Abstract
Harmonics reflected from an oscillating plasma mirror doesn’t subject to the limitation of maximum applied laser intensity and can thus exploit the benefit of state-of-the-art terawatt and petawatt laser technology, enabling a route to extreme bright attosecond light sources [1]. When the pulse duration decreases to two laser cycles, intensity gating can lead to an isolated attosecond pulse [2]. This harmonic generation process features a high nonlinearity, resulting in a high conversion efficiency [3,4]. In our recent work, an efficiency higher than 10−4 was measured in the wavelength range 17nm to 80nm by using a 28fs Ti:Sapphire laser operating at a peak intensity of 4×1018 W/cm2 (a≈1.5) [4].
© 2013 IEEE
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