Laser-diode pumped dysprosium-doped lead thiogallate laser output wavelength temporal evolution and tuning possibilities at 4.3-4.7 μm

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F16%3A00304674" target="_blank" >RIV/68407700:21340/16:00304674 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2212897" target="_blank" >http://dx.doi.org/10.1117/12.2212897</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2212897" target="_blank" >10.1117/12.2212897</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Laser-diode pumped dysprosium-doped lead thiogallate laser output wavelength temporal evolution and tuning possibilities at 4.3-4.7 μm

Popis výsledku v původním jazyce

On the basis of our previous Dy3+:PbGa2S4 laser study, laser output wavelength temporal evolution as well as tuning possibilities in the range 4.3–4.7 µm were investigated. Active crystal was pumped by a fiber-coupled Brightlase Ultra-50 diode laser (1.7 µm, max. power 7.5 W). Laser resonator was formed by flat dichroic pumping mirror (T = 70%@1.7 µm, R~100% @ 3.5 - 5 µm) and a concave (r = 200 mm) output coupler with R~99% @ 3.5 – 5 µm. The laser output wavelength dependence on the pump pulse duration and its evolution during the pulse was investigated first without any spectrally-selective element in the cavity. At pump pulse duration of 1 ms, generation just near Dy3+ fluorescence maximum of 4.35 µm has been observed. Prolongation of the pulse up to 5 ms led to similar lasing at 4.35 µm in the first millisecond, followed by simultaneous generation at 4.35 and 4.38 µm in the next millisecond, and further lasing at 4.6 µm till the end of the pump pulse. Increase of pump pulse duration up to 10 ms led to similar oscillation pulse development followed by generation at 4.6 µm only. Furthermore, output wavelength tuning using MgF2 birefringent filter as a cavity spectral selective element was investigated under 10 ms pumping. Almost continuous tuning without any significant dip has been observed within spectral range from 4.3 up to 4.7 µm. Due to practically closed cavity mean output power in the maximum of tuning curve was in the order of 400 µW.

Název v anglickém jazyce

Laser-diode pumped dysprosium-doped lead thiogallate laser output wavelength temporal evolution and tuning possibilities at 4.3-4.7 μm

Popis výsledku anglicky

On the basis of our previous Dy3+:PbGa2S4 laser study, laser output wavelength temporal evolution as well as tuning possibilities in the range 4.3–4.7 µm were investigated. Active crystal was pumped by a fiber-coupled Brightlase Ultra-50 diode laser (1.7 µm, max. power 7.5 W). Laser resonator was formed by flat dichroic pumping mirror (T = 70%@1.7 µm, R~100% @ 3.5 - 5 µm) and a concave (r = 200 mm) output coupler with R~99% @ 3.5 – 5 µm. The laser output wavelength dependence on the pump pulse duration and its evolution during the pulse was investigated first without any spectrally-selective element in the cavity. At pump pulse duration of 1 ms, generation just near Dy3+ fluorescence maximum of 4.35 µm has been observed. Prolongation of the pulse up to 5 ms led to similar lasing at 4.35 µm in the first millisecond, followed by simultaneous generation at 4.35 and 4.38 µm in the next millisecond, and further lasing at 4.6 µm till the end of the pump pulse. Increase of pump pulse duration up to 10 ms led to similar oscillation pulse development followed by generation at 4.6 µm only. Furthermore, output wavelength tuning using MgF2 birefringent filter as a cavity spectral selective element was investigated under 10 ms pumping. Almost continuous tuning without any significant dip has been observed within spectral range from 4.3 up to 4.7 µm. Due to practically closed cavity mean output power in the maximum of tuning curve was in the order of 400 µW.

Druh

D - Stať ve sborníku

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

<a href="/cs/project/GA15-05360S" target="_blank" >GA15-05360S: Vliv teploty na spektroskopické a laserové vlastnosti pevnolátkových aktivních materiálů pro viditelnou až střední infračervenou oblast</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices

ISBN

978-1-62841-961-0

ISSN

0277-786X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

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Název nakladatele

SPIE

Místo vydání

Bellingham (stát Washington)

Místo konání akce

San Francisco

Datum konání akce

13. 2. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000383765300033