Abstract

Typical XUV pulse intensity required to produce nonlinear processes is of the order of 10¹²–10¹⁴ W/cm² [1], which can be achieved by increasing the energy of the XUV pulses and/or by decreasing the corresponding spot size in the target region. Additional requirements are the following: (i) use of a setup characterized by a sufficiently long exit arm, while maintaining a compact size, in order to accommodate different experimental devices in the target region; (ii) generation of two XUV pulse replica, with adjustable temporal delay (accuracy of the order of 10 as).

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