activity
20212026
most citedX-ray free-electron lasing in a flying-focus undulator

1 citations · 1 across the 8 of their papers we have counts for

collaborators

8 papers

hep-ph2026

Enhancement of nonlinear pair production in a flying-focus pulse

Md Reshad Ur Rahman, Martin S. Formanek, Elias Gerstmayr +3

A photon can decay into an electron-positron pair in the presence of an intense laser pulse by a process known as nonlinear Breit-Wheeler pair production (NBWPP). For a sufficientl…

physics.optics2026

Experimental demonstration of Flying-Focus enhanced Thomson scattering

E. Gerstmayr, C. Mariani, R. Fitzgarrald +23

We report the experimental demonstration of a spatiotemporally engineered "Flying-Focus" laser pulse for enhanced x-ray generation in relativistic Thomson scattering. A combination…

physics.optics2026

A Reduced Action Integral for Photon-Photon Interactions in Vacuum

D. Ramsey, M. S. Formanek, J. P. Palastro

Electromagnetic waves propagating through vacuum can polarize virtual electron-positron pairs; this polarization, in turn, nonlinearly modifies their propagation. A semi-classical…

hep-ph2025

Enhanced quantum radiation with flying-focus laser pulses

Martin S. Formanek, John P. Palastro, Dillon Ramsey +1

The emission of a photon by an electron in an intense laser field is one of the most fundamental processes in electrodynamics and underlies the many applications that utilize high-…

physics.plasm-ph2024★ 1 cited

X-ray free-electron lasing in a flying-focus undulator

D. Ramsey, B. Malaca, T. T. Simpson +5

Laser-driven free-electron lasers (LDFELs) replace magnetostatic undulators with the electromagnetic fields of a laser pulse. Because the undulator period is half the wavelength of…

hep-ph2024

Radiation by a laser-driven flying-focus electron wave packet

Antonino Di Piazza, Martin Formanek, Dillon Ramsey +1

An exact solution of the Dirac equation in the presence of an arbitrary electromagnetic plane wave is found, which corresponds to a focused electron wave packet, with the focus of…

quant-ph2024

Superluminal matter waves

J. P. Palastro, D. Ramsey, M. Formanek +2

The Dirac equation has resided among the greatest successes of modern physics since its emergence as the first quantum mechanical theory fully compatible with special relativity. T…

hep-ph2021

Radiation Reaction Enhancement in Flying Focus Pulses

Martin Formanek, Dillon Ramsey, John P. Palastro +1

Radiation reaction (RR) is the oldest still-unsolved problem in electrodynamics. In addition to conceptual difficulties in its theoretical formulation, the requirement of exceeding…