Tunable Cr2+,Fe2+:Zn1-xMnxSe (x = 0.05) and (x = 0.3) lasers around 4.4 μm at 78 K pumped by a 1.94 μm Tm:fiber laser via Cr2+ -> Fe2+ energy transfer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00343991" target="_blank" >RIV/68407700:21340/20:00343991 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1117/12.2542819" target="_blank" >https://doi.org/10.1117/12.2542819</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2542819" target="_blank" >10.1117/12.2542819</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tunable Cr2+,Fe2+:Zn1-xMnxSe (x = 0.05) and (x = 0.3) lasers around 4.4 μm at 78 K pumped by a 1.94 μm Tm:fiber laser via Cr2+ -> Fe2+ energy transfer

Popis výsledku v původním jazyce

New laser applications as medicine treatment, air pollutants measurement, free-space communications, target illumination, and industrial technologies require laser radiation in the mid-infrared region of 4-6 mu m where Fe2+-based lasers can generate. Pumping of Fe2+-doped active material is usually provided by sources generating near 3 mu m (as YAG:Er, Er-fiber, or ZnSe:Cr) fitting the Fe2+ absorption maximum. Other promising pumping way is the energy transfer from Cr2+ to Fe2+ in co-doped materials. This energy transfer process in gain-switched operation under 200 ns, 1.73 mu m pulse excitation was reported recently. In this paper we would like to present 1 ms, 10 Hz laser operation of the Zn1-xMnxSe:Fe2+,Cr2+ (x = 0.3) crystal within the 78-110 K temperature range under 1.94 mu m commercial Tm:fiber laser pumping. The active crystal was placed in the cryostat and the cavity was formed by a curved dichroic pumping mirror and a curved output coupler. The slope efficiency of 1 % was achieved for 1.94 mu m pumping at 78 K. The central laser output wavelength at 78 K was similar to 4.45 mu m and the output spectrum temperature shift was about 2 nm/K. Furthermore, tunability range over 300 nm (4.35-4.67 mu m) obtained at 78 K using intracavity tuning element. The results will be compared to an analogous Zn1-xMnxSe:Fe2+ (x = 0.3) crystal in a gain-switched mode under Q-switched YAG:Er3+ 2.94 mu m laser pumping. Moreover, laser generation of crystals with different Mn concentration and CW generation will be also presented.

Název v anglickém jazyce

Tunable Cr2+,Fe2+:Zn1-xMnxSe (x = 0.05) and (x = 0.3) lasers around 4.4 μm at 78 K pumped by a 1.94 μm Tm:fiber laser via Cr2+ -> Fe2+ energy transfer

Popis výsledku anglicky

New laser applications as medicine treatment, air pollutants measurement, free-space communications, target illumination, and industrial technologies require laser radiation in the mid-infrared region of 4-6 mu m where Fe2+-based lasers can generate. Pumping of Fe2+-doped active material is usually provided by sources generating near 3 mu m (as YAG:Er, Er-fiber, or ZnSe:Cr) fitting the Fe2+ absorption maximum. Other promising pumping way is the energy transfer from Cr2+ to Fe2+ in co-doped materials. This energy transfer process in gain-switched operation under 200 ns, 1.73 mu m pulse excitation was reported recently. In this paper we would like to present 1 ms, 10 Hz laser operation of the Zn1-xMnxSe:Fe2+,Cr2+ (x = 0.3) crystal within the 78-110 K temperature range under 1.94 mu m commercial Tm:fiber laser pumping. The active crystal was placed in the cryostat and the cavity was formed by a curved dichroic pumping mirror and a curved output coupler. The slope efficiency of 1 % was achieved for 1.94 mu m pumping at 78 K. The central laser output wavelength at 78 K was similar to 4.45 mu m and the output spectrum temperature shift was about 2 nm/K. Furthermore, tunability range over 300 nm (4.35-4.67 mu m) obtained at 78 K using intracavity tuning element. The results will be compared to an analogous Zn1-xMnxSe:Fe2+ (x = 0.3) crystal in a gain-switched mode under Q-switched YAG:Er3+ 2.94 mu m laser pumping. Moreover, laser generation of crystals with different Mn concentration and CW generation will be also presented.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/GA18-11954S" target="_blank" >GA18-11954S: Optimalizace pevnolátkových aktivních materiálů pro blízkou a střední infračervenou spektrální oblast</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proc. SPIE 11259 Solid State Lasers XXIX: Technology and Devices

ISBN

978-1-5106-3281-3

ISSN

0277-786X

e-ISSN

—

Počet stran výsledku

7

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Bellingham

Místo konání akce

San Francisco, CA

Datum konání akce

1. 2. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000568169600029