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Gigahertz repetition rate mode-locked Yb:KYW laser using self-assembled quantum dot saturable absorber |
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| Authors: | Niels Meiser Kai Seger Valdas Pasiskevicius Hoon Jang Edik Rafailov Igor Krestnikov |
| Affiliation: | 1. Laser Physics, KTH-Royal Institute of Technology, AlbaNova Universitetscentrum, Roslagstullsbacken 21, SE 10691, Stockholm, Sweden 2. School of Engineering, Physics and Mathematics, University of Dundee, Dundee, DD1 4HN, UK 3. Innolume GmbH, Konrad-Adenauer-Allee 1, 44263, Dortmund, Germany |
| Abstract: | Fundamental mode-locking is achieved in a 1.036 GHz cavity using a semiconductor quantum dot saturable absorber mirror with a fast relaxation time component of down to 550 fs. The dispersive cavity delivers 1.7 ps wide pulses with spectra supporting sub-picosecond pulse durations and an M² of 1.3. An average output power of up to 339 mW at wavelengths around 1,032 nm is achieved and the saturable absorber’s damage threshold is identified as a limitation for further power scaling. |
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