Last advances in Yb3+ doped CaF2 ceramics synthesis

Michel Mortier; Andréas Lyberis; Akiko Saganuma; Adam Stevenson; Daniel Vivien; Patrick Gredin; Gilles Patriarche

doi:10.1117/12.879461

3 March 2011 Last advances in Yb³⁺ doped CaF₂ ceramics synthesis

Michel Mortier, Andréas Lyberis, Akiko Saganuma, Adam Stevenson, Daniel Vivien, Patrick Gredin, Gilles Patriarche

Proceedings Volume 7912, Solid State Lasers XX: Technology and Devices; 79121R (2011) https://doi.org/10.1117/12.879461
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

One at% Yb:CaF₂ transparent ceramics for high power lasers are obtained by vacuum sintering and hot pressing nanoparticles synthesized through a soft chemistry route. The residual optical losses of these ceramics are as low as 0.09 cm^-1 (corresponding to an in-line transmittance of 96.7%) at 1200 nm. Densification during sintering is limited by large voids, but pressure assisted densification after sintering results in high optical quality transparent ceramics. Absorption spectra are similar to Yb:CaF₂ single crystal, and the fluorescence lifetime was measured to be 2 ms in the wavelength 1010 to 1050 nm range. The 1 at% Yb:CaF2 transparent ceramics successfully produced laser oscillation at 1031 nm when placed in an Omega-type laser cavity under 970 nm diode laser pumping.

Citation Download Citation

Michel Mortier, Andréas Lyberis, Akiko Saganuma, Adam Stevenson, Daniel Vivien, Patrick Gredin, and Gilles Patriarche "Last advances in Yb³⁺ doped CaF₂ ceramics synthesis", Proc. SPIE 7912, Solid State Lasers XX: Technology and Devices, 79121R (3 March 2011); https://doi.org/10.1117/12.879461

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