Hannover 2010 – wissenschaftliches Programm
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K: Fachverband Kurzzeitphysik
K 6: Poster
K 6.6: Poster
Donnerstag, 11. März 2010, 16:30–19:00, Lichthof
Unique phase retrieval of ultrafast optical fields — •Karsten Sperlich1, Birger Seifert2, and Heinrich Stolz1 — 1Institut für Physik, Universität Rostock, D-18051 Rostock, Germany — 2Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago 22, Chile
A self-referencing technique for measuring amplitude and phase of ultrashort laser pulses is presented. In contrast to other methods the relative-phase ambiguities do not appear in our method. Thus, we can characterize ultrashort pulses with well-separated frequency components. The relative-phase ambiguities can be avoided by the use of a cross-correlation technique with two independent laser pulses. Further we propose and demonstrate experimentally a new real-time phase-retrieval algorithm that reconstructs both pulses fast and uniquely. Beyond that we give details about the used multi shot setup and our new concept of a single shot setup.