Key optical technologies, including lithography, data storage, optical tweezers, microscopy, and ultrafast laser materials processing, rely on strongly focused light beams. Such beams are often used to exploit a vectorial nature of light and so detailed knowledge of the field structure inside a tight focus becomes increasingly important. So far, theoretical studies of intra-focal optical field components have been mainly concentrated on spatially homogeneous states of light polarisation. In...[Show more]
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