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- Title
Growth, Structure, Spectroscopy, and Laser Operation of a "Mixed" Yb:(Y,Lu) 3 Al 5 O 12 Garnet Crystal.
- Authors
Slimi, Sami; Loiko, Pavel; Pan, Mingyan; Lehoux, Pauline; Jambunathan, Venkatesan; Smrz, Martin; Mocek, Tomas; Wang, Yicheng; Chen, Weidong; Petrov, Valentin; Solé, Rosa Maria; Aguiló, Magdalena; Díaz, Francesc; Camy, Patrice; Mateos, Xavier
- Abstract
A single crystal of ytterbium-doped "mixed" yttrium–lutetium aluminum garnet with a stoichiometric composition of (Y0.601Lu0.233Yb0.166)3Al5O12 was grown by the Czochralski method and its structure, vibronic, spectroscopic, and laser properties were studied. The stimulated-emission cross-section for Yb3+ ions was maximized to 2.53 × 10−20 cm2 at 1031 nm. The emission bandwidth was ~8 nm, and the reabsorption-free luminescence lifetime of the 2F5/2 state was 1.063 ms. Pumped at 941 nm, the Yb laser generated a maximum output power of 1.04 W at 1.03 and 1.05 μm with a high slope efficiency of 76.4% and a laser threshold of 76 mW. A continuous wavelength tuning over a range of 51.6 nm (1026.4–1078.0 nm) was also achieved. Power scaling was achieved using a 969 nm diode-pumped microchip cavity. A maximum output power of ~9 W was obtained at 1.05 μm with a slope efficiency of 76% and an almost circular laser beam profile.
- Subjects
YTTERBIUM; THULIUM; GARNET; LASERS; ND-YAG lasers; SINGLE crystals; SOLID-state lasers; CRYSTALS; FIBER lasers
- Publication
Crystals (2073-4352), 2023, Vol 13, Issue 11, p1588
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst13111588