Attosecond kinetics of photoexcited Germanium

• DOI: 10.1364/cleo_qels.2017.fm1d.4
• Publication Date: 2017-05-08T16:09:51Z
• Authors: Peter M. Kraus; Christopher J. Ka...; Michael Zuerch; Hung-Tzu Chang; Marieke F. Jager; Scott K. Cushing; Lauren J. Borja; Daniel M. Neumark; Stephen R. Leone
• Keywords: 0211 other engineering and technologies; 02 engineering and technology

Attosecond transient reflectivity is developed to observe the photoexcitation dynamics in germanium. Attosecond time-resolved measurements of the dielectric function reveal a few-femtosecond collective electronic response time, which renormalizes the Coulomb interaction between the excited carriers.