Volumetric modification of transparent materials with two-color laser irradiation: insight from numerical modeling

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00586000" target="_blank" >RIV/68378271:_____/24:00586000 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0353621" target="_blank" >https://hdl.handle.net/11104/0353621</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma17081763" target="_blank" >10.3390/ma17081763</a>

Result language

angličtina

Original language name

Volumetric modification of transparent materials with two-color laser irradiation: insight from numerical modeling

Original language description

Traditionally, single-color laser beams are used for material processing and modifications of optical, mechanical, conductive, and thermal properties of different materials. So far, there are a limited number of studies about the dual-wavelength laser irradiation of materials, which, however, indicate a strong enhancement in laser energy coupling to solid targets. Here, a theoretical study is reported that aimed at exploring the volumetric excitation of fused silica with dual-wavelength (800 nm and 400 nm) ultrashort laser pulses focused on the material’s bulk. Numerical simulations are based on Maxwell’s equations, accounting for the generation of conduction electrons, their hydrodynamic motion in the laser field, and trapping into an excitonic state. It is shown that, by properly choosing the energies of the two laser harmonics successively coupling with the material, it is possible to strongly enhance the laser energy absorption as compared to the pulses of a single wavelength with the same total energy. Laser energy absorption strongly depends on the sequence of applied wavelengths, so that the shorter wavelength pre-irradiation can yield a dramatic effect on laser excitation by the following longer-wavelength pulse. The predictions of this study can open a new route for en- hancing and controlling the highly localized absorption of laser energy inside transparent materials for optoelectronic and photonic applications.

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

10306 - Optics (including laser optics and quantum optics)

Project

<a href="/en/project/EH22_008%2F0004596" target="_blank" >EH22_008/0004596: Sensors and Detectors for Future Information Society</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Volume of the periodical

17

Issue of the periodical within the volume

8

Country of publishing house

CH - SWITZERLAND

Number of pages

10

Pages from-to

1763

UT code for WoS article

001210367900001

EID of the result in the Scopus database

2-s2.0-85191435139