Wide spectral range optical characterization of tantalum pentoxide (Ta2O5) films by the universal dispersion model

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F25%3AN0000121" target="_blank" >RIV/00177016:_____/25:N0000121 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/25:00141079
Result on the web
<a href="https://opg.optica.org/ome/fulltext.cfm?uri=ome-15-4-903" target="_blank" >https://opg.optica.org/ome/fulltext.cfm?uri=ome-15-4-903</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OME.550708" target="_blank" >10.1364/OME.550708</a>

Result language
angličtina
Original language name
Wide spectral range optical characterization of tantalum pentoxide (Ta2O5) films by the universal dispersion model
Original language description
This study presents a comprehensive optical characterization of tantalum pentoxide (Ta2O5) thin films across a wide spectral range, using a combination of ellipsometric and spectrophotometric data. The films prepared using e-beam evaporation, ranging in thickness from 20 to 250 nm, were analyzed using a complex structural model that integrates inhomogeneous layer profiles with three distinct phases, allowing for a more accurate representation of the material's optical properties. A universal dispersion model was employed to describe the optical constants, revealing the refractive index and extinction coefficient with exceptional precision. This work stands out due to the extensive spectral range covered-extending from the far infrared (400 mu m, 25 cm-1) to the vacuum ultraviolet (116 nm, 10.7 eV)-and the diverse array of instruments used, providing a level of detail and insight into Ta2O5's optical behavior that has not been achieved before. This novel approach offers significant advancements in understanding Ta2O5's optical characteristics, demonstrating its potential for advanced optical coatings and optoelectronic applications.
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
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/EI22_002%2F0000677" target="_blank" >EI22_002/0000677: Pokročilá optika pro aplikace ultrakrátkých laserových pulzů ve vlnové oblasti DUV, VIS a NIR</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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