Spectroscopics and Laser Properties of Er3+-doped Fluoride Laser Ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F13%3A00209521" target="_blank" >RIV/68407700:21340/13:00209521 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Spectroscopics and Laser Properties of Er3+-doped Fluoride Laser Ceramics

Popis výsledku v původním jazyce

Erbium ions are known to have good fluorescence properties in the mid-infrared spectral region near 3 um. That is why the investigation of fluorescence properties of Er3+ ions at the 4I11/2-4I13/2 mid-IR transition in recently developed CaF2:Er3+ high-optical-quality ceramics is of interest. The decay curves of Er3+ ions in CaF2 ceramics (Er3+ concentration of 5.5%) were measured for 4I11/2 and 4I13/2 electronic levels involved in mid IR lasing for low excitation intensities. The lifetime of the lower 4I13/2 level (13 ms) is about 1.5 times longer than that for the upper 4I11/2 level (8.5 ms). To investigate cross-relaxation channels depopulating the lower 4I13/2 level for 3 um laser operation, direct excitation of 4I13/2 by an Er:glass laser (1.53 um)was applied. The measured fluorescence up-conversion spectra for CaF2:Er3+ ceramics in visible and near-infrared spectral range were measured depending on excitation energy. It was demonstrated that for obtaining near-IR (990 nm) fluores

Název v anglickém jazyce

Spectroscopics and Laser Properties of Er3+-doped Fluoride Laser Ceramics

Popis výsledku anglicky

Erbium ions are known to have good fluorescence properties in the mid-infrared spectral region near 3 um. That is why the investigation of fluorescence properties of Er3+ ions at the 4I11/2-4I13/2 mid-IR transition in recently developed CaF2:Er3+ high-optical-quality ceramics is of interest. The decay curves of Er3+ ions in CaF2 ceramics (Er3+ concentration of 5.5%) were measured for 4I11/2 and 4I13/2 electronic levels involved in mid IR lasing for low excitation intensities. The lifetime of the lower 4I13/2 level (13 ms) is about 1.5 times longer than that for the upper 4I11/2 level (8.5 ms). To investigate cross-relaxation channels depopulating the lower 4I13/2 level for 3 um laser operation, direct excitation of 4I13/2 by an Er:glass laser (1.53 um)was applied. The measured fluorescence up-conversion spectra for CaF2:Er3+ ceramics in visible and near-infrared spectral range were measured depending on excitation energy. It was demonstrated that for obtaining near-IR (990 nm) fluores

Druh

O - Ostatní výsledky

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

<a href="/cs/project/GAP102%2F12%2F0320" target="_blank" >GAP102/12/0320: Pevnolátkové lasery středního infračerveného pásma</a><br>

Návaznosti

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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