An extremely high average and peak laser power has been achieved in disk lasers up today. However, the main limiting factors for further improving the laser characteristics are still the same: thermal effects, amplified spontaneous emission (ASE) effect, technologies of active elements cooling. One of the promising ways to improve the characteristics of disk lasers is the use of the composite structure of the active element (AE) [1,2]. In this work, we developed a new type of composite disk active elements from dissimilar materials (Yb: YAG / sapphire) and investigated optical quality of composite AE, the possibility of suppressing both ASE and parasitic thermal effects.

© 2019 IEEE

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