Journal
OPTICS EXPRESS
Volume 23, Issue 14, Pages 17845-17859Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.017845
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Funding
- Russian Foundation for Basic Research [13-07-00266, 14-07-31079 mol_a]
- Ministry of Education and Science of Russian Federation
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We suggest vortex phase elements to detect the polarization state of the focused incident beam. We analytically and numerically show that only the types of polarization (linear, circular, or cylindrical) can be distinguished in the low numerical aperture (NA) mode. Sharp focusing is necessary to identify the polarization state in more detail (direction or sign). We consider a high NA micro-objective and a diffractive axicon as focusing systems. We show that the diffractive axicon more precisely detects the polarization state than does the micro-objective with the same NA. (C) 2015 Optical Society of America
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