Relaxation dynamics of femtosecond-laser-induced temperature modulation on the surfaces of metals and semiconductors

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00466424" target="_blank" >RIV/68378271:_____/16:00466424 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apsusc.2015.10.159" target="_blank" >http://dx.doi.org/10.1016/j.apsusc.2015.10.159</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apsusc.2015.10.159" target="_blank" >10.1016/j.apsusc.2015.10.159</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Relaxation dynamics of femtosecond-laser-induced temperature modulation on the surfaces of metals and semiconductors

Popis výsledku v původním jazyce

Formation of laser-induced periodic surface structures is a complicated phenomenon which involves periodic spatial modulation of laser energy absorption on the irradiated surface, transient changes in optical response, surface layer melting and/or ablation. The listed processes strongly depend on laser fluence and pulse duration as well as on material properties. This paper is aimed at studying the spatiotemporal evolution of a periodic modulation of the deposited laser energy, once formed upon irradiation of metal(Ti) and semiconductor(Si) surfaces.Assuming that the incoming laser pulse interferes with a surface electromagnetic wave, the resulting sinusoidal modulation of the absorbed laser energy is introduced into a two-dimensional two-temperature model developed for titanium and silicon. Simulations reveal that the lattice temperature modulation on the surfaces of both materials following from the modulated absorption remains significant for longer than 50ps after the laser pulse.

Název v anglickém jazyce

Relaxation dynamics of femtosecond-laser-induced temperature modulation on the surfaces of metals and semiconductors

Popis výsledku anglicky

Formation of laser-induced periodic surface structures is a complicated phenomenon which involves periodic spatial modulation of laser energy absorption on the irradiated surface, transient changes in optical response, surface layer melting and/or ablation. The listed processes strongly depend on laser fluence and pulse duration as well as on material properties. This paper is aimed at studying the spatiotemporal evolution of a periodic modulation of the deposited laser energy, once formed upon irradiation of metal(Ti) and semiconductor(Si) surfaces.Assuming that the incoming laser pulse interferes with a surface electromagnetic wave, the resulting sinusoidal modulation of the absorbed laser energy is introduced into a two-dimensional two-temperature model developed for titanium and silicon. Simulations reveal that the lattice temperature modulation on the surfaces of both materials following from the modulated absorption remains significant for longer than 50ps after the laser pulse.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

—

Projekt

<a href="/cs/project/ED2.1.00%2F01.0027" target="_blank" >ED2.1.00/01.0027: HiLASE: Nové lasery pro průmysl a výzkum</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Applied Surface Science

ISSN

0169-4332

e-ISSN

—

Svazek periodika

374

Číslo periodika v rámci svazku

Jun

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

157-164

Kód UT WoS článku

000375937300026

EID výsledku v databázi Scopus

2-s2.0-84949519117