Sumários
Physics Nobel 2023
27 Maio 2024, 14:00 • José Manuel Rebordão
The 2023 Physics Nobel – Attosecond pulses
and nanoscience.
Optical fibers and slab waveguides
24 Maio 2024, 09:00 • José Manuel Rebordão
Characteristic equation and its graphical
resolution. Modes : TE, TM and hybrid.
Normalised frequency, number of modes.
Base of functions. Couplings.
Slab waveguides: overview of
characteristics.
Losses in optical waveguides.
Dispersions in waveguides: material,
waveguide, total.
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Michelson interferometry (3 in 3)
22 Maio 2024, 15:00 • Alexandre Pereira Cabral
Setup of a Michelson
Interferometer (MI), using amplitude splitting, and analysis of the generated
interferograms in several configurations.
Usage of cube beam splitters and polarisation optics to control laser beam
polarization.
Assessment of how the MI can be used to measure relative displacements of one of the mirrors, using a piezo electric stage actuator to move one of the mirrors.
Analysis of several polarization optical elements (polarizers, polarizing beam splitters and wave plates) using a polarimeter (an instruments that measure the polarisation state of light).
Assembly of a homodyne quadrature detection configuration to achieve higher resolution compared to the previous simple homodyne detection.
Optical Fibers
20 Maio 2024, 14:00 • José Manuel Rebordão
Waveguides
implemented with parallel mirrors. TE and TM cases. Auto-consistency
conditions. Dispersion relation. Number of modes. Amplitude modes.
Overview
of optical communications. Fibers NA. Intermodal dispersion.
Cylindrical
waveguides: integration of Maxwell equations in step index fibers.
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CLASS
Cylindrical
waveguides.
ptical Waveguides
17 Maio 2024, 09:00 • José Manuel Rebordão
Optical
waveguides, in general. Functions. Couplings.
Waveguides
implemented with parallel mirrors – general.
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CLASS
Waveguides
implemented with parallel mirrors