Dual-wavelength femtosecond laser-induced single-shot damage and ablation of silicon
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00584941" target="_blank" >RIV/68378271:_____/24:00584941 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/24:00375523 RIV/00216208:11320/24:10471271
Result on the web
<a href="https://doi.org/10.1016/j.apsusc.2023.158626" target="_blank" >https://doi.org/10.1016/j.apsusc.2023.158626</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2023.158626" target="_blank" >10.1016/j.apsusc.2023.158626</a>
Alternative languages
Result language
angličtina
Original language name
Dual-wavelength femtosecond laser-induced single-shot damage and ablation of silicon
Original language description
An experimental and theoretical study of laser-induced damage and ablation of silicon by two individual femtosecond pulses of different wavelengths, 1030 and 515 nm, is performed to address the physical mechanisms of dual-wavelength ablation and reveal possibilities for increasing the ablation efficiency. The produced craters and damaged areas are analyzed as a function of laser fluence and time separation between the pulses and are compared with monochromatic irradiation. The order of pulses is demonstrated to be essential in bi-color ablation with higher material removal rates when a shorter-wavelength pulse arrives first at the surface. Simulations based on the two-temperature model show that the visible pulse is profitable for the generation of the electron-hole plasma while the delayed IR pulse is efficiently absorbed in the plasma enhancing energy coupling to the target. At long delays of 30–100 ps, the dual-wavelength ablation is found to be particularly strong with formation of deep smooth craters. This is explained by the expansion of a hot liquid layer produced by the first pulse with a drastic decrease in the surface reflectivity at this timescale. The results provide insight into the processes of dual-wavelength laser ablation offering a better control of the energy deposition into material.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/EF15_003%2F0000445" target="_blank" >EF15_003/0000445: Advanced designing of functional materials: From mono- to BI- And TRI-chromatic excitation with tailored laser pulses</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
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Surface Science
ISSN
0169-4332
e-ISSN
1873-5584
Volume of the periodical
643
Issue of the periodical within the volume
Jan
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
15
Pages from-to
158626
UT code for WoS article
001094464900001
EID of the result in the Scopus database
2-s2.0-85174217168