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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

<a href="/en/project/GA15-05360S" target="_blank" >GA15-05360S: Temperature influence on spectroscopic and lasing characteristics of solid-state materials covering spectral range from visible up to mid-infrared</a><br>

Continuities

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

Publication year

2016

Confidentiality

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

Article name in the collection

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

ISBN

978-1-62841-961-0

ISSN

0277-786X

e-ISSN

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Number of pages

6

Pages from-to

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Publisher name

SPIE

Place of publication

Bellingham (stát Washington)

Event location

San Francisco

Event date

Feb 13, 2016

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000383765300033