Measuring geometric phase without interferometry

T. Malhotra, R. Gutiérrez-Cuevas, J. Hassett, M. R. Dennis, A. N. Vamivakas, M. A. Alonso

Research output: Contribution to journalArticle (Academic Journal)peer-review

28 Citations (Scopus)
297 Downloads (Pure)


A simple noninterferometric approach for probing the geometric phase of a structured Gaussian beam is proposed. Both the Gouy and Pancharatnam-Berry phases can be determined from the intensity distribution following a mode transformation if a part of the beam is covered at the initial plane. Moreover, the trajectories described by the centroid of the resulting intensity distributions following these transformations resemble those of ray optics, revealing an optical analogue of Ehrenfest's theorem associated with changes in the geometric phase.

Original languageEnglish
Article number233602
Number of pages5
JournalPhysical Review Letters
Issue number23
Publication statusPublished - 8 Jun 2018

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