Showing papers by "Giovanni Pierattini published in 1995"
ARCO1
TL;DR: In this paper, a new design of interferometer which makes use of a reflective-type diffraction grating is developed, which is easy to align and compact and it is suitable for measuring the refractive indices of transparent materials.
46 citations
01 Jan 1995
TL;DR: In this paper, an optical heterodyne polarization interferometer is described for the precision measurement of the change in the state of polarization of a light wave induced by polarizing optical devices.
Abstract: We describe an optical heterodyne polarization interferometer that can be efficiently used for the precision measurement of the change in the state of polarization of a light wave induced by polarizing optical devices. This technique is used to measure the change with wavelength of the phase retardation of a quarter-wave plate. A theor- etical derivation is presented to permit computation of the wavelength dependence of the phase shift induced by a quarter-wave plate.
4 citations
ARCO1
TL;DR: In this article, an optical heterodyne polarization interferometer was proposed for the precision measurement of the change in the state of polarization of a light wave induced by polarizing optical devices.
Abstract: We describe an optical heterodyne polarization interferometer that can be efficiently used for the precision measurement of the change in the state of polarization of a light wave induced by polarizing optical devices. This technique is used to measure the change with wavelength of the phase retardation of a quarter-wave plate. A theoretical derivation is presented to permit computation of the wavelength dependence of the phase shift induced by a quarter-wave plate.
4 citations
ARCO1
TL;DR: In this article, the light propagation in a LC nonlinear planar waveguide is studied for both TE and TM polarization states of incident light, and the experimental results show that the guided modes are affected by the incident light power.
Abstract: The light propagation in a LC nonlinear planar waveguide is studied for both TE and TM polarization states of incident light. Two different nematic liquid crystal samples were employed with hybrid alignment in a special guiding structure ad hoc realized for this work. The experimental results show that the guided modes are affected by the incident light power. In particular, the power exchange of the propagating light between different modes was studied in detail.
3 citations
TL;DR: In this article, a simple general method for particle tracking and velocity field determination from the reconstruction of holographic images is reported, and a preliminary experimental application is reported. But this method is limited to the case of holograms.
Abstract: A simple general method is reported for particle tracking and velocity field determination from the reconstruction of holographic images. A preliminary experimental application is reported.
3 citations
TL;DR: In this paper, an optical heterodyne polarization interferometer is described that can be efficiently used for the precision measurement of the phase shift induced by polarizing optical devices, which can be used to measure the change with wavelength of a quarter-wave plate's retardation.
Abstract: An optical heterodyne polarization interferometer is described that can be efficiently used for the precision measurement of the phase shift induced by polarizing optical devices. This technique is used to measure the change with wavelength of a quarter-wave plate's retardation.