Spectral analog of the gouy phase shift

Esben Ravn Andresen, Christophe Finot, Dan Oron, Hervé Rigneault

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


We demonstrate the existence of the spectral phase shift a pulse experiences when it is subjected to spectral focusing. This π2 phase shift is the spectral analog of the Gouy phase shift a 2D beam experiences when it crosses its focal plane. This spectral Gouy phase shift is measured using spectral interference between a reference pulse and a negatively chirped parabolic pulse experiencing spectral focusing in a nonlinear photonic crystal fiber. To avoid inherent phase instability in the measurement, both reference and parabolic pulses are generated with a 4-f pulse shaper and copropagate in the same fiber. We measure a spectral phase shift of π2, reaffirming its generality as a consequence of wave confinement in the spatial, temporal and spectral domains.

Original languageEnglish
Article number143902
JournalPhysical review letters
Issue number14
Publication statusPublished - Apr 3 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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