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Title: Ionization waves of arbitrary velocity driven by a flying focus

Abstract

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.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Research Org.:
Univ. of Rochester, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); USDOE National Nuclear Security Administration (NNSA); New York State Energy Research and Development Authority (NYSERDA)
OSTI Identifier:
1432173
Alternate Identifier(s):
OSTI ID: 1426515
Report Number(s):
2017-257; 1390
Journal ID: ISSN 2469-9926; PLRAAN; 2017-257, 1390, 2348
Grant/Contract Number:  
NA0001944; SC0016253
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review A
Additional Journal Information:
Journal Volume: 97; Journal Issue: 3; Journal ID: ISSN 2469-9926
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; laser-plasma interactions; light propagation, transmission and absorption; multiphoton or tunneling ionization and excitation; plasma ionization

Citation Formats

Palastro, J. P., Turnbull, D., Bahk, S. -W., Follett, R. K., Shaw, J. L., Haberberger, D., Bromage, J., and Froula, D. H. Ionization waves of arbitrary velocity driven by a flying focus. United States: N. p., 2018. Web. doi:10.1103/PhysRevA.97.033835.
Palastro, J. P., Turnbull, D., Bahk, S. -W., Follett, R. K., Shaw, J. L., Haberberger, D., Bromage, J., & Froula, D. H. Ionization waves of arbitrary velocity driven by a flying focus. United States. doi:10.1103/PhysRevA.97.033835.
Palastro, J. P., Turnbull, D., Bahk, S. -W., Follett, R. K., Shaw, J. L., Haberberger, D., Bromage, J., and Froula, D. H. Thu . "Ionization waves of arbitrary velocity driven by a flying focus". United States. doi:10.1103/PhysRevA.97.033835. https://www.osti.gov/servlets/purl/1432173.
@article{osti_1432173,
title = {Ionization waves of arbitrary velocity driven by a flying focus},
author = {Palastro, J. P. and Turnbull, D. and Bahk, S. -W. and Follett, R. K. and Shaw, J. L. and Haberberger, D. and Bromage, J. and Froula, D. H.},
abstractNote = {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.},
doi = {10.1103/PhysRevA.97.033835},
journal = {Physical Review A},
issn = {2469-9926},
number = 3,
volume = 97,
place = {United States},
year = {2018},
month = {3}
}

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Free Publicly Available Full Text
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Cited by: 6 works
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