Measuring Geometric Phase without Interferometry

T. Malhotra (1) , R. Gutiérrez-Cuevas (2) , J. Hassett (2) , M. r. R Dennis (3) , A. n. N Vamivakas (2) , Miguel Alonso (4)

1 University of Rochester [USA]
2 The Institute of Optics, University of Rochester
3 School of Physics and Astronomy [Birmingham]
4 MOSAIC - MOSAIC

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.

Mots clés: Pancharatnam phase; Berry Phase; Beams

Domaines: Optique [physics.optics]

T. Malhotra, R. Gutiérrez-Cuevas, J. Hassett, M. r. R Dennis, A. n. N Vamivakas, et al.. Measuring Geometric Phase without Interferometry. Physical Review Letters, 2018, 120 (23), ⟨10.1103/PhysRevLett.120.233602⟩. ⟨hal-01814153⟩