Sumários
Spatial coherence – interferometric imaging
9 Março 2026, 14:00 • José Manuel Rebordão
Theorem of Van-Cittert-Zernike
Michelson stella interferometric and diameter of a
star
Basics of Interferometric imaging with arrays of
pupils / arrays.
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JWST
– James Webb Space Telescope
Spatial coherence
6 Março 2026, 09:00 • José Manuel Rebordão
Spatial coherence.
Young interferometer analysis.
Mutual coherence function and Complex Degree of
Mutual Coherence.
Young fringe visibility. Examples.
Decoupling spatial and temporal coherence.
Quasi-monochromatic condition.
Mutual intensity and Complex Coherence Factor.
Definition of spatial coherence, incoherence and
partial coherence.
Propagation of coherence functions, in particular
of Mutual Intensity.
Similitude between diffraction integrals and
coherence integrals, and between the different approximations
Theorem of Van-Cittert-Zernike
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Theorem
of Van-Cittert-Zernike and applications
Holography (class 2 of 3)
4 Março 2026, 17:00 • Bachar Wehbe
Introduction to practical
Holography, building objects.
Setup of a Denisyuk configuration,
consisting of a volume-reflection holography technique. As a recording medium,
a silver halide emulsion on a glass plate will be used (a matrix of cohesive
silver crystals in a transparent medium). During exposure, the reference wave
and the waves reflected from the object result in an interference structure
that was recorded within the emulsion.
Students produced their own
objects that will be exposed in a 50 mm x 50 mm plate.
Students performed several
exposures using different types of objects (including lenses or mirrors to
generate holographic optical elements known as HOE.
Holography (class 2 of 3)
4 Março 2026, 15:00 • Alexandre Pereira Cabral
Introduction to practical Holography, building objects.
Setup of a Denisyuk configuration, consisting of a volume-reflection holography technique. As a recording medium, a silver halide emulsion on a glass plate will be used (a matrix of cohesive silver crystals in a transparent medium). During exposure, the reference wave and the waves reflected from the object result in an interference structure that was recorded within the emulsion.
Students produced their own objects that will be exposed in a 50 mm x 50 mm plate.
Students performed several exposures using different types of objects (including lenses or mirrors to generate holographic optical elements known as HOE.
Analysis of non-holographic technics, bases on the Peper’s ghost concept, will be shown in the lab for analysis.Temporal coherence - applications
2 Março 2026, 14:00 • José Manuel Rebordão
Coherence time. Wave packets.
Fourier Transform Spectroscopy
METOP / IASI
Optical Coherence Tomography
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Spatial
Coherence