Thermo-optical measurements of ytterbium doped sesquioxides ceramics

Vanessa Cardinali; Emilie Marmois; Bruno Le Garrec; Gilbert Bourdet

doi:10.1117/12.853860

17 May 2010 Thermo-optical measurements of ytterbium doped sesquioxides ceramics

Vanessa Cardinali, Emilie Marmois, Bruno Le Garrec, Gilbert Bourdet

Proceedings Volume 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers; 77210U (2010) https://doi.org/10.1117/12.853860
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

Measurements of the key thermo-optical properties of Yb³⁺ in sesquioxides ceramics Y₂O₃, Sc₂O₃ and Lu₂O₃ are done at room and cryogenic temperatures. We show that laser performances are improved at low temperatures. We obtain a maximum output energy of 570 mJ, corresponding to a slope efficiency of nearly 40%, in free running regime at 1 Hz with a 10 at. % Yb:Y₂O₃ ceramic at 77 K. Temperature effects on the emitted wavelength are also investigated. Room temperature measurements, using both "laser flash" and "hot disk" methods, lead to thermal conductivity values of ytterbium doped Y₂O₃ ceramics of 6.3 W/m.K and 5.3 W/m.K respectively. We also show that the thermal expansion coefficients of a 10 at. % Yb:Y₂O₃ and a 20 at. % Yb:YAG are divided by a factor two between 293 K and 130 K.

Citation Download Citation

Vanessa Cardinali, Emilie Marmois, Bruno Le Garrec, and Gilbert Bourdet "Thermo-optical measurements of ytterbium doped sesquioxides ceramics", Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77210U (17 May 2010); https://doi.org/10.1117/12.853860

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