Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 45: Ultrashort Laser Pulses I
Q 45.7: Vortrag
Donnerstag, 3. März 2016, 12:30–12:45, a310
Full characterization of few-cycle pulses using cross-polarized wave generation d-scan technique — •Ayhan Tajalli1, David Zuber1, Bruno Chanteau1, Martin Kretschmar1, Heiko Kurz1, Milutin Kovacev1, Uwe Morgner1,2, and Tamas Nagy1,3 — 1Institut Für Quantenoptik, Leibniz Universität Hannover, 30167 Hannover — 2Laserzentrum Hannover e.V., 30419 Hannover — 3Laser Laboratorium Göttingen e.V., 37077 Göttingen
Femtosecond pulse sources are considered as backbone of various fields of fundamental studies and applications e.g. strong field physics, time-resolved optical microscopy and micro-machining. This technology requires the ability for full characterization of the ultrashort pulses. Different techniques such as FROG or SPIDER have been devised in last decades for this purpose; however, they suffer from rather complex setups or accurate calibrations. Here, we demonstrate a new version of dispersion scan (d-scan) pulse characterization scheme for phase retrieval of ultrashort optical pulses based on cross-polarized wave (XPW) generation nonlinearity. Degenerate four wave mixing process relaxes the phase matching constraints and hence is applicable for extremely wide wavelength range. We fully characterize 7-15 fs pulses in the near-IR region delivered from spectrally broadened amplified pulses in a noble gas-filled hollow-core fiber and compare the results with a state of the art FROG characterization device.