Chromatism compensation of the PETAL multipetawatt high-energy laser

Néauport, Jérôme; Blanchot, N.; Rouyer, C.; Sauteret, C.

doi:10.1364/ao.46.001568

Cited by 41 publications

(18 citation statements)

References 23 publications

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“…prisms or gratings. One of the most elementary couplings of higher order, that typically results from propagation in lenses, is known as Pulse Front Curvature (PFC) in the nearfield, and Longitudinal Chromatism (LC) in the far-field [21][22][23][24][25][26][27]. To the best of our knowledge, there is at present no identified scheme to take advantage of this low-order coupling, despite its simplicity.…”

Section: Introductionmentioning

confidence: 99%

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings

Sainte-Marie¹,

Gobert²,

Quéré³

2017

Optica

167

103

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Due to their broad spectral width, ultrashort lasers provide new possibilities to shape light beams and control their properties, in particular through the use of spatio-temporal couplings. In this context, we present a theoretical investigation of the linear propagation of ultrashort laser beams that combine temporal chirp and a standard aberration known as longitudinal chromatism. When such beams are focused in a vacuum, or in a linear medium, the interplay of these two effects can be exploited to set the velocity of the resulting intensity peak to arbitrary values within the Rayleigh length, i.e. precisely where laser pulses are generally used. Such beams could find groundbreaking applications in the control of laser-matter interactions, in particular for laser-driven particle acceleration.

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Section: Introductionmentioning

confidence: 99%

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings

Sainte-Marie¹,

Gobert²,

Quéré³

2017

Optica

167

103

View full text Add to dashboard Cite

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“…Longitudinal chromatic aberration in the planoconvex lenses introduces radial group delay [9,10] that, if not corrected, would increase the duration of the compressed pulse from <20 fs to more than 100 fs. A number of techniques have been demonstrated to compensate for this spatiotemporal aberration [11][12][13] . For this system, an ultrabroadband radial group-delay compensator has been developed that uses two plano-concave lenses located before the NOPA5 amplifier in an Offner imaging system to reduce the radial group delay to <2 fs [14] .…”

Section: Mtw Opal Overviewmentioning

confidence: 99%

Technology development for ultraintense all-OPCPA systems

Bromage

Bahk

Begishev

et al. 2019

High Pow Laser Sci Eng

135

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Optical parametric chirped-pulse amplification (OPCPA) [Dubietis et al., Opt. Commun. 88, 437 (1992)] implemented by multikilojoule Nd:glass pump lasers is a promising approach to produce ultraintense pulses (>10 23 W/cm 2 ). Technologies are being developed to upgrade the OMEGA EP Laser System with the goal to pump an optical parametric amplifier line (EP OPAL) with two of the OMEGA EP beamlines. The resulting ultraintense pulses (1.5 kJ, 20 fs, 10 24 W/cm 2 ) would be used jointly with picosecond and nanosecond pulses produced by the other two beamlines. A midscale OPAL pumped by the Multi-Terawatt (MTW) laser is being constructed to produce 7.5-J, 15-fs pulses and demonstrate scalable technologies suitable for the upgrade. MTW OPAL will share a target area with the MTW laser (50 J, 1 to 100 ps), enabling several joint-shot configurations. We report on the status of the MTW OPAL system, and the technology development required for this class of all-OPCPA laser system for ultraintense pulses.

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“…Many laser systems operate at a very low repetition rate or have much shot-to-shot jitter and so require singleshot diagnostics. Unfortunately, most single-shot pulsemeasurement techniques monitor the laser output either temporally or spatially only, and independent spatial and temporal measurements fail to capture possible spatiotemporal distortions [58,[64][65][66][67][68][69][70][71][72] because diagnostic devices for measuring the temporal behavior of the pulse usually integrate over the spatial transverse coordinates, and vice-versa.…”

Section: Measuring Complex Pulses In Time and Space On A Single Shot:mentioning

confidence: 99%

Simple devices for measuring complex ultrashort pulses

Trebino

Bowlan

Gabolde

et al. 2009

Laser & Photonics Reviews

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We describe experimentally simple, accurate, and reliable methods for measuring from very simple to potentially very complex ultrashort laser pulses. With only a few easily aligned components, these methods allow the measurement of a wide range of pulses, including those with time-bandwidth products greater than 1000 and those with energies of only a few hundred photons. In addition, two new, very simple methods allow the measurement of the complete spatio-temporal intensity and phase of even complex pulses on a single shot or at a tight focus.Side views of an ultrashort laser pulse focusing in the presence of spherical aberration and group-velocity dispersion (GVD) and measured by Pamela Bowlan using SEA TADPOLE. In the nine snapshots, the color indicates the actual pulse color vs. space and time before and after the focus. The white dots represent the pulse-front (the highest intensity for a given transverse coordinate). The fringes in the beam before the focus are due to spherical aberration, and the rainbow-like appearance is due to the GVD. A short pre-history of ultrashort-laser-pulse measurementIn the 1960s, researchers began generating laser pulses shorter than could be measured using electronic detectors, and the field of ultrashort-laser-pulse measurement was born. How to measure humankind's shortest events? The goal was (and still is) to measure the pulse electric field vs. time, that is, its intensity, I(t), and phase, φ(t):or, equivalently, in the frequency domain, the pulse spectrum, S(ω), and spectral phase, ϕ(ω):Ẽomitting the negative-frequency component of the pulse. In principle, a shorter event is necessary to make the measurement. But clearly no such event was available. Researchers quickly realized that the shortest event available was the event itself. Thus autocorrelation [1] was born. Autocorrelation involved splitting the pulse into two, spatially overlapping the two pulses in some instantaneously responding nonlinear-optical medium, such as a secondharmonic-generation (SHG) crystal (See Fig. 1), and variably delaying one pulse with respect to the other. A SHG crystal produces light at twice the frequency of the input

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Chromatism compensation of the PETAL multipetawatt high-energy laser

Cited by 41 publications

References 23 publications

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings

Technology development for ultraintense all-OPCPA systems

Simple devices for measuring complex ultrashort pulses

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