Ionization waves of arbitrary velocity driven by a flying focus
Journal Article
·
· Physical Review A
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Laboratory for Laser Energetics, University of Rochester
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
A chirped laser pulse focused by a chromatic lens exhibits a dynamic, or flying, focus in which the trajectory of the peak intensity decouples from the group velocity. In a medium, the flying focus can trigger an ionization front that follows this trajectory. By adjusting the chirp, the ionization front can be made to travel at an arbitrary velocity along the optical axis. For this study, we present analytical calculations and simulations describing the propagation of the flying focus pulse, the self-similar form of its intensity profile, and ionization wave formation. The ability to control the speed of the ionization wave and, in conjunction, mitigate plasma refraction has the potential to advance several laser-based applications, including Raman amplification, photon acceleration, high-order-harmonic generation, and THz generation.
- Research Organization:
- Univ. of Rochester, NY (United States)
- Sponsoring Organization:
- New York State Energy Research and Development Authority (NYSERDA); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
- Grant/Contract Number:
- NA0001944; SC0016253
- OSTI ID:
- 1432173
- Alternate ID(s):
- OSTI ID: 1426515
- Report Number(s):
- 1390; 2017--257; 2017-257, 1390, 2348
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 3 Vol. 97; ISSN PLRAAN; ISSN 2469-9926
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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