Chirped imaging pulses in four-dimensional electron microscopy: femtosecond pulsed hole burning
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- Chirped imaging pulses in four-dimensional electron microscopy: femtosecond pulsed hole burning
- Park, Sang Tae; Kwon, Oh Hoon; Zewail, Ahmed H.
- Issue Date
- IOP PUBLISHING LTD
- NEW JOURNAL OF PHYSICS, v.14, no.5, pp.1 - 22
- The energy and time correlation, i.e. the chirp, of imaging electron pulses in dispersive propagation is measured by time-slicing (temporal hole burning) using photon-induced near-field electron microscopy. The chirp coefficient and the degree of correlation are obtained in addition to the duration of the electron pulse and its energy spread. Improving temporal and energy resolutions by time-slicing and energy-selection is discussed here and we explore their utility in imaging with time and energy resolutions below those of the generated ultrashort electron pulse. Potential applications for these imaging capabilities are discussed.
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