Scientific Results

High efficiency emission of a laser based on Yb-doped (Lu,Y)(2)O-3 ceramic

Year: 2018

Authors: Toci G., Pirri A., Patrizi B., Maksimov R. N., Osipov V. V., Shitov V. A., Yurovskikh A. S., Vannini M.

Autors Affiliation: [Toci, Guido; Vannini, Matteo] CNR Natl Res Council, Ist Nazl Ott, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, FI, Italy.
[Pirri, Angela] CNR Natl Res Council, Ist Fis Applicata Nello Carrara, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, FI, Italy.
[Patrizi, Barbara] CNR Natl Res Council, Ist Nazl Ott, Via G Moruzzi 1, I-56124 Pisa, PI, Italy.
[Maksimov, Roman N.; Osipov, Vladimir V.; Shitov, Vladislav A.] Inst Electrophys UrB RAS, Amundsen St 106, Ekaterinburg 620016, Russia.
[Maksimov, Roman N.; Yurovskikh, Artern S.] Ural Fed Univ, Mira St 19, Ekaterinburg 620002, Russia.

Abstract: We demonstrated highly efficient laser emission of a 6% at Yb:(Lu,Y)(2)O-3 ceramic sample with formula (Th0.06Lu0.12Y0.78Zr0.04)(2)O-3 (Le. Yb doped solid solution of Y2O3 and Lu2O3 with Zirconia as sintering aid) fabricated by means of solid-state sintering of mixed sesquioxide nanoparticles under vacuum. The ceramics features a very good optical quality, with a transmission very close to the theoretical limit. The spectroscopic characteristics were investigated, resulting in intermediate properties between Yb:Y2O3 and Yb:Lu2O3. Laser emission was obtained under diode pumping at 936 nm, in CW and quasi-CW pumping condition. We measured a maximum output power of 3.9 W at 1077 nm while the highest slope efficiency was 51.2%, in quasi-CW regime. In CW, at the same laser wavelength, the output power was 2.2 W with a corresponding slope efficiency of 35.1%. The explored range of tunability, 97 nm, is to the best of our knowledge one of the broadest and continuous intervals measured with Yb-doped materials. Mixed Lu-Y ceramic sesquioxides appear then as a promising laser material for broadly tunable laser sources and, in consequence, for the generation of ultrashort laser pulses.

Journal/Review: OPTICAL MATERIALS

Volume: 83      Pages from: 182  to: 186

More Information: National Research Council, NRC. Russian Foundation for Basic Research, RFBR, 18-03-00649 A. 0389-2016-0002. 2018-2020. Russian Foundation for Basic Research, RFBR. College of Natural Resources, University of California Berkeley, CNR, SAC.AD002.020.016. College of Natural Resources, University of California Berkeley, CNR, 18-53-7815. 02. A03.21.0006. – The Federal Agency for Scientific Organizations (FASO Russia) Grant No. 0389-2016-0002 (2018-2020 ); Russian Foundation for Basic Research (RFBR) Grant No. 18-03-00649 A ; Act 211 Government of the Russian Federation Grant no. 02.A03.21.0006 ; Joint Bilateral Agreement 2018-2020 between National Research Council (CNR), Italy / Russian Foundation for Basic Research (RFBR) (RFBR Grant No. 18-53-7815 , CNR project SAC.AD002.020.016 ).
KeyWords: Laser materials;Binary alloys; Ceramic materials; Efficiency; Lasers; Lutetium compounds; Sintering; Solid state lasers; Ultrashort pulses; Ytterbium; Zirconia, Good optical quality; Laser materials; Lasers and laser optics; Maximum output power; Solid state sintering; Spectroscopic characteristics; Transparent ceramic; Tunable laser sources, Pumping (laser)
DOI: 10.1016/j.optmat.2018.06.006

Citations: 16
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