Speaker: Oren Pedatzur, Weizmann Institute
Program Description
One of the main challenges in attosecond science is the temporal characterization
of the XUV field. Current characterization methods are based on
nonlinear light matter interactions and are limited in terms of the minimal
required intensity, stability and waveform complexity. I will describe an experimental
demonstration of a conceptually new linear and all-optical pulse characterization
method, inspired by double blind holography. Holography is realized
by measuring the XUV spectra of two unknown attosecond signals and their
interference. Assuming a finite pulse duration constraint, we reconstruct the
missing spectral phases and characterize the unknown signals for both single
isolated pulses and pulse trains. This method can be readily extended
to any interference based measurement scheme, including polarization measurement,
two-sources and multi-orbital contributions, enabling the study of
complex electron dynamics.
