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Journal Articles Journal of Modern Optics Year : 2005

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.
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hal-00574216 , version 1 (07-03-2011)



Katalin Varjú, Y. Mairesse, B. Carre, M. B. Gaarde, P. Johnsson, et al.. Frequency chirp of harmonic and attosecond pulses. Journal of Modern Optics, 2005, 52 (2 & 3), pp.379 - 394. ⟨10.1080/09500340412331301542⟩. ⟨hal-00574216⟩
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