Diffraction-limited coherent wake emission

E. Porat, H. Yehuda, I. Cohen, A. Levanon, I. Pomerantz

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The plasma mirror is a relativistic optical element that under certain irradiation conditions generates intense attosecond extreme-ultraviolet light pulses, in a process known as coherent wake emission (CWE). CWE has been previously characterized by its high spatial divergence, originating from an intrinsic intensity-dependent phase accumulation. In this Letter, we show that the transverse variations of the plasma expansion can completely cancel the CWE intrinsic phase. Accordingly, we experimentally demonstrate nearly diffraction-limited CWE with unprecedented divergence, under 6 mrad. We validate our analytical model with particle in cell simulations. This understanding facilitates the development of plasma mirrors as applicable ultraviolet light sources.

Original languageEnglish
Article numberL032059
JournalPhysical Review Research
Volume3
Issue number3
DOIs
StatePublished - 1 Sep 2021
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy

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