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Q: Fachverband Quantenoptik und Photonik

Q 11: Laserentwicklung (Festkörperlaser II / Andere Laserquellen)

Q 11.5: Vortrag

Dienstag, 11. März 2008, 09:30–09:45, 3H

Efficient cw Thin Disk Laser Operation of Yb:Ca₄YO(BO₃)₃ with 20W Output Power — •Christian Kränkel, Rigo Peters, Klaus Petermann, and Günter Huber — Institut für Laser-Physik, Universität Hamburg

We report on continuous-wave (cw) laser operation with Yb(15 at.%):Ca₄YO(BO₃)₃ (Yb:YCOB) exceeding 20 W of output-power in the thin disk laser setup.

50% of optical-to-optical efficiency at a slope efficiency of more than 60% were realized in E ∥ X-polarization. A tuning range of 95 nm with high output powers could be obtained.

Furthermore, applying the pinhole method the fluorescence lifetime was determined to be 2.2 µs.

The obtained results revealed that Yb:YCOB is a promising candidate for the generation of very short pulses at high pulse energies in the thin disk laser setup.