A concept for multiterawatt fibre lasers based on coherent pulse stacking in passive cavities

Sven Breitkopf; Tino Eidam; Arno Klenke; Lorenz von Grafenstein; Henning Carstens; Simon Holzberger; Ernst Fill; Thomas Schreiber; Ferenc Krausz; Andreas Tünnermann; Ioachim Pupeza; Jens Limpert

doi:10.1038/lsa.2014.92

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A concept for multiterawatt fibre lasers based on coherent pulse stacking in passive cavities

Original Articles

- A concept for multiterawatt fibre lasers based on coherent pulse stacking in passive cavities
- Light: Science & Applications Vol. 3, Issue 4, (2014)
- Affiliations：
  
  1.Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, 07745 Jena, Germany
  2.Helmholtz Institute Jena, 07743 Jena, Germany
  3.Max Planck Institute of Quantum Optics, 85748 Garching, Germany
  4.Ludwig Maximilians University München, Department of Physics, 85748 Garching, Germany
  5.Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena, Germany
- Author bio：
  
  S Breitkopf, Friedrich-Schiller-Universität Jena, Institute of Applied Physics, Albert-Einstein-Straße 15, 07745 Jena, GermanyE-mail: sven.breitkopf@uni-jena.de
- Funds：
- DOI：10.1038/lsa.2014.92
  CLC：
- Published：2014-12，
  
  Published Online：10 October 2014，
  
  Received：11 April 2014，
  
  Revised：23 July 2014，
  
  Accepted：24 July 2014
- Accepted：
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Breitkopf, S. et al. A concept for multiterawatt fibre lasers based on coherent pulse stacking in passive cavities. Light: Science & Applications, 3, e211 (2014).
DOI：

Breitkopf, S. et al. A concept for multiterawatt fibre lasers based on coherent pulse stacking in passive cavities. Light: Science & Applications, 3, e211 (2014). DOI： 10.1038/lsa.2014.92.

摘要

Abstract

Since the advent of femtosecond lasers

performance improvements have constantly impacted on existing applications and enabled novel applications. However

one performance feature bearing the potential of a quantum leap for high-field applications is still not available: the simultaneous emission of extremely high peak and average powers. Emerging applications such as laser particle acceleration require exactly this performance regime and

therefore

challenge laser technology at large. On the one hand

canonical bulk systems can provide pulse peak powers in the multi-terawatt to petawatt range

while on the other hand

advanced solid-state-laser concepts such as the thin disk

slab or fibre are well known for their high efficiency and their ability to emit high average powers in the kilowatt range with excellent beam quality. In this contribution

a compact laser system capable of simultaneously providing high peak and average powers with high wall-plug efficiency is proposed and analysed. The concept is based on the temporal coherent combination (pulse stacking) of a pulse train emitted from a high-repetition-rate femtosecond laser system in a passive enhancement cavity. Thus

the pulse energy is increased at the cost of the repetition rate while almost preserving the average power. The concept relies on a fast switching element for dumping the enhanced pulse out of the cavity. The switch constitutes the key challenge of our proposal. Addressing this challenge could

for the first time

allow the highly efficient dumping of joule-class pulses at megawatt average power levels and lead to unprecedented laser parameters.

关键词

Keywords

cavity dumpingcavity enhancementcoherent pulse additionhigh average power and high peak powerultrafast lasers

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