Strain-relaxed nanocrystalline diamond thin films with silicon vacancy centers using femtosecond laser irradiation for photonic applications

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00579802" target="_blank" >RIV/68378271:_____/23:00579802 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/23:10473233
Result on the web
<a href="https://hdl.handle.net/11104/0348601" target="_blank" >https://hdl.handle.net/11104/0348601</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsanm.2c04976" target="_blank" >10.1021/acsanm.2c04976</a>

Result language
angličtina
Original language name
Strain-relaxed nanocrystalline diamond thin films with silicon vacancy centers using femtosecond laser irradiation for photonic applications
Original language description
Here we show that femtosecond (fs) laser pulses focused via a microscope objective on a nanocrystalline diamond thin film can be employed to reduce background photoluminescence intensity by a factor of 5 with respect to the luminescence of SiV centers. Raman spectra show that this decrease is mainly caused by laser ablation of the sp2-related carbon phase present in-between the grains. The reduction of the sp2 carbon phase also leads to a local decrease in the optical absorption followed by an almost twofold increase in the SiV emission peak intensity. Moreover, the fs-irradiation also entails the release of strain inside such a layer as manifested by the observed shift of the Raman diamond peak toward the value measured in the monocrystalline diamond and by a blue-shift of the zero-phonon-line peak position of the SiV centers. Such a finding might enable the improvement of the optical quality of the nanocrystalline diamond-based photonic nanostructures.
Czech name
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Czech description
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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
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/GA19-14523S" target="_blank" >GA19-14523S: Stimulated emission and competitive processes in diamond optical centers</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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