Sumários
Nonlinear optics
7 Março 2025, 09:00 • José Manuel Rebordão
2nd order nonlinear effects, OFC, OPA,
OPO, SPDC.
Types of phase matching. A very reference to
coupled-waves theory and of its typical outcomes.
Brief overview of the importance of SPDC to optical
qubits.
Third order effects: optical Kerr effect,
self-phase modulation (SPM), self-focusing, filamentation.
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Raman gain, 4 wave mixing, conjugated phase
mirrors, photo-refractive materials.
Third order effects: spectral broadening,
supercontinuum; four wave mixing, holography, phase-conjugated mirrors.
Overview: parametric and non-parametric effects,
virtual states.
BIBLIOGRAPHY
Saleh
Concepts of Plasmonics. Nonlinear optics
28 Fevereiro 2025, 09:00 • José Manuel Rebordão
Materials: double positive, single and double
negative: characterization and main properties.
Surface waves and plasmons in boundaries between
DPS and SNG materials. Quasiparticles. Single plasmons polaritons (SPP). SPASERS.
Applications of plasmons on metrology (biological quantities).
Negative materials / metamaterials: some ideas on
their engineering. Refraction in boundaries to SNG materials.
Nonlinear optics: Duffing model and its relation to
harmonics generation. General concepts. Equations. Born iterative models.
Second order effects: general concepts.
Rectification and second harmonic generation.
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2nd
order effects: electrooptics, wave mixing. Phase matching. Spontaneous downs conversion. 3rd
order effects
Holography (class 1 of 3)
26 Fevereiro 2025, 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 1 of 3)
26 Fevereiro 2025, 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.Optics of metals
24 Fevereiro 2025, 14:00 • José Manuel Rebordão
Dielectric materials – conclusion.
Conductive materials: Ohm law, Maxwell equations
for a monochromatic wave, equivalent permittivity. Drude model
Optics of metals. Models for conductivity. Plasma
frequency. Interpretation of the optical constants below and above the plasma
frequency. Colour of metals.
Second-order effects: SHG, rectification and the
electrooptics.
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Plasmonic
concepts. Nonlinear optics