Dresden 2020 – scientific programme

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O: Fachverband Oberflächenphysik

O 58: Poster Session - Ultrafast Electron Dynamics at Surface and Interfaces

O 58.6: Poster

Tuesday, March 17, 2020, 18:15–20:00, P2/2OG

Towards realtime analysis of charge transport using a THz-pump photoemission-probe experiment — •Hamed Abbasi, Ping Zhou, Martin Mittendorff, and Uwe Bovensiepen — Faculty of Physics, University of Duisburg - Essen, Lotharstr. 1, 47057 Duisburg, Germany.

Investigation of electron transport is of fundamental interest in the field of charge carrier dynamics. Real-time experimental access can be obtained by exploiting the THz light pulse in a pump-probe experiment [1]. Here we report on generation and optimization of the THz field by using a photoconductive antenna [2], with which we obtained a field with 400 V/m amplitude with the near-IR laser of energy per pulse 1.4 nJ. As next steps, we plan to increase the field by an order of magnitude by exploiting a laser with higher energy per pulse (4 µJ), and synchronize it with an ultrashort UV pulse for time-resolved angle-resolved photoemission spectroscopy.
We thank the German Research Foundation for funding through CRC 1242.
[1] J. Reimann et al. Nature 562, 396 (2018).
[2] A. Dreyhaupt et al. Applied Physics Letters 86, 121114 (2005).