Speaker
Takashi Tanaka
(RIKEN SPring-8 Center)
Description
Recent advancements in FEL science and technologies have made it possible to generate attosecond pulses in many FEL facilities by means of various methods. Such "attosecond FELs" definitely contribute to the progress of ultrafast science, by improving the temporal resolution in time-resolved measurements; however, we should recall that human desires are limitless! The next target may probably be the realization of "zeptosecond FELs", which is in principle possible by reducing the pulse length of angstrom FELs ultimately down to a few cycles. In this talk, I will review the theoretical and experimental studies carried out to realize ultrashort and few-cycle FELs together with the prospectives toward the zeptosecond FELs.
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Author
Takashi Tanaka
(RIKEN SPring-8 Center)