Free-Space Optical Sensing Using Vector Beam Spectra

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Publication Date: 3/21/2025

Event: Complex Light and Optical Forces XIX (Conference 13393), Photonics West, SPIE

Reference: pp. 1-6, 2025

Authors: Giovanni Milione, NEC Laboratories America, Inc.; Sarper Ozharar, NEC Laboratories America, Inc.; Jian Fang, NEC Laboratories America, Inc.; Philip N. Ji, NEC Laboratories America, Inc.; Ting Wang, NEC Laboratories America, Inc.

Abstract: Vector beams are spatial modes that have spatially inhomogeneous states of polarization. Any light beam is a linear combination of vector beams, the coefficients of which comprise a vector beam “spectrum.” In this work, through numerical calculations, a novel method of free-space optical sensing is demonstrated using vector beam spectra, which are shown to be experimentally measurable via Stokes polarimetry. As proof of concept, vector beam spectra are numerically calculated for various beams and beam obstructions.

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