| I will review recent experimental results on the generation of isolated 130-as pulses, consisting of less than 1.2 periods of the central frequency, using the polarization gating technique in combination with few-cycle driving pulses with stable carrier-envelope phase. Such XUV radiation source lends itself as a tool to investigate basic electronic processes in a spectral range approaching the energy level of the outer-most electrons in atoms, molecules and solid state systems, and opens the way to a new regime in the applications of attosecond pulses, where a medium interacts with nearly single-cycle isolated attosecond pulses. Particular attention will be devoted to the analysis of the experimental techniques used for attosecond metrology, based on the conversion of the attosecond XUV field in an attosecond electron wavepacket by photo-ionization of a noble gas. Moreover, I will discuss an application of isolated attosecond pulses to the study of dynamics of electron wave-packets generated in Helium upon XUV ionization. |
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