Diode pumped cryogenically cooled Tm:LuVO4 laser

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Diode pumped cryogenically cooled Tm:LuVO4 laser
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proc. SPIE 12399, Solid State Lasers XXXII: Technology and Devices
ISBN
9781510659032
ISSN
0277-786X
e-ISSN
1996-756X
Number of pages
6
Pages from-to
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Publisher name
SPIE
Place of publication
Bellingham (stát Washington)
Event location
San Francisco, California
Event date
Jan 28, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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