Nanocrystalline Zn 2 TiO 4 films for distributed Bragg's reflectors operating in near infrared region

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F21%3A00543282" target="_blank" >RIV/67985882:_____/21:00543282 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.optmat.2021.110805" target="_blank" >https://doi.org/10.1016/j.optmat.2021.110805</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.optmat.2021.110805" target="_blank" >10.1016/j.optmat.2021.110805</a>

Result language

angličtina

Original language name

Nanocrystalline Zn 2 TiO 4 films for distributed Bragg's reflectors operating in near infrared region

Original language description

We present a generic sol-gel approach for the preparation of a distributed Bragg reflector (DBR) based on combining nanocrystalline Zn2TiO4 with amorphous SiO2 xerogel films. We determined the effects of the annealing temperatures on the structural and optical properties of nanocrystalline Zn2TiO4 films. The increasing size of nanocrystals and film's density caused a regular growth of the films' refractive indices at 632 nm from the value of 1.837-1.960. The acquired data were applied to design the DBR with tailored reflectance at 980 nm and the data predicted by the theoretical model were compared with experimental transmission and reflection spectra. Although the high optical losses caused by the Rayleigh scattering were observed at short wavelengths, the prepared films were fully transparent above 600 nm. The uniform dielectric structure reflecting over 97% of incident light at 980 nm was prepared from eight Bragg's pairs. The normalized spectral bandwidth was about 0.22. We proved the nanocrystalline films exhibiting scattering in UV-VIS spectral region can be used for the construction of the distributed Bragg's reflectors operating in near infrared region. The presented approach can be easily extended to other nanocrystalline films allowing the integration of nanocrystalline luminophores into advanced photonic structures

Czech name

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Czech description

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Type

J_imp - 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/GA16-10019S" target="_blank" >GA16-10019S: Bragg fibers for delivery of laser radiation in a spectral region 1900-2300 nm</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Optical Materials

ISSN

0925-3467

e-ISSN

1873-1252

Volume of the periodical

112

Issue of the periodical within the volume

FEB 2021

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

7

Pages from-to

110805

UT code for WoS article

000626140600008

EID of the result in the Scopus database

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