Abstract

Increasing the complexity and the control of different degrees of freedom (DoF’s) of a light beam is beneficial for advancing research and technology. Vector beams, i.e. beams that are fully polarized but have a spatially varying polarization structure, correlate two DoFs, i.e. space and polarization. This correlation can be used in various applications such as microscopy, sensing, pulse shaping, or quantum optics [1]. Recently, we showed that a spectral vector beam, i.e. a beam correlating frequency and polarization, can be used for high-speed spectroscopy by simply measuring polarization [2]. Here, we present spatio-spectral vector fields, which are light fields with a varying polarization structure in space as well as frequency (see Fig. 1 a).

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