Journal
JOURNAL OF OPTICS
Volume 18, Issue 3, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2040-8978/18/3/035703
Keywords
image forming and processing; polarization; optical vortices
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Funding
- National Natural Science Foundation of China [11074116, 11274158, 11474156, 11530046]
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We propose to use a super-structured waveplate (called an S-waveplate) for vectorial optical vortex filtering, and experimentally demonstrate the radial Hilbert transform and selective edge enhancement. Based on the Jones calculus of polarization states and Fourier analysis, we calculate and analyze the point spread function of an optical 4-f system including an S-waveplate filter having the vectorial vortex of topological charge 1 (TC = 1). Numerical simulations and optical experiments demonstrate that a vectorial optical vortex filter can be used to implement selective edge enhancement with an analyzer before the output plane. The edge enhancement can be obtained even when the center of the filter is off-axis or the illuminating light is non-monochromatic.
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