Laser Diode Pumped Cr:ZnSe CW Laser Tunable in Mid-IR Range of 2.05-2.65 μm

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00368740" target="_blank" >RIV/68407700:21340/23:00368740 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1117/12.2665334" target="_blank" >https://doi.org/10.1117/12.2665334</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2665334" target="_blank" >10.1117/12.2665334</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Laser Diode Pumped Cr:ZnSe CW Laser Tunable in Mid-IR Range of 2.05-2.65 μm

Popis výsledku v původním jazyce

The spectral and laser characteristics of two anti-reflection (AR) coated Cr:ZnSe single crystals 3 mm and 5 mm long were investigated under ~1.7 μm laser diode pumping. The crystals were assembled in a copper holder actively cooled by circulating water. Room temperature absorption and fluorescence spectra were measured, together with the fluorescence lifetime of Cr2+ ions were measured. The influence of the pump pulse durations on the output laser power was investigated. The mean output power of ~2.7 W in CW mode at the wavelength of ~2.4 μm (~24% slope efficiency) was obtained with the 5 mm thick AR coated sample. In this case the M2 beam parameter of ~1.1±0.1 and the beam waist diameter of ~42±4 μm which corresponds to the maximum (in the beam waist) laser power density of ~200 kW/cm2. Furthermore, using a MgF2 birefringent plate, the laser output was tuned from ~2.05 μm up to ~2.65 μm with a spectral linewidth of ~5-10 nm and a Gaussian beam profile. The mean laser output power in the broad mid-infrared range of ~2.1-2.52 μm exceeded 1 W, which corresponds to a power density of at least ~73.5 kW/cm2.

Název v anglickém jazyce

Laser Diode Pumped Cr:ZnSe CW Laser Tunable in Mid-IR Range of 2.05-2.65 μm

Popis výsledku anglicky

The spectral and laser characteristics of two anti-reflection (AR) coated Cr:ZnSe single crystals 3 mm and 5 mm long were investigated under ~1.7 μm laser diode pumping. The crystals were assembled in a copper holder actively cooled by circulating water. Room temperature absorption and fluorescence spectra were measured, together with the fluorescence lifetime of Cr2+ ions were measured. The influence of the pump pulse durations on the output laser power was investigated. The mean output power of ~2.7 W in CW mode at the wavelength of ~2.4 μm (~24% slope efficiency) was obtained with the 5 mm thick AR coated sample. In this case the M2 beam parameter of ~1.1±0.1 and the beam waist diameter of ~42±4 μm which corresponds to the maximum (in the beam waist) laser power density of ~200 kW/cm2. Furthermore, using a MgF2 birefringent plate, the laser output was tuned from ~2.05 μm up to ~2.65 μm with a spectral linewidth of ~5-10 nm and a Gaussian beam profile. The mean laser output power in the broad mid-infrared range of ~2.1-2.52 μm exceeded 1 W, which corresponds to a power density of at least ~73.5 kW/cm2.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

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)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proc. SPIE 12577, High-power, High-energy Lasers and Ultrafast Optical Technologies

ISBN

978-1-5106-6274-2

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

11

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Bellingham (stát Washington)

Místo konání akce

Praha

Datum konání akce

24. 4. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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