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Vacuum space charge effect in laser-based solid-state photoemission spectroscopy

Journal Article · · Journal of applied physics
OSTI ID:980909

We report a systematic measurement of the space charge effect observed in the few-ps laser pulse regime in laser-based solid-state photoemission spectroscopy experiments. The broadening and the shift of a gold Fermi edge as a function of spot size, laser power, and emission angle are characterized for pulse lengths of 6 ps and 6 eV photon energy. The results are used as a benchmark for an N-body numerical simulation and are compared to different regimes used in photoemission spectroscopy. These results provide an important reference for the design of time and angle-resolved photoemission spectroscopy setups and next-generation light sources.

Research Organization:
Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
Sponsoring Organization:
Materials Sciences Division
DOE Contract Number:
AC02-05CH11231
OSTI ID:
980909
Report Number(s):
LBNL-2946E
Journal Information:
Journal of applied physics, Journal Name: Journal of applied physics Journal Issue: 1 Vol. 107; ISSN JAPIAU; ISSN 0021-8979
Country of Publication:
United States
Language:
English

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