Attosecond Photoemission Spectroscopy on Surfaces and Interfaces

Johann Riemensberger, Max Planck Institute for Quantum Optics
Event Date and Time: 
Thu, 2015-04-23 14:00 - 15:00
Hennings 318
Local Contact: 
Sarah Burke
Intended Audience: 

The confinement of an excitation or interrogation pulse below one femtosecond now allows the direct observation of electronic motion in atoms and even solids on the atomic scales of time and length. One most fundamental effect of light-matter interaction is photoemission. Attosecond streaking spectroscopy allows to measure the relative time the arrival of photoexcited electrons at the solid-vacuum interface with precision on the 10 as level. These experiments allow hitherto unknown insight into the nature of microscopic electronic transport and excitation at solid state surfaces. The combination of attosecond streaking spectroscopy with techniques well known from surface science, such as the preparation of atomically thin adsorbate systems, allows the extension of the measurement of photoemission towards absolute timing of the photoemission process. In this talk I will present our recent results on energy dependent relative and absolute photoemission time delays in tungsten. Further I will present our ongoing efforts on extension of attosecond streaking spectroscopy towards the investigation of electronic excitation and interfacial charge transfer in atomic and molecular adsorbates.

Website development by Checkmark Media. Designed by Armada.

a place of mind, The University of British Columbia

Faculty of Science
Department of Physics and Astronomy
6224 Agricultural Road
Vancouver, BC V6T 1Z1
Tel 604.822.3853
Fax 604.822.5324

Emergency Procedures | Accessibility | Contact UBC | © Copyright The University of British Columbia