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Proceedings Paper

Growth, spectroscopy and laser operation of Yb3+,Na+/Li+-codoped CNGG-type garnets promising for ultrafast lasers
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Paper Abstract

Rare-earth-doped calcium niobium gallium garnets (Ca3Nb1.5Ga3.5O12, shortly CNGG) are disordered laser materials attractive for ultrashort pulse generation. We report on the crystal growth by the Czochralski method, spectroscopy and efficient laser operation of Yb3+,Na+ and Yb3+,Na+,Li+-codoped CNGG-type crystals. Their cubic structure is confirmed by X-ray diffraction and Raman spectroscopy. The absorption / stimulated-emission cross-sections and lifetime of Yb3+ are determined. Continuous-wave (CW) laser experiments are performed in a compact cavity using a 968-nm InGaAs pump laser diode. A 11.9 at.% Yb,Na:CNGG crystal generated 3.74 W at 1069.9 nm with a slope efficiency of 56.5%. Yb,Na:CNGG is promising for sub-100-fs mode-locked lasers at ~1 μm.

Paper Details

Date Published: 21 February 2020
PDF: 6 pages
Proc. SPIE 11259, Solid State Lasers XXIX: Technology and Devices, 1125911 (21 February 2020); doi: 10.1117/12.2545933
Show Author Affiliations
Zhongben Pan, Institute of Chemical Materials (China)
Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Pavel Loiko, Ctr. de Recherche sur les Ions, les Matériaux et la Photonique (France)
Josep Maria Serres, Univ. Rovira i Virgili (Spain)
Hualei Yuan, Institute of Chemical Materials (China)
Xiaojun Dai, Institute of Chemical Materials (China)
Huaqiang Cai, Institute of Chemical Materials (China)
Magdalena Aguiló, Univ. Rovira i Virgili (Spain)
Francesc Díaz, Univ. Rovira i Virgili (Spain)
Patrice Camy, Ctr. de Recherche sur les Ions, les Matériaux et la Photonique (France)
Yicheng Wang, Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Ruhr-Univ. Bochum (Germany)
Uwe Griebner, Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Valentin Petrov, Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Xavier Mateos, Univ. Rovira i Virgili (Spain)


Published in SPIE Proceedings Vol. 11259:
Solid State Lasers XXIX: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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