Superlattice nonlinearities for gigahertz-terahertz generation in harmonic multipliers

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Superlattice nonlinearities for gigahertz-terahertz generation in harmonic multipliers

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Superlattice nonlinearities for gigahertz-terahertz generation in harmonic multipliers

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/GA19-03765S" target="_blank" >GA19-03765S: Laditelná GHz-THz nelineární optika v polovodičových super-mřížkách</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Nanophotonics

ISSN

2192-8606

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

13

Strana od-do

3941-3952

Kód UT WoS článku

000568281600018

EID výsledku v databázi Scopus

2-s2.0-85088366434