Growth, Structure, Spectroscopy, and Laser Operation of a “Mixed” Yb:(Y,Lu)3Al5O12 Garnet Crystal

Sami Slimi (1) , Pavel Loiko (2) , Mingyan Pan (3) , Pauline Lehoux (2, 4) , Venkatesan Jambunathan (5) , Martin Smrz (5) , Tomas Mocek (5) , Yicheng Wang (6) , Weidong Chen (3) , Valentin Petrov (7) , Rosa Maria Solé (1) , Magdalena Aguilo (1) , Francesc Diaz (1) , Patrice Camy (2) , Xavier Mateos (1)

1 Universitat Rovira i Virgili
2 CIMAP - UMR 6252 - Centre de recherche sur les Ions, les MAtériaux et la Photonique
3 CAS - Chinese Academy of Sciences [Beijing]
4 FOTON - Institut des Fonctions Optiques pour les Technologies de l'informatiON
5 FZU / CAS - Institute of Physics of the Czech Academy of Sciences
6 RUB - Ruhr University Bochum = Ruhr-Universität Bochum
7 MBI - Max-Born Institute for Nonlinear Optics and Short Pulse Spectroscopy

A single crystal of ytterbium-doped “mixed” yttrium–lutetium aluminum garnet with a stoichiometric composition (Y0.601Lu0.233Yb0.166)3Al5O12 was grown by the Czochralski method and its structure, vibronic, spectroscopic, laser properties were studied. The stimulated-emission cross-section for Yb3+ ions maximized to 2.53 × 10−20 cm2 at 1031 nm. emission bandwidth ~8 nm, reabsorption-free luminescence lifetime 2F5/2 state 1.063 ms. Pumped 941 Yb generated maximum output power 1.04 W 1.03 1.05 μm high slope efficiency 76.4% threshold 76 mW. continuous wavelength tuning over range 51.6 nm (1026.4–1078.0 nm) also achieved. Power scaling achieved using 969 diode-pumped microchip cavity. ~9 obtained 76% an almost circular beam profile.

Mots clés: Inorganic Chemistry; Condensed Matter Physics; General Materials Science; General Chemical Engineering

Domaines: Sciences de l'ingénieur [physics]

Sami Slimi, Pavel Loiko, Mingyan Pan, Pauline Lehoux, Venkatesan Jambunathan, et al.. Growth, Structure, Spectroscopy, and Laser Operation of a “Mixed” Yb:(Y,Lu)3Al5O12 Garnet Crystal. Crystals, 2023, Crystals, 13 (11), pp.1588. ⟨10.3390/cryst13111588⟩. ⟨hal-04302520⟩