Polarization singularities are superpositions of orbital angular momentum (OAM) states in
orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the …

Speckle patterns are a powerful tool for high-precision metrology because they enable
remarkable performance in relatively simple setups. Nonetheless, researchers in this field …

Polarization singularities are superpositions of orbital angular momentum (OAM) states in
orthogonal circular polarization basis. The intrinsic OAM of light beams arises due to the …

As an alternative to correlation-based techniques widely used in conventional speckle
metrology, we propose a new technique that makes use of phase singularities in the …

A new technique for displacement measurement is proposed that makes use of phase
singularities in the complex signal generated by a Laguerre-Gauss filter operation applied to …

Nanophotonics deals with the diffraction of light from objects with nanoscale features. This
book addresses cutting-edge problems in the field of nanophotonics as well as a wide …

Interference of optical beams with optical vortices is often encountered in singular optics.
Since interferometry makes the phase observable by intensity measurement, it brings out a …

Speckle metrology is a powerful tool in the measurement of wavelength and spectra.
Recently, speckle produced by multiple reflections inside an integrating sphere has been …

We have analyzed the diffraction of a plane wave and a vortex beam on a circular micro-
aperture in the near field (a few wavelengths away from the source) using different models …

We report on a new method of inspecting deep microstructures manufactured in transparent
media. Although their lateral dimension (tens of microns) do not exceed the diffraction limit …