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Updated: Feb 8, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Measuring Geometric Phase without Interferometry
T Malhotra1,2, R Gutiérrez-Cuevas2,3, J Hassett2,3
1Department of Physics, University of Rochester, Rochester, New York 14627, USA.
Abstract:
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.
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