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Conferences > UP > 2014 > 08.Tue.B > 08.Tue.B.6

Terahertz STM for Imaging Ultrafast Nanoscale Dynamics

Tyler L. Cocker, Vedran Jelic, James R. Hoffman, Manisha Gupta, Reginald Miller, Sean J. Molesky, Jacob A. J. Burgess, Glenda De Los Reyes, Lyubov V. Titova, Ying Y. Tsui, Mark R. Freeman, and Frank A. Hegmann

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Abstract

We couple terahertz (THz) pulses to the tip of a scanning tunneling microscope (STM) and observe THz-pulse-induced tunneling in an STM, enabling a new ultrafast technique called THz-STM that allows for direct imaging of sub-picosecond dynamics on surfaces with nanometer spatial resolution. Imaging of sub-picosecond carrier capture dynamics into a single semiconductor nanodot is demonstrated. The potential of THz-STM for imaging ultrafast phenomena with atomic resolution is discussed.

© 2014 Optical Society of America

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