Lehrende: Prof. Dr. rer. nat. Robert Stark
Veranstaltungsart: Vorlesung
Orga-Einheit: FB11 / Materialwissenschaft
Anzeige im Stundenplan: 11-01-3029-vl
Fach:
Anrechenbar für:
Semesterwochenstunden: 2
Unterrichtssprache: Englisch
Min. | Max. Teilnehmerzahl: - | -
Lehrinhalte: The lecture covers topics in materials optics and gives an overview on how to use light in order to characterize materials. Conventional light microscopy methods are discussed with respect to their applications in (bio)materials science. Theoretical and practical aspects of modern super-resolution techniques are discussed. Electromagnetic Waves at interfaces Electromagnetic waves Reflection and transmission: External reflection Reflection and transmission: Internal reflection Reflection and transmission: Frustrated total internal reflection (FTIR) Reflection and transmission: Total internal reflection microscopy Electromagnetic properties of materials The dielectric response The Lorentz model of dielectrics Drude‘s model for metals Birefringence Optical Anisotropy Anisotropic dispersion Uniaxial Materials Biaxial and other Materials Optical Activity, Electro Optics, and Magneto Optics Optical activity Electro-Optics Magneto-Optic Effects Paraxial Optics: Thin Lenses, Thick Lenses, and ABCD Formalism Curved mirrors Thin Lenses Thick Lenses ABCD Matrices Optical aberrations and stops Aberrations Stops in Optical Systems Optical devices Widefield Microscopy The compound microscope Resolution Bright field microscopy Dark field Phase contrast Differential Interference Contrast (DIC) Polarisation microscopy Fluorescence microscopy Confocal Microscopy The confocal principle Scanning The pinhole Airy Scanning Super resolution microscopy – Beating Abbe‘s limit 3-D methods based on nonlinear optical phenomena Common ideas 2-photon excitation Second harmonic generation 4Pi-microscopy: Looking at the specimen from both sides Structured illumination microscopy (SIM) Stimulated emission depletion (STED) microscopy Stochastic optical reconstruction microscopy (STORM) or (fluorescence) photoactivation localization microscopy ((F)PALM) Scanning nearfield optical microscopy (SNOM/NSOM) The basic idea Near field probes Aperture SNOM Scattering SNOM (s-SNOM) Raman Microscopy Raman Scattering Raman microscopy Symmetry of moleculatr vibrations Symmetry of phonon modes If time permits: Light Sources, Lasers and Coherence
Literatur: Eugene Hecht, Optics, Pearson, 5th Ed 2017 John Ferraro et al., Introductory Raman Spectroscopy, Academic Press, 2nd Ed. 2003 Jerome Mertz, Introduction to Optical Microscopy, Roberts and Co., 2009 Jörg Haus, Optische Mikroskopie: Funktionsweise und Kontrastierverfahren, Wiley-VCH 2014
Weitere Informationen: Outcomes Students understand the interaction of electromagnetic waves with ordered materials, in particular with non-isotropic materials in terms of polarization, electro- and magneto optics, optical activity and photon-phonon interaction. The student is able to design a simple optical device in order to perform optical measurements on materials, in terms of defining position and quality of lenses, filters, stops, mirrors, light sources and detectors. The student is able to handle a light microscope in order to achieve a homogenously exposed image with high contrast of typical specimen in (bio)materials science. The student understands the reason for Abbe’s resolution limit and knows how this limitation can be overcome in specific cases. The student is able to choose the appropriate super-resolution technique for a specific problem in (bio)materials science.
Online-Angebote: moodle