Optically modified second harmonic generation in silicon oxynitride thin films via local layer heating
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F23%3A00578067" target="_blank" >RIV/61389021:_____/23:00578067 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24220/23:00011229
Result on the web
<a href="https://www.nature.com/articles/s41598-023-35593-8" target="_blank" >https://www.nature.com/articles/s41598-023-35593-8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41598-023-35593-8" target="_blank" >10.1038/s41598-023-35593-8</a>
Alternative languages
Result language
angličtina
Original language name
Optically modified second harmonic generation in silicon oxynitride thin films via local layer heating
Original language description
Strong second harmonic generation (SHG) in silicon nitride has been extensively studied—among others, in terms of laser-induced SHG enhancement in Si3N4 waveguides. This enhancement has been ascribed to the all-optical poling induced by the coherent photogalvanic effect. Yet, an analogous process for Si3N4 thin films has not been reported. Our article reports on the observation of laser-induced threefold SHG enhancement in Si3N4 thin films. The observed enhancement has many features similar to all-optical poling, such as highly nonlinear power dependence, cumulative effect, or connection to the Si3N4–Si interface. However, identical experiments for low-oxygen silicon oxynitride thin films lead to complex behavior, including laser-induced SHG reduction. Following a thorough experimental study, including the effects of repetition rate or pulse length, the observed results were ascribed to heat-induced SHG variation. In addition to revealing a new mechanism of laser-induced SHG variation, our results also provide a means to identify this mechanism.
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
20506 - Coating and films
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Scientific Reports
ISSN
2045-2322
e-ISSN
2045-2322
Volume of the periodical
13
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
8658
UT code for WoS article
000999237500015
EID of the result in the Scopus database
2-s2.0-85160327399