Multiple-harmonic conversion of 1064 nm radiation in rare gases

Ferray, M.; L’Huillier, Anne; Li, X F; Lompré, L. A.; Mainfray, G.; Manus, C.

doi:10.1088/0953-4075/21/3/001

Cited by 1,471 publications

(844 citation statements)

References 17 publications

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“…Hence, it is not surprising that improved laser output parameters have repeatedly extended the range of applications or even opened up novel opportunities. 1,2 Today, ultrafast laser systems are considered as unique tools for many industrial and scientific applications, the latter one being an incubator for seminal discoveries and new technologies. One of these emerging applications is laser-wakefield particle acceleration.…”

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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“…When a gas of atoms or molecules is subjected to a strong laser field, high-order harmonic generation (HHG) takes place [1]. This process converts many of the laser photons into a single high-frequency photon in the extreme ultraviolet (XUV) or soft x-ray regime.…”

Section: Introductionmentioning

confidence: 99%

Two-center interference and ellipticity in high-order harmonic generation fromH2+

Zwan

Lein

2010

Phys. Rev. A

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We present a theoretical investigation into the two-center interference in aligned H + 2 . The influence of the laser field on the recombination step is investigated by comparing laser-induced harmonic generation with harmonic generation from field-free collisions of Gaussian wave packets with the core. We find that for different Gaussian wave packets colliding with the molecule, the interference minimum occurs at the same alignment angle. The same result is obtained for the laser-induced spectrum when only a single electronic trajectory per harmonic contributes. When multiple electronic trajectories contribute, we find an effect on the minimum position because the interference between short and long trajectories is alignment dependent. The two-center interference and the influence of the Coulombic potential are clearly seen not only in the harmonic intensity and phase but also in the polarization direction and ellipticity. We observe significant ellipticity of the emitted radiation around the two-center interference minimum.

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“…Work on these sources has undergone continuous development since then even including a seeding option (3). High harmonics of optical lasers were also taking hold around that time as sources of coherent EUV radiation (4,5). Indeed, harmonics up to very high order have been generated from solids in recent times (6).…”

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confidence: 99%

Operation of a free-electron laser from the extreme ultraviolet to the water window

et al. 2007

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We report recent results on the performance of FLASH (Free Electron Laser in Hamburg) operating at a wavelength of 13.7 nm where unprecedented peak and average powers for a coherent EUV radiation source have been measured. In the saturation regime the peak energy approached 170 µJ for individual pulses while the average energy per pulse reached 70 µJ. The pulse duration was in the region of 10 femtoseconds and peak

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Multiple-harmonic conversion of 1064 nm radiation in rare gases

Cited by 1,471 publications

References 17 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

Two-center interference and ellipticity in high-order harmonic generation fromH2+

Operation of a free-electron laser from the extreme ultraviolet to the water window

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