Heidelberg 2015 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 62: Poster: Quantum Optics and Photonics III

Q 62.84: Poster

Thursday, March 26, 2015, 17:00–19:00, C/Foyer

Frequency-Resolved Optical Gating: Multiple Pulse Reconstruction and Error Treatment — •Alexander Hause and Fedor Mitschke — Universität Rostock, Institut für Physik, Universitätsplatz 3, 18051 Rostock

Frequency-resolved optical gating (FROG) is the most established method to assess the amplitude-and-phase profiles of ultrashort laser pulses. Second harmonic generation (SHG) FROG is the most widely used version. However, for some complex pulse shapes it tends to produce false results. Here we discuss the reconstruction of multiple pulse structures, a situation in which SHG FROG frequently fails. We suggest a modification of the standard procedure and demonstrate that the rate of false results is significantly reduced. We also discuss reconstruction in the presence of noise. A procedure to obtain error bars is given; they allow to gauge the quality of the reconstruction.