ETH News and NCCR MUST Highlight
Electrons at the speed limit - Elektronen am Tempolimit: Attosecond dynamical Franz-Keldysh effect in Polycrystalline diamond
How fast can electrons ultimately be controlled with electric fields? An important question for the petahertz electronics of the future.
We have a long-term research effort within the NCCR MUST to explore how fast we can move electrons in materials. Such measurements became possible because in 1999 we successfully learned to stabilize electric fields at petahertz frequencies (i.e. 1000 times a terahertz or a million times a gigahertz) underneath a short pulse envelope. This enabled not only attosecond pulse generation but was also a key enabler for the frequency comb revolution.
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