Bochum 2002 – wissenschaftliches Programm

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K: Kurzzeitphysik

K 4: Kurzzeitphysik-Poster

K 4.2: Poster

Mittwoch, 20. März 2002, 17:40–18:40, HZO 80

Femtosecond Michelson interferometry: basic analysis and measurement interpretation — •Vasily V. Temnov^1,2, Klaus Sokolowski-Tinten¹, and Dietrich von der Linde¹ — ¹Institute for Laser and Plasma Physics, University of Essen, 45117, Essen, Germany — ²Institute of Applied Physics RAS, 603600, Nizhny Novgorod, Russia

A simple and robust setup for time- and space-resolved Michelson interferometry is presented, which is capable of measuring very small transient phase ( 3x10-2 rad) and amplitude changes ( 2 percent) with femtosecond temporal and micrometer lateral spatial resolution. The high measurement accuracy is achieved by using a 2D-Fourier transform reconstruction technique for interferogram processing. The aspects of optical image formation and processing as well as the physical interpretation of interferometric measurements are discussed.