English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The interaction of intense laser pulses with plasma mirrors has demonstratedthe ability to generate high-order harmonics, producing a bright source ofextreme ultraviolet (XUV) radiation and attosecond pulses. Here, we report anunexpected transition in this process. We show that the loss of spatio-temporalcoherence in the reflected high-harmonics can lead to a new regime ofhighly-efficient coherent XUV generation, with an extraordinary property wherethe radiation is directionally anomalous, propagating parallel to the mirrorsurface. With analytical calculations and numerical particle-in-cellsimulations, we discover that the radiation emission is due to laser-drivenoscillations of relativistic electron nanobunches which originate from a plasmasurface instability induced by collisionless absorption of the laser.

Anomalous Relativistic Emission from Self-Modulated Plasma Mirrors