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arXiv · 1605.02516

Enhanced high-order harmonic generation from periodic potentials in inhomogeneous laser fields

Tao-Yuan Du·Zhong Guan·Xiao-Xin Zhou·Xue-Bin Bian
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Abstract

We theoretically study high-order harmonic generation (HHG) from solid-phase systems in spatially inhomogeneous strong laser fields originated by resonant plasmons within a metallic nanostructure. The intensity of the second plateau in HHG may be enhanced by two-three orders and be comparable with the intensity of the first plateau. This is due to bigger transition probabilities to higher conduction bands. It provides us a practical way to increase the yields of HHG with laser intensity below the damage threshold. It presents a promising way to triple the range of HHG spectra in experimental measurements. It also allows to generate intense isolated attosecond pulse from solids driven by few-cycle laser fields.

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Tao-Yuan Du, Zhong Guan, Xiao-Xin Zhou, Xue-Bin Bian. 2016-05-09. Enhanced high-order harmonic generation from periodic potentials in inhomogeneous laser fields. https://doi.org/10.1103/physreva.94.023419

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