Eismann, J. S. et al. Absolute characterization of high numerical aperture microscope objectives utilizing a dipole scatterer. Light: Science & Applications, 10, 2342-2348 (2019).
DOI:
Eismann, J. S. et al. Absolute characterization of high numerical aperture microscope objectives utilizing a dipole scatterer. Light: Science & Applications, 10, 2342-2348 (2019). DOI: 10.1038/s41377-021-00663-x.
Absolute characterization of high numerical aperture microscope objectives utilizing a dipole scatterer
Measuring the aberrations of optical systems is an essential step in the fabrication of high precision optical components. Such a characterization is usually based on comparing the device under investigation with a calibrated reference object. However
when working at the cutting-edge of technology
it is increasingly difficult to provide an even better or well-known reference device. In this manuscript we present a method for the characterization of high numerical aperture microscope objectives
functioning without the need of calibrated reference optics. The technique constitutes a nanoparticle
acting as a dipole-like scatterer
that is placed in the focal volume of the microscope objective. The light that is scattered by the particle can be measured individually and serves as the reference wave in our system. Utilizing the well-characterized scattered light as nearly perfect reference wave is the main idea behind this manuscript.
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