Allgemeines Physikalisches Kolloquium im Wintersemester 2012/2013
Ort: 48149 Münster, Wilhelm-Klemm-Str. 10, IG I, HS 2,
Zeit: Donnerstag, 29.11.2012 16:00 Uhr c.t.
Kolloquiums-Kaffee ab 15:45 Uhr vor dem Hörsaal
Talbot Focusing: A new effect for realizing unconventional lens arrays
Prof. Dr. Karl-Heinz Brenner, Universität Heidelberg, Technische Informatik
Self imaging is a well known effect of periodic structures since its discovery by William Talbot, almost two centuries ago. Talbot focusing is a newly discovered effect, which allows to violate the Abbe relation between numerical aperture (NA) and focal spot size. Thus, e.g. micro-lens arrays with very long working distance and high NA are possible. The talk gives a short reminder of Talbot imaging and then presents the theory of Talbot focusing and some applications of this effect, including a new type of scanning microscope and a new alternative to digital holographic microscopy.
Einladende: Prof. Dr. Cornelia Denz
Im Auftrag der Hochschullehrer des Fachbereichs Physik
Prof. Dr. Nikos Doltsinis