Parts | Days | Selection | Search | Downloads | Help
Q: Fachverband Quantenoptik und Photonik
Q 46: Ultrakurze Laserpulse (Erzeugung II / Anwendungen I)
Q 46.9: Talk
Thursday, March 13, 2008, 16:00–16:15, 3H
High Harmonics Generation (HHG) from water droplets. — •Jan Henneberger, Nico Franke, Sebastian Jung, Christian Ott, and Christian Spielmann — Physikalisches Institut, Universität Würzburg, Am Hubland, 97074 Würzburg
We experimentally study the interaction of ultrashort intense laser radiation with water microdroplets. In order to do this we build up a droplet source in a vacuum chamber, which allows us to produce liquid droplets with 30 µm diameter. We observe the HHG spectrum generated by a two pulse scheme.
The HHG from molecules can be used to see fast nuclear dynamics in molecules. We exploit that the harmonic spectrum is temporally chirped. As a result each harmonic order is emitted at a different time and therefore it is possible to map frequency to a recollision time. In particular, by comparing the spectrum of two isotopes, information about the vibration dynamics can be obtained. We compare the high harmonic spectrum from H2O and D2O. First measurements of the spectrum of this isotopes will be presented.