Fiber chirped-pulse amplification system emitting 38 GW peak power

Eidam, Tino; Rothhardt, Jan; Stutzki, Fabian; Jansen, Florian; Hädrich, Steffen; Carstens, Henning; Jáuregui, César; Limpert, Jens; Tünnermann, Andreas

doi:10.1364/oe.19.000255

Cited by 248 publications

(115 citation statements)

References 17 publications

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“…22 A LPF with a 108-mm core diameter was used to scale the peak power of ultrafast fibre laser systems to nearly 4 GW. 27 Unfortunately, this experiment was disturbed by an avoided crossing that strongly deformed the fundamental mode of this fibre. However, based on recent experimental observations on thermal waveguide changes, 24 a further increase in the pulse energy and average output power should be possible.…”

Section: Resultsmentioning

confidence: 98%

Yb-doped large-pitch fibres: effective single-mode operation based on higher-order mode delocalisation

et al. 2012

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Rare earth-doped fibres are a diode-pumped, solid-state laser architecture that is highly scalable in average power. The performance of pulsed fibre laser systems is restricted due to nonlinear effects. Hence, fibre designs that allow for very large mode areas at high average powers with diffraction-limited beam quality are of enormous interest. Ytterbium-doped, rod-type, large-pitch fibres (LPF) enable extreme fibre dimensions, i.e., effective single-mode fibres with mode sizes exceeding 100 times the wavelength of the guided radiation, by exploiting the novel concept of delocalisation of higher-order transverse modes. The non-resonant nature of the operating principle makes LPF suitable for high power extraction. This design allows for an unparalleled level of performance in pulsed fibre lasers.

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Section: Resultsmentioning

confidence: 98%

Yb-doped large-pitch fibres: effective single-mode operation based on higher-order mode delocalisation

et al. 2012

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“…Recent results for CPA in fiber rods with pulse picking (lower repetition rate output pulse formats attained by only selecting 1 of every N pulses) have demonstrated 11 W of average power with 2.2 mJ pulse energies and < 500 fs pulses (Eidam et al, 2011). Systems with a very small amount of chirp (<100 ps) have been shown to achieve a few hundred nano-joules of pulse energy in <250 fs pulses with excellent pulse fidelity (Dawson et al, 2009).…”

Section: B State Of the Art For High Peak Power Lasersmentioning

confidence: 99%

Dielectric laser accelerators

England¹,

Noble²,

Bane³

et al. 2014

Rev. Mod. Phys.

331

184

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The use of infrared lasers to power optical-scale lithographically fabricated particle accelerators is a developing area of research that has garnered increasing interest in recent years. We review the physics and technology of this approach, which we refer to as dielectric laser acceleration (DLA). In the DLA scheme operating at typical laser pulse lengths of 0.1 to 1 ps, the laser damage fluences for robust dielectric materials correspond to peak surface electric fields in the GV/m regime. The corresponding accelerating field enhancement represents a potential reduction in active length of the accelerator between 1 and 2 orders of magnitude. Power sources for DLA-based accelerators (lasers) are less costly than microwave sources (klystrons) for equivalent average power levels due to wider availability and private sector investment. Due to the high laser-to-particle coupling efficiency, required pulse energies are consistent with tabletop microJoule class lasers. Combined with the very high (MHz) repetition rates these lasers can provide, the DLA approach appears promising for a variety of applications, including future high energy physics colliders, compact light sources, and portable medical scanners and radiative therapy machines.

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“…13 State-of-the-art grating-based stretchers lengthen femtosecond pulses up to several nanoseconds and have allowed fibre-based systems to produce pulse peak powers of up to 3.8 GW. 14 In principle, the stretched pulse duration could be further increased but in practice this parameter is limited to about 10 ns by the dimensions of the laser system and the available grating sizes.…”

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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Fiber chirped-pulse amplification system emitting 38 GW peak power

Cited by 248 publications

References 17 publications

Yb-doped large-pitch fibres: effective single-mode operation based on higher-order mode delocalisation

Yb-doped large-pitch fibres: effective single-mode operation based on higher-order mode delocalisation

Dielectric laser accelerators

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

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