Atomic, Molecular, and Optical Physics Seminar/Attosecond
Quantum Dynamics Seminar
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Date & Time : Feb 26, 2019, 14:00-16:00
Place
: Bldg. E6-529
Poster :
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14:00-15:00
FREE DISCUSSION (E6-529)
15:00-16:00
Speaker :
Marcelo Fabian Ciappina,ELI Beamlines Project Division, The Czech Academy of Sciences
Title :
Attosecond Physics at the Nanoscale: the ultimate frontier
Polarization analysis of high harmonic generation in crystalline
solids : Abstract:
Recently two, a priori, different branches of physics have started
to merge. One is attosecond physics, that deals with, both
theoretical and experimentally, the phenomena which take place
when ultrashort laser pulses, with durations ranging from the
attosecond to the femtosecond time scale, interact with atoms,
molecules or solids. The laser-induced electron dynamics occurs
natively at an attosecond time scale, where e.g. the period of a classical electron in a
hydrogen atom is 152 as, and consequently, the underlying physics
requires tools employing attosecond time resolution (both in
theory and experiments). This subject has reached great maturity
on the basis of well-established theoretical developments and the
understanding of different nonlinear phenomena, as well as thanks
to the formidable advances in experimental techniques. Nowadays,
for instance, measurements with attosecond precision are routinely
performed in several facilities around the world. The second branch involves
the manipulation and engineering of mesoscopic systems, e.g.
solids, metals, dielectrics, with nanometric precision, a scale
that was only reached recently. In this way, it is possible to
design and build bulk matter samples which pave the way to study
light-matter interaction in a completely new regime. In this seminar Ifll
summarize the theoretical work we have done to tackle the
underlying physics of laser-matter processes driven by spatially
and temporal synthesized fields, with a main emphasis in
above-threshold ionization (ATI) and high-order harmonics
generation (HHG) in atoms and molecules induced by plasmonic
fields.
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Toru Morishita,UEC