Diode pumped cryogenically cooled Tm:LuVO4 laser

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00367172" target="_blank" >RIV/68407700:21340/23:00367172 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1117/12.2649139" target="_blank" >https://doi.org/10.1117/12.2649139</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2649139" target="_blank" >10.1117/12.2649139</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Diode pumped cryogenically cooled Tm:LuVO4 laser

Popis výsledku v původním jazyce

We present a temperature influence (in range from 78 up to 300 K) on laser properties of Tm:LuVO4 vanadate crystal doped with 2 at. % of Tm3+. The sample was 2 mm thick plane-parallel face-polished single-crystal without any AR coating. The Tm:LuVO4 crystal was mounted in temperature-controlled copper holder of the liquid nitrogen cryostat. The 107 mm long semi-hemispherical laser resonator consisted of a flat pumping mirror (T < 95 % @ 788 nm, HR @ 1750-2100 nm) placed inside the cryostat and a curved output coupler (r=150 mm, R=97.5 % @ 1750-2100 nm) placed outside the cryostat. For longitudinal pumping, a fiber coupled laser diode was used. The diode was operating in the pulse regime (5 ms pulse length, 10 Hz repetition rate) at wavelength 788 nm. At 300 K, the laser emission was detected at 1931 nm with negligible power. With a temperature decrease the laser wavelength shifted to 1868 nm and the slope efficiency doubled from 7 % at 200 K up to 15 % at 78 K, while the laser threshold decreased more than five times. The maximum power amplitude of 0.8 W was achieved at 78 K. The quality of laser output beam was very good close to TEM00 mode. Using the SiO2 birefringent filter, we were able to switch the output wavelength between 1868 and 1931 nm.

Název v anglickém jazyce

Diode pumped cryogenically cooled Tm:LuVO4 laser

Popis výsledku anglicky

We present a temperature influence (in range from 78 up to 300 K) on laser properties of Tm:LuVO4 vanadate crystal doped with 2 at. % of Tm3+. The sample was 2 mm thick plane-parallel face-polished single-crystal without any AR coating. The Tm:LuVO4 crystal was mounted in temperature-controlled copper holder of the liquid nitrogen cryostat. The 107 mm long semi-hemispherical laser resonator consisted of a flat pumping mirror (T < 95 % @ 788 nm, HR @ 1750-2100 nm) placed inside the cryostat and a curved output coupler (r=150 mm, R=97.5 % @ 1750-2100 nm) placed outside the cryostat. For longitudinal pumping, a fiber coupled laser diode was used. The diode was operating in the pulse regime (5 ms pulse length, 10 Hz repetition rate) at wavelength 788 nm. At 300 K, the laser emission was detected at 1931 nm with negligible power. With a temperature decrease the laser wavelength shifted to 1868 nm and the slope efficiency doubled from 7 % at 200 K up to 15 % at 78 K, while the laser threshold decreased more than five times. The maximum power amplitude of 0.8 W was achieved at 78 K. The quality of laser output beam was very good close to TEM00 mode. Using the SiO2 birefringent filter, we were able to switch the output wavelength between 1868 and 1931 nm.

Druh

D - Stať ve sborníku

CEP obor

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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)

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 12399, Solid State Lasers XXXII: Technology and Devices

ISBN

9781510659032

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Bellingham (stát Washington)

Místo konání akce

San Francisco, California

Datum konání akce

28. 1. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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