Progress in optical-field-ionization soft X-ray lasers at LOA

Mocek, Tomáš; Sebban, S.; Bettaïbi, I.; Zeitoun, Philippe; Faivre, G; Cros, B.; Maynard, G.; Butler, Alison; McKenna, Claire; Spence, David J.; Gonsavles, A.J.; Hooker, S. M.; Vorontsov, V.A.; Hallou, S.; Fajardo, M.; Kazamias, S.; Pape, S. Le; Mercère, Pascal; Morlens, Anne-Sophie; Valentin, C.; Balcou, Philippe

doi:10.1017/s0263034605050500

Cited by 8 publications

(2 citation statements)

References 18 publications

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“…Another decrease of an order of the magnitude is caused by surface irregularities. Similar focusing system was already in use at Le Laboratoire d'Optique Appliquée (LOA) [17]. The hole causes mainly power decrease, but has very limited influence on observed beam quality.…”

Section: Discussionmentioning

confidence: 99%

Optical simulations of laser focusing for optimization of laser betatron

et al. 2017

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This work presents optical simulations that are used to design a betatron driven by a short-pulse laser based on the Laser Wakefield Acceleration (LWFA) concept. These simulations explore how the optical setup and its components influence the performance of the betatron. The impact of phase irregularities induced by optical elements is investigated. In order to obtain a good estimate of the future performance of this design a combination of two distinct techniques are used -Field Tracing for optical simulations employing a combination of the Zemax and VirtualLab computational platforms for the laser beam propagation and focusing with the given optical system and particle-in-cell simulation (PIC) for simulating the short-pulse laser interaction with a gas target. The result of the optical simulations serves as an input for the PIC simulations. Application of Field Tracing in combination with the PIC for the purposes of high power laser facility introduces the new application for VirtualLab Fusion. Based on the result of these simulations an alternative design with a hole in the final folding mirror coupled with a spherical focusing mirror is considered in favour of more commonly used off-axis parabola focusing setup. Results are demonstrating, that the decrease of the irradiance due to the presence of the central hole in the folding mirror is negligible (9.69 × 10 19 W/cm 2 for the case without the hole vs. 9.73 × 10 19 W/cm 2 for the case with hole). However, decrease caused by the surface irregularities (surface RMS λ/4, λ/20 and λ/40) is more significant and leads to the poor performance of particle production. K: Accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics); Beam Optics 1Corresponding author.

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Section: Discussionmentioning

confidence: 99%

Optical simulations of laser focusing for optimization of laser betatron

et al. 2017

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“…Gain studies and accurate wavelength measurement of lasing have been investigated (Enright et al, 1991;Rosen et al, 1985;Zhang et al, 1996;Warwick et al, 1998;Burge et al, 1997;Lewis et al, 1992;Kodama et al, 1994;Yuan et al, 1996;Mocek et al, 2005). Gain studies and accurate wavelength measurement of lasing have been investigated (Enright et al, 1991;Rosen et al, 1985;Zhang et al, 1996;Warwick et al, 1998;Burge et al, 1997;Lewis et al, 1992;Kodama et al, 1994;Yuan et al, 1996;Mocek et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

High resolution X-ray emission spectra from picosecond laser irradiated Ge targets

et al. 2007

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Investigations of a high resolution X-ray emission spectrum in the range 0.66-0.75 nm obtained by irradiating a Germanium target with high-power p-polarized, 40 picosecond laser radiation at 532 nm wavelength was done. Spectra in the wavelength region of 2l-4l 0 and 2l-5l 0 L-shell transitions in F-like, Ne-like and Na-like germanium ions were recorded using the FSSR-2D spectrometer equipped with a spherically bent quartz crystal with a spectral resolution l/Dl better than 5000. Spectral lines were compared with theoretical values obtained using the LANL plasma kinetic code ATOMIC. Fair agreement between experimental and theoretical spectral lines has been observed, which allowed to measure enough high bulk electron temperature values of 560 eV and electron density of $10 21 cm 23 in Ge plasma irradiated by rather small commercial high repetition rate Nd:YAG laser system.

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Wave Packet Molecular Dynamics to study atom electrons in strong fields

Lenglet

Maynard

2007

Nuclear Instruments and Methods in Physics Research Section A:

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Progress in optical-field-ionization soft X-ray lasers at LOA

Cited by 8 publications

References 18 publications

Optical simulations of laser focusing for optimization of laser betatron

Optical simulations of laser focusing for optimization of laser betatron

High resolution X-ray emission spectra from picosecond laser irradiated Ge targets

Wave Packet Molecular Dynamics to study atom electrons in strong fields

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