Gain-switched laser operation of Cr2+,Fe2+:Zn1-xMgxSe (x approximate to 0.2; x approximate to 0.3) single crystals under Cr2+ -> Fe2+ energy transfer at similar to 1.73 mu m and direct Fe2+ ions excitation at similar to 2.94 mu m

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F21%3A00352568" target="_blank" >RIV/68407700:21340/21:00352568 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jlumin.2021.118375" target="_blank" >https://doi.org/10.1016/j.jlumin.2021.118375</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jlumin.2021.118375" target="_blank" >10.1016/j.jlumin.2021.118375</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gain-switched laser operation of Cr2+,Fe2+:Zn1-xMgxSe (x approximate to 0.2; x approximate to 0.3) single crystals under Cr2+ -> Fe2+ energy transfer at similar to 1.73 mu m and direct Fe2+ ions excitation at similar to 2.94 mu m

Popis výsledku v původním jazyce

Novel Zn1-xMgxSe (x approximate to 0.2 and x approximate to 0.3) single crystals co-doped with Cr2+ and Fe2+ ions were investigated. The excitation was performed either via the energy transfer from Cr2+ to Fe2+ ions with Q-switched Er:YLF laser at the wavelength of similar to 1.73 mu m or with direct Fe2+ ions excitation with Q-switched Er:YAG laser system at similar to 2.94 mu m, for comparison. The temperature dependences of spectroscopic characteristics were measured for both types of excitation. The crystal with a higher amount of magnesium (x approximate to 0.3) has broader absorption bands for both doping ions and their maxima are shifted towards longer wavelengths. The fluorescence spectra were similar for both types of the excitation. The difference caused by the excitation process was observed in fluorescence decay time measurements. For the direct Fe2+ ions pumping the fluorescence decay time was shorter for all measured temperatures in comparison with the excitation via the Cr2+ -> Fe2+ energy transfer. The same difference was observed in measured delay times between the pump and fluorescence signals. The Fe2+ ions laser oscillation spectra at 78 K were centered around the same wavelengths for both types of excitation: similar to 4.5 mu m and similar to 4.85 mu m for magnesium contents of x approximate to 0.2 and x approximate to 0.3, respectively.

Název v anglickém jazyce

Gain-switched laser operation of Cr2+,Fe2+:Zn1-xMgxSe (x approximate to 0.2; x approximate to 0.3) single crystals under Cr2+ -> Fe2+ energy transfer at similar to 1.73 mu m and direct Fe2+ ions excitation at similar to 2.94 mu m

Popis výsledku anglicky

Novel Zn1-xMgxSe (x approximate to 0.2 and x approximate to 0.3) single crystals co-doped with Cr2+ and Fe2+ ions were investigated. The excitation was performed either via the energy transfer from Cr2+ to Fe2+ ions with Q-switched Er:YLF laser at the wavelength of similar to 1.73 mu m or with direct Fe2+ ions excitation with Q-switched Er:YAG laser system at similar to 2.94 mu m, for comparison. The temperature dependences of spectroscopic characteristics were measured for both types of excitation. The crystal with a higher amount of magnesium (x approximate to 0.3) has broader absorption bands for both doping ions and their maxima are shifted towards longer wavelengths. The fluorescence spectra were similar for both types of the excitation. The difference caused by the excitation process was observed in fluorescence decay time measurements. For the direct Fe2+ ions pumping the fluorescence decay time was shorter for all measured temperatures in comparison with the excitation via the Cr2+ -> Fe2+ energy transfer. The same difference was observed in measured delay times between the pump and fluorescence signals. The Fe2+ ions laser oscillation spectra at 78 K were centered around the same wavelengths for both types of excitation: similar to 4.5 mu m and similar to 4.85 mu m for magnesium contents of x approximate to 0.2 and x approximate to 0.3, respectively.

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

<a href="/cs/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Centrum pokročilých aplikovaných přírodních věd</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Luminescence

ISSN

0022-2313

e-ISSN

1872-7883

Svazek periodika

240

Číslo periodika v rámci svazku

118375

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000697022100003

EID výsledku v databázi Scopus

2-s2.0-85114770704