<div class="csl-bib-body">
<div class="csl-entry">Seres, J., Seres, E., Céspedes, E., Martinez-de-Olcoz, L., Zabala, M., & Schumm, T. (2023). Probing nonperturbative third and fifth harmonic generation on silicon without and with thermal oxide layer. <i>Journal of Optics</i>, <i>25</i>(10), Article 105501. https://doi.org/10.1088/2040-8986/acefe4</div>
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dc.identifier.issn
2040-8978
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/188679
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dc.description.abstract
We examine Si with and without additional SiO2 thin film coating as a candidate for producing powerful 3rd and 5th harmonics of Ti:sapphire laser pulses for future spectroscopic application. Polarization rotation experiments have been performed at different incident angles to determine the origin of the generated harmonics and a strong polarization-dependency of the harmonic signals was observed. A simplified tensor formalism is introduced to reproduce the measurements with high accuracy. Comparing the measurements with the Oh symmetry of the bulk crystal, the C2v structural symmetry for the uncoated Si sample and a C4v symmetry for the SiO2 coated sample, we conclude that the polarization anisotropies are determined by the surface/interface symmetries.
en
dc.description.sponsorship
European Commission
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dc.language.iso
en
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dc.publisher
IOP PUBLISHING LTD
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dc.relation.ispartof
Journal of Optics
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dc.subject
high harmonic generation
en
dc.subject
light-matter interaction
en
dc.subject
nonlinear optics
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dc.title
Probing nonperturbative third and fifth harmonic generation on silicon without and with thermal oxide layer