Femtosecond fiber chirped- and divided-pulse amplification system

Zaouter, Yoann; Guichard, Florent; Daniault, Louis; Hanna, Marc; Morin, Franck; Hönninger, Clemens; Mottay, Eric; Druon, Frédéric; Georges, Patrick

doi:10.1364/ol.38.000106

Cited by 81 publications

(38 citation statements)

References 7 publications

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“…[25][26][27] Here, each pulse is split in time into a train of pulses via birefringent crystals or via a combination of beam splitters and free-space delay lines. Subsequently, the individual lower-intensity pulses are amplified and, finally, coherently temporally combined.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2014

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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.

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Section: Introductionmentioning

confidence: 99%

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

et al. 2014

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“…To achieve that one needs to amplify much longer pulses than are obtainable in a CPA approach. As a step in this direction a divided pulse amplification (DPA) technique has been proposed recently [4,5], which is based on pre-amplification spatial pulse-splitting and postamplification pulse-recombining. However, since it requires delay lines whose lengths increase exponentially with the number of pulse division stages, DPA technique appears to be limited to a relatively small number of pulses (approximately 10).…”

Section: The European Physical Journal Special Topicsmentioning

confidence: 99%

Resonant cavity based time-domain multiplexing techniques for coherently combined fiber laser systems

Zhou

Ruppe

Stanfield

et al. 2015

Eur. Phys. J. Spec. Top.

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Abstract. This paper describes novel time-domain multiplexing techniques that use various resonant cavity configurations for increasing pulse energy extraction per each parallel amplification channel of a coherently combined array. Two different techniques are presented: a so-called N 2 coherent array combining technique, applicable to a periodic pulse train, and a coherent pulse stacking amplification (CPSA) technique, applicable to a pulse burst. The first technique is a coherent combining technique, which achieves simultaneous beam combining and time-domain pulse multiplexing/down-counting using traveling-wave Fabry-Perot type resonators. The second technique is purely a timedomain pulse multiplexing technique, used with either a single amplifier or an amplifier array, which uses traveling-wave Gires-Tourmois type resonators.The importance of these techniques is that they can enable stacking of very large number of pulses, thus increasing effective amplified-pulse duration potentially by 10 2 to 10 3 times, and reducing fiber array size by the corresponding factor. This could lead to very compact coherently combined arrays even for generating very high pulse energies in the range of 1 to 100 J.

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“…These amplifiers can generate megawatts of peak power [14,15] and hundreds of watts in average power [16][17][18] using direct amplification and multi-gigawatts of peak power using chirped pulse amplification (CPA) [2,19] or combined with divided pulse amplification [20]. Recently, more than 500 W and 1.6 mJ from a CPA femtosecond system was demonstrated by coherent beam combining 4 individual femtosecond fiber amplifiers [21].…”

Section: Introductionmentioning

confidence: 99%

Photonic crystal fiber amplifiers for high power ultrafast fiber lasers

Alkeskjold¹,

Laurila²,

Weirich³

et al. 2013

Nanophotonics

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Abstract:In recent years, ultrafast laser systems using large-mode-area fiber amplifiers delivering several hundreds of watts of average power has attracted significant academic and industrial interest. These amplifiers can generate hundreds of kilowatts to megawatts of peak power using direct amplification and multi-gigawatts of peak power using pulse stretching techniques. These amplifiers are enabled by advancements in Photonic Crystal Fiber (PCF) design and manufacturing technology. In this paper, we will give a short overview of state-of-the-art PCF amplifiers and describe the performance in ultrafast ps laser systems.

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Femtosecond fiber chirped- and divided-pulse amplification system

Cited by 81 publications

References 7 publications

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

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

Resonant cavity based time-domain multiplexing techniques for coherently combined fiber laser systems

Photonic crystal fiber amplifiers for high power ultrafast fiber lasers

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