Characteristics of light reflected from a dense ionization wave with a tunable velocity

Abstract

An optically-dense ionization wave (IW) produced by two femtosecond laser pulses focused cylindrically and crossing each other is shown to be an efficient coherent x-ray converter. The resulting velocity of a quasi-plane IW in the vicinity of pulse intersection increases with the angle between the pulses from the group velocity of ionizing pulses to infinity allowing an easy tuning the wavelength of x-rays. The x-ray spectra of a converted, lower frequency coherent light change from the monochromatic to a high order harmonic-like with the duration of ionizing pulses and the intensity of scattered pulses; the spectrum are not symmetrical at V<c and V>c.

References in corpus (2)

• Relativistic Tennis with Photons: Demonstration of Frequency Upshifting by a Relativistic Flying Mirror through Two Colliding Laser Pulses
• Single-Cycle High-Intensity Electromagnetic Pulse Generation in the Interaction of a Plasma Wakefield with Nonlinear Coherent Structures

Cited by in corpus (5)

• Ionization waves of arbitrary velocity driven by a flying focus
• Nonlinear Plasma Wave in Magnetized Plasmas
• Controlling the generation of high frequency electromagnetic pulses with relativistic flying mirrors using an inhomogeneous plasma
• Interaction of Electromagnetic Radiation with Luminal Mirror
• Characterization of ionization injection in gas mixtures irradiated by sub-petawatt class laser pulses