Improving attosecond pulse reflection by large angle incidence for a periodic multilayer mirror in the extreme ultraviolet region

Abstract

The improvement of attosecond pulse reflection by large angle incidence for a periodic multilayer mirror in the extreme ultraviolet region has been discussed. Numerical simulations of both spectral and temporal reflection characteristics of periodic multilayer mirrors under various incident angles have been analyzed and compared. It was found that the periodic multilayer mirror under a larger incidence angle can provide not only higher integrated reflectivity but also a broader reflection band with negligible dispersion, making it possible to obtain better a reflected pulse that has a higher pulse reflection efficiency and shorter pulse duration for attosecond pulse reflection. In addition, by increasing the incident angle, the promotion of attosecond pulse reflection capability has been proven for periodic multilayer mirrors with arbitrary layers.

Design of broadband reflective quarter-wave plates in the water window region based on aperiodic Cr/Sc multilayer mirrors

“…It is difficult for the traditional periodic Cr/Sc multilayer mirror to form a large reflection phase delay. 28 Compared with periodic structures, aperiodic multilayer mirrors can achieve more powerful spectral and phase control capabilities due to their richer design parameters, 29 such as realizing broadband applications in water window microscopy. Reflection 30 and dispersion compensation and pulse compression were applied to water window attosecond pulses.…”

Effects of dispersion and filtering induced by periodic multilayer mirrors reflection on attosecond pulses

“…[13] However, these requirements are hard to meet for a periodic multilayer mirror, due to its dispersion and filtering effects on the incident attosecond pulse, which can lead to pulse broadening and pulse energy loss. Although temporal pulse responses of periodic Mo/Si multilayer mirrors have been studied for years, [14][15][16][17][18] the effects of dispersion and filtering induced by Mo/Si multilayer mirrors reflection on attosecond pulses have not been investigated so far.…”