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Effective super-bandwidth in laser pulses
preprintposted on 2023-01-11, 23:03 authored by Enrique G. Neyra, Demian A. Biasetti, Pablo Vaveliuk, Gustavo A. Torchia, Fabian Videla, Marcelo F. Ciappina, Lorena Rebón
We present here a theoretical analysis of the interaction between an ideal two-level quantum system and a super-oscillatory pulse, like the one proposed and successfully synthesized in https://doi.org/10.1088/2040-8986/abfedf and arXiv:2106.09192. As a prominent feature, these pulses present a high efficiency of the central super-oscillatory region in relation to the unavoidable side-lobes. Besides, our study shows an increase of the effective bandwidth of the pulse, in the super-oscillatory region, and not only the appearance of a local frequency higher than its highest Fourier-frequency component, as in the usual description of the phenomenon of super-oscillations. Beyond introducing the concept of effective super-bandwidth, the presented results could be relevant for experimental applications and opening new perspectives for laser-matter interaction.