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Ti -Sapphire Thin-Disk Laser with Plano-Convex-Shaped Single-Crystal Diamond Heat Spreaders

MetadataDetails
Publication Date2019-06-01
AuthorsJan-Hinnerk Wolter, Andreas Voß, Richard Balmer, Sandrine Ricaud, Marie Antier
InstitutionsUniversity of Stuttgart, Thales (France)
Citations1

Titanium-doped sapphire (Ti:Al <sub xmlns:mml=ā€œhttp://www.w3.org/1998/Math/MathMLā€ xmlns:xlink=ā€œhttp://www.w3.org/1999/xlinkā€&gt;2&lt;/sub> O <sub xmlns:mml=ā€œhttp://www.w3.org/1998/Math/MathMLā€ xmlns:xlink=ā€œhttp://www.w3.org/1999/xlinkā€&gt;3&lt;/sub> ) is a gain medium with a very broad emission bandwidth allowing the generation and amplification of very short pulses (<; <; 00 fs) [1]. However, it is mainly used in rod laser architectures limiting its use to moderate average power. On the contrary, the thin-disk laser concept has proven to offer both power and energy scalability to a wide extent. Due to the relatively small gain product of Ti:sapphire compared to Yb-doped gain materials, especially Yb:YAG, and the temperature-dependent large fractional heating the task of building an efficient Ti:sapphire thin-disk laser oscillator is very challenging.