We show that it is feasible to generate sub-40-attosecond pulses with near-infrared few-cycle pulses centered at 800 nm.With proper gating technique,super-broadband continuum spectrum extending from 50 eV to above 200...We show that it is feasible to generate sub-40-attosecond pulses with near-infrared few-cycle pulses centered at 800 nm.With proper gating technique,super-broadband continuum spectrum extending from 50 eV to above 200 eV can be obtained,and the intrinsic atto-chirp can be satisfactorily compensated with C filter,producing isolated attosecond pulses with duration of 33 as.According to the wavelength scaling law of high-order harmonic generation,the proposed scheme is of great significance to develop high-flux ultrashort attosecond sources.展开更多
基金supported by the National Key Research and Development Program of China(Grant No.2019YFA0307703)the National Natural Science Foundation of China(Grant Nos.12234020 and 11974426)。
文摘We show that it is feasible to generate sub-40-attosecond pulses with near-infrared few-cycle pulses centered at 800 nm.With proper gating technique,super-broadband continuum spectrum extending from 50 eV to above 200 eV can be obtained,and the intrinsic atto-chirp can be satisfactorily compensated with C filter,producing isolated attosecond pulses with duration of 33 as.According to the wavelength scaling law of high-order harmonic generation,the proposed scheme is of great significance to develop high-flux ultrashort attosecond sources.
