Sol-gel route to highly transparent (Ho0.05Y0.95)2Ti2O7 thin films for active optical components operating at 2 mm

Kód výsledku v IS VaVaI

RIV/67985882:_____/18:00490319 - isvavai.cz

Nalezeny alternativní kódy

RIV/67985831:_____/18:00490319

Výsledek na webu

http://dx.doi.org/10.1016/j.optmat.2018.02.049

DOI - Digital Object Identifier

10.1016/j.optmat.2018.02.049

Jazyk výsledku

angličtina

Název v původním jazyce

Sol-gel route to highly transparent (Ho0.05Y0.95)2Ti2O7 thin films for active optical components operating at 2 mm

Popis výsledku v původním jazyce

We present a generic sol-gel route to the preparation of optically active nanocrystalline holmium-yttrium titanate (Ho0.5Y0.95)(2)Ti2O7 thin films, which exhibit a strong luminescence at 2 mu m. The films were prepared by the sol-gel process and thermally treated in a rapid thermal annealing furnace. The nano crystal size and optical properties were tailored by the processing temperature. The final film thickness was around 500 nm. X-ray diffraction analysis and Raman spectroscopy confirmed the high purity of the crystal phase of (Ho0.05Y0.95)(2)Ti2O7. The activation energy of crystal growth was 35.7 kJ mol(-1). The films had excellent structural and surface homogeneity causing their high transparency close to the theoretical limit of 93.39%. Refractive index of the film heat-treated at 1000 degrees C was around 1.98. The films exhibited strong emission at 2 mu m with a luminescence lifetime around 4.6 ms. Their properties together with processing feasibility make them promising materials for photonic applications

Název v anglickém jazyce

Sol-gel route to highly transparent (Ho0.05Y0.95)2Ti2O7 thin films for active optical components operating at 2 mm

Popis výsledku anglicky

We present a generic sol-gel route to the preparation of optically active nanocrystalline holmium-yttrium titanate (Ho0.5Y0.95)(2)Ti2O7 thin films, which exhibit a strong luminescence at 2 mu m. The films were prepared by the sol-gel process and thermally treated in a rapid thermal annealing furnace. The nano crystal size and optical properties were tailored by the processing temperature. The final film thickness was around 500 nm. X-ray diffraction analysis and Raman spectroscopy confirmed the high purity of the crystal phase of (Ho0.05Y0.95)(2)Ti2O7. The activation energy of crystal growth was 35.7 kJ mol(-1). The films had excellent structural and surface homogeneity causing their high transparency close to the theoretical limit of 93.39%. Refractive index of the film heat-treated at 1000 degrees C was around 1.98. The films exhibited strong emission at 2 mu m with a luminescence lifetime around 4.6 ms. Their properties together with processing feasibility make them promising materials for photonic applications

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

LD15122: Nové materiály a komponenty pro pokročilé vláknové lasery

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Optical Materials

ISSN

0925-3467

e-ISSN

—

Svazek periodika

—

Číslo periodika v rámci svazku

78

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

415-420

Kód UT WoS článku

000430994200056

EID výsledku v databázi Scopus

2-s2.0-85042780922