Laser emission at 428 nm in Nþ 2: Competition between two- and three-level amplification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2FCZ______%3A_____%2F23%3AN0000024" target="_blank" >RIV/CZ______:_____/23:N0000024 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.aip.org/aip/apl/article/122/11/111109/2880775/Laser-emission-at-428-nm-in-N2-Competition-between" target="_blank" >https://pubs.aip.org/aip/apl/article/122/11/111109/2880775/Laser-emission-at-428-nm-in-N2-Competition-between</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0132475" target="_blank" >10.1063/5.0132475</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Laser emission at 428 nm in Nþ 2: Competition between two- and three-level amplification

Popis výsledku v původním jazyce

Lasing of N(2 )(+)at 428 nm is studied as a function of the delay dt between two 800 nm ultrashort pumping pulses from a Ti:sapphire laser. This lasing corresponds to a population-inverted transition between levels B-2 sigma(+)(u) (0) and X-2 sigma(+)(g)(1) of a singly ionized nitrogen molecule. An important erasing of laser emission is observed under pumping with two consecutive pulses separated by large delays -20 ps < dt < +20 ps. From an analysis of the quenching results, we conclude that the mechanism of lasing corresponds to a coherent two-photon amplification scheme. Our results show that a two-photon process can dominate over a population-inverted one-photon amplification.

Název v anglickém jazyce

Laser emission at 428 nm in Nþ 2: Competition between two- and three-level amplification

Popis výsledku anglicky

Lasing of N(2 )(+)at 428 nm is studied as a function of the delay dt between two 800 nm ultrashort pumping pulses from a Ti:sapphire laser. This lasing corresponds to a population-inverted transition between levels B-2 sigma(+)(u) (0) and X-2 sigma(+)(g)(1) of a singly ionized nitrogen molecule. An important erasing of laser emission is observed under pumping with two consecutive pulses separated by large delays -20 ps < dt < +20 ps. From an analysis of the quenching results, we conclude that the mechanism of lasing corresponds to a coherent two-photon amplification scheme. Our results show that a two-photon process can dominate over a population-inverted one-photon amplification.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Applied Physics Letters

ISSN

0003-6951

e-ISSN

1077-3118

Svazek periodika

122

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

111109

Kód UT WoS článku

000952266500005

EID výsledku v databázi Scopus

2-s2.0-85150371990