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Q: Fachverband Quantenoptik und Photonik

Q 20: Ultrashort Laser Pulses and Biophotonics

Q 20.4: Vortrag

Dienstag, 10. März 2020, 14:45–15:00, f435

Optical Kerr Gating with an ultrashort laser pulse — •Dominik Horstmann, Michael Stumpf, and Georg Pretzler — Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf

We implemented an Optical Kerr Gate with switching times on a fs-time scale using an ultrashort laser pulse from the Ti:Sa-laser system PHASER in Düsseldorf. Therefore, the laser pulse is split into an intense gate beam and a less intense signal beam that are focussed on the Kerr medium under a very small angle. While the gate-beam must be well characterized for reproducible operation of the gate, a wide range of optical pulses (intensities, spectral content) can be diagnosed this way. In order to optimize the Kerr Gate we investigated different Kerr media such as fused silica and tellurite glasses. Furthermore, different signal pulses were applied. We show that the arrangement works reliably over a large range of parameters.