Frequency chirp of harmonic and attosecond pulses

• We study the phase of the atomic polarization in the process of high-order harmonic generation. Its dependence on the laser intensity and the harmonic order induce a frequency variation in time (chirp) respectively of the harmonic pulses and attosecond pulses. We review the recent experimental results on the temporal characterization of the harmonic emission and show that measurements performed using very different techniques (like XFROG and RABITT), probing the phase in different parameter spaces, can be connected through the mixed phase derivatives, demonstrating the common underlying physics

Ämnesord

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Nyckelord

parameter spaces

frequency variation

temporal characterization

frequency chirp

harmonic pulses

atomic polarization phase

attosecond pulses

high-order harmonic generation

harmonic order

laser intensity

harmonic emission

Publikations- och innehållstyp

art (ämneskategori)

ref (ämneskategori)