Momentum-dependent intraband high harmonic generation in a photodoped indirect semiconductor

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00584821" target="_blank" >RIV/68378271:_____/24:00584821 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/24:10483079

Výsledek na webu

<a href="https://hdl.handle.net/11104/0353740" target="_blank" >https://hdl.handle.net/11104/0353740</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s42005-024-01593-x" target="_blank" >10.1038/s42005-024-01593-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Momentum-dependent intraband high harmonic generation in a photodoped indirect semiconductor

Popis výsledku v původním jazyce

Nonlinear optical response of solid-state materials exposed to strong non-resonant light fields leads to the generation of harmonic frequencies as a consequence of interband polarization and coherent intraband dynamics of the electrons. The efficient production of a macroscopic wave requires the preservation of the mutual phase between the driving wave and the individual microscopic sources of radiation. Here, we experimentally and theoretically show that the yield of high harmonic generation in a photodoped silicon crystal is enhanced by the nonlinear intraband current whose amplitude depends not only on the volume density of the photogenerated carriers but also on their momentum distributions within the bands. The strongest enhancement is reached when the carrier system is relaxed to the band minima before interacting with the strong nonresonant wave, which drives the high harmonic generation. These results extend the possibilities of high harmonic spectroscopy towards the investigation of ultrafast carrier relaxation in condensed matter.

Název v anglickém jazyce

Momentum-dependent intraband high harmonic generation in a photodoped indirect semiconductor

Popis výsledku anglicky

Nonlinear optical response of solid-state materials exposed to strong non-resonant light fields leads to the generation of harmonic frequencies as a consequence of interband polarization and coherent intraband dynamics of the electrons. The efficient production of a macroscopic wave requires the preservation of the mutual phase between the driving wave and the individual microscopic sources of radiation. Here, we experimentally and theoretically show that the yield of high harmonic generation in a photodoped silicon crystal is enhanced by the nonlinear intraband current whose amplitude depends not only on the volume density of the photogenerated carriers but also on their momentum distributions within the bands. The strongest enhancement is reached when the carrier system is relaxed to the band minima before interacting with the strong nonresonant wave, which drives the high harmonic generation. These results extend the possibilities of high harmonic spectroscopy towards the investigation of ultrafast carrier relaxation in condensed matter.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

COMMUNICATIONS PHYSICS

ISSN

2399-3650

e-ISSN

2399-3650

Svazek periodika

7

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

104

Kód UT WoS článku

001188874300003

EID výsledku v databázi Scopus

2-s2.0-85188318859