275 W average output power from a femtosecond thin disk oscillator operated in a vacuum environment

We present an ultrafast thin disk laser that generates an average output power of 275 W, which is higher than any other modelocked laser oscillator. It is based on the gain material Yb:YAG and operates at a pulse duration of 583 fs and a repetition rate of 16.3 MHz resulting in a pulse energy of 16....

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Bibliographic Details
Published in:Optics express 2012-10, Vol.20 (21), p.23535-23541
Main Authors: Saraceno, Clara J, Emaury, Florian, Heckl, Oliver H, Baer, Cyrill R E, Hoffmann, Martin, Schriber, Cinia, Golling, Matthias, Südmeyer, Thomas, Keller, Ursula
Format: Article
Language:English
Subjects:
Amplifiers, Electronic
Energy Transfer
Equipment Design
Equipment Failure Analysis
Lasers
Miniaturization
Oscillometry - instrumentation
Vacuum
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Summary:We present an ultrafast thin disk laser that generates an average output power of 275 W, which is higher than any other modelocked laser oscillator. It is based on the gain material Yb:YAG and operates at a pulse duration of 583 fs and a repetition rate of 16.3 MHz resulting in a pulse energy of 16.9 μJ and a peak power of 25.6 MW. A SESAM designed for high damage threshold initiated and stabilized soliton modelocking. We reduced the nonlinearity of the atmosphere inside the cavity by several orders of magnitude by operating the oscillator in a vacuum environment. Thus soliton modelocking was achieved at moderate amounts of self-phase modulation and negative group delay dispersion. Our approach opens a new avenue for power scaling femtosecond oscillators to the kW level.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.20.023535