Polarimetry is the measurement and analysis of the polarization of light. It involves studying how light waves oscillate in different directions, helping to characterize the light’s properties. Polarimetry is used in various fields such as chemistry, biology, and physics to analyze materials, determine molecular structures, study atmospheric properties, and investigate celestial bodies. It plays a crucial role in enhancing our understanding of light and its interactions with matter.

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Free-Space Optical Sensing Using Vector Beam Spectra

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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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