1. Application of harmonics imaging to focal spot measurements of the "PETAL" laser.
- Author
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Raffestin, D., Boutoux, G., Blanchot, N., Batani, D., D'Humières, E., Moreno, Q., Longhi, T., Coïc, H., Granet, F., Rault, J., Liberatore, C., Jakubowska, K., and Tikhonchuk, V.
- Subjects
LASERS ,IMAGING systems ,COMPUTER simulation - Abstract
By using numerical simulations and experimental campaigns on a small-scale laser facility, the concept of the focal spot imaging on harmonics of laser frequency is developed and implemented on the Laser MegaJoule (LMJ)/PETawatt Aquitaine Laser (PETAL) facility. The Two/Three ω Imaging System was activated and validated during the first 2017–2019 interaction campaigns of PETAL on the LMJ. It provides major information on focal spot characteristics on a target. Such an approach could be easily applied to any high-intensity facility in the relativistic intensity regime (>10
18 W cm−2 ). [ABSTRACT FROM AUTHOR]- Published
- 2019
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