Spatial Properties of High-Order Harmonic Beams from Plasma Mirrors: A Ptychographic Study
- Univ. Paris-Saclay, Gif-sur-Yvette (France). LIDYL, CEA, CNRS
- Univ. Paris-Saclay, Gif-sur-Yvette (France). LIDYL, CEA, CNRS; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Spatial properties of high-order harmonic beams produced by high-intensity laser-matter interactions carry rich information on the physics of the generation process, and their detailed understanding is essential for applications of these light beams. We present a thorough study of these properties in the case of harmonic generation from plasma mirrors, up to the relativistic interaction regime. In situ ptychographic measurements of the amplitude and phase spatial profiles of the different harmonic orders in the target plane are presented, as a function of the key interaction parameters. Further, these measurements are used to validate analytical models of the harmonic spatial phase in different generation regimes, and to benchmark ultrahigh-order Maxwell solvers of particle-in-cell simulation codes.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); European Research Council (ERC); LASERLABEUROPE; European Union (EU); Agence Nationale de la Recherché (ANR); European Commission (EC)
- Grant/Contract Number:
- AC02-05CH11231; 694596; 654148; ANR-14-CE32-0011; 624543
- OSTI ID:
- 1544364
- Alternate ID(s):
- OSTI ID: 1399289
- Journal Information:
- Physical Review Letters, Vol. 119, Issue 15; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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