The northern part of North China is located where the Paleo-Asian domain is superposed by the Pa-leo-Pacific domain. The period from the end of the Late Paleozoic to the beginning of the Mesozoic is important for the ...The northern part of North China is located where the Paleo-Asian domain is superposed by the Pa-leo-Pacific domain. The period from the end of the Late Paleozoic to the beginning of the Mesozoic is important for the superposition of the two domains. It is demonstrated according to the coupling of the superficial and deep geological effects that in this period begins the lithosphere modulation, hot interface uprising, and crust extension in this area. Thus a new understanding about the Indo-China movement has arisen.展开更多
Increasing simultaneously both the cutoff energy and efficiency is a big challenge to all applications of high-order harmonic generation(HHG).For this purpose,the shaping of the waveform of driving pulse is an alterna...Increasing simultaneously both the cutoff energy and efficiency is a big challenge to all applications of high-order harmonic generation(HHG).For this purpose,the shaping of the waveform of driving pulse is an alternative approach.Here,we show that the harmonic cutoff can be extended by about two times without reducing harmonic yield after considering macroscopic propagation effects,by adopting a practical way to synthesize two-color fields with fixed energy.Our results,combined with the experimental techniques,show the great potential of HHG as a tabletop light source.展开更多
基金Project supported by the National Natural Science Foundation of China
文摘The northern part of North China is located where the Paleo-Asian domain is superposed by the Pa-leo-Pacific domain. The period from the end of the Late Paleozoic to the beginning of the Mesozoic is important for the superposition of the two domains. It is demonstrated according to the coupling of the superficial and deep geological effects that in this period begins the lithosphere modulation, hot interface uprising, and crust extension in this area. Thus a new understanding about the Indo-China movement has arisen.
基金Supported by the National Natural Science Foundation of China under Grant Nos.11264036,11164025,11364038the Specialize Research Fund for the Doctoral Program of Higher Education of China under Grant No.20116203120001the Basic Scientific Researc Foundation for Institution of Higher Learning of Gansu Province
文摘Increasing simultaneously both the cutoff energy and efficiency is a big challenge to all applications of high-order harmonic generation(HHG).For this purpose,the shaping of the waveform of driving pulse is an alternative approach.Here,we show that the harmonic cutoff can be extended by about two times without reducing harmonic yield after considering macroscopic propagation effects,by adopting a practical way to synthesize two-color fields with fixed energy.Our results,combined with the experimental techniques,show the great potential of HHG as a tabletop light source.
