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Title: Ionization Waves of Arbitrary Velocity

Journal Article · · Physical Review Letters

The flying focus is a technique in which a chirped laser beam is focused by a chromatic lens to produce an extended focal spot within which laser intensity can propagate at any velocity. If the intensity is above the ionization threshold of a background gas, an ionization wave will track the ionization threshold intensity isosurface as it propagates. We report on the demonstration of such ionization waves of arbitrary velocity. Subluminal and superluminal ionization fronts were produced, both forward- and backward-propagating relative to the ionizing laser. In conclusion, all backward and all superluminal cases mitigated the issue of ionization-induced refraction that typically challenges the formation of long, contiguous plasma channels.

Research Organization:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001944; SC0016253
OSTI ID:
1444062
Alternate ID(s):
OSTI ID: 1439740
Journal Information:
Physical Review Letters, Vol. 120, Issue 22; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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Cited By (8)

Optical space-time wave packets having arbitrary group velocities in free space journal February 2019
Flying focus: Spatial and temporal control of intensity for laser-based applications journal March 2019
Extremely high-aspect-ratio ultrafast Bessel beam generation and stealth dicing of multi-millimeter thick glass journal May 2019
Flying focus and its application to plasma-based laser amplifiers journal November 2018
Photon Acceleration in a Flying Focus journal September 2019
Control of laser light by a plasma immersed in a tunable strong magnetic field journal January 2019
Photon Acceleration in a Flying Focus text January 2019
Extremely high-aspect-ratio ultrafast Bessel beam generation and stealth dicing of multi-millimeter thick glass text January 2019

Figures / Tables (4)


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