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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

An optical response of one-dimensional string made of dipoles with aperiodically varying density excited by a spot of light moving along the stringat the superluminal (sub-luminal) velocity is theoretically studied. TheCherenkov radiation in such system is rather unusual, possessing both transientand resonant character. We show that under certain conditions, in addition tothe resonant Cherenkov peak another Doppler-like frequency appears in theradiation spectrum. Both linear (small-signal) and nonlinear regimes as well asdifferent string topologies are considered.

Transient Cherenkov radiation from an inhomogeneous string excited by an ultrashort laser pulse at superluminal velocity