Quadrature frequency resolved spectroscopy of upconversion photoluminescence in GeGaS:Er3+; II. elucidating excitation mechanisms of red emission besides green emission

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F17%3A39911176" target="_blank" >RIV/00216275:25310/17:39911176 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/17:10403198
Result on the web
<a href="https://link.springer.com/article/10.1007/s10854-017-6363-2" target="_blank" >https://link.springer.com/article/10.1007/s10854-017-6363-2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10854-017-6363-2" target="_blank" >10.1007/s10854-017-6363-2</a>

Result language
angličtina
Original language name
Quadrature frequency resolved spectroscopy of upconversion photoluminescence in GeGaS:Er3+; II. elucidating excitation mechanisms of red emission besides green emission
Original language description
The paper addresses the quadrature frequency resolved spectroscopy (QFRS) on the red (4F9/2 → 4I15/2) upconverted photoluminescence (UCPL) as well as the green (4S3/2 → 4I15/2) UCPL of Er3+ in GeGaS chalcogenide glasses at the pump wavelength 975 nm. On the basis of the perturbed rate equations for the generally accepted 5-level model of the green and red UCPLs of Er3+, we have derived the formulas for the QFRS on the green and red UCPLs of the two differently Er-doped samples. Adopting the respective formulas as model functions for the nonlinear regressions on the QFRS data of both the UCPLs, we have determined the relevant parameters such as relaxation rates at the four excited levels, the excited absorption cross section and energy transfer parameters. Thereby the differences of UCPL dynamics between the green and red UCPLs as well as between the two differently Er-doped Ge25Ga10S65 samples are interpreted in terms of the determined parameters.
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
10306 - Optics (including laser optics and quantum optics)

Project
<a href="/en/project/GA15-07912S" target="_blank" >GA15-07912S: New 2D layered chalcogenides thin films and 3D nanostructures: Synthesis and characterization</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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