Surface-enhanced high-harmonic generation: a promising approach for extreme ultraviolet frequency combs |
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| Authors: | Wu Jian Qi Hongxing Zeng Heping |
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| Institution: | State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai, China. jwu@phy.ecnu.edu.cn |
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| Abstract: | We propose a promising scheme to produce extreme ultraviolet frequency combs through high-harmonic generation with a surface-enhanced optical field. High harmonics are generated in a wavelength-scale spatial region and show a noticeable emission probability at an angle around 10 degrees relative to the surface. This can be further controlled with an additional static electric field or polarization-gated scheme, leading to enhanced energy conversion efficiency and extra even-order harmonic generation. |
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