2022), č. článku 1504. E-ISSN 2079-4991
EU Projects: European Commission(XE) 832876 - aqua3S
Institutional support: RVO:68378271
Keywords : gigahertz * terahertz * sub-terahertz * semiconductor superlattices * harmonic generation
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 5.3, year: 2022
Method of publishing: Open access

Semiconductor superlattices are proven nanomaterials for THz nonlinear optics by means of high order harmonic generation. Seminal approaches leading to a perfectly antisymmetric current-voltage (I–V.) curve predict the generation of odd harmonics only in the absence of a bias. However, even harmonics at high orders have been detected in several experiments. Their generation has been explained by considering deviations from the current flow symmetry that break the exact antisymmetry of the I–V. curve. In this paper, we focus on another issue found experimentally that has also not been explained, namely the harmonic power output asymmetry from negative to positive applied bias.
Permanent Link: https://hdl.handle.net/11104/0339389