Corkscrew point spread function for far-field three-dimensional nanoscale localization of pointlike objects.


We describe the corkscrew point spread function (PSF), which can localize objects in three dimensions throughout a 3.2 μm depth of field with nanometer precision. The corkscrew PSF rotates as a function of the axial (z) position of an emitter. Fisher information calculations show that the corkscrew PSF can achieve nanometer localization precision with… (More)
DOI: 10.1364/OL.36.000202


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