Superlattice nonlinearities for gigahertz-terahertz generation in harmonic multipliers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00538979" target="_blank" >RIV/68378271:_____/20:00538979 - isvavai.cz</a>

Result on the web

<a href="http://hdl.handle.net/11104/0316710" target="_blank" >http://hdl.handle.net/11104/0316710</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/nanoph-2020-0155" target="_blank" >10.1515/nanoph-2020-0155</a>

Result language

angličtina

Original language name

Superlattice nonlinearities for gigahertz-terahertz generation in harmonic multipliers

Original language description

Semiconductor superlattices are strongly nonlinear media offering several technological challenges associated with the generation of high-frequency Gigahertz radiation and very effective frequency multiplication up to several Terahertzs. However, charge accumulation, traps and interface defects lead to pronounced asymmetries in the nonlinear current flow, from which high harmonic generation stems. This problem requires a full non-perturbative solution of asymmetric current flow under irradiation, which we deliver in this paper within the Boltzmann-Bloch approach. We investigate the nonlinear output on both frequency and time domains and demonstrate a significant enhancement of even harmonics by tuning the interface quality. Moreover, we find that increasing arbitrarily the input power is not a solution for high nonlinear output, in contrast with materials described by conventional susceptibilities. There is a complex combination of asymmetry and power values leading to maximum high harmonic generation.n

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/GA19-03765S" target="_blank" >GA19-03765S: Controllable GHz-THz Nonlinear Optics in Semiconductor Superlattices</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nanophotonics

ISSN

2192-8606

e-ISSN

—

Volume of the periodical

9

Issue of the periodical within the volume

12

Country of publishing house

DE - GERMANY

Number of pages

13

Pages from-to

3941-3952

UT code for WoS article

000568281600018

EID of the result in the Scopus database

2-s2.0-85088366434