Direct Classic Route of Generating Mono-Color EM-Pulse with Attosecond-Level Duration

Direct Classic Route of Generating Mono-Color EM-Pulse with Attosecond-Level Duration

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Current conception of attosecond pulse is based on Fourier optics and refers cecily rose oilers to an electromagnetic pulse with a broad, homogeneous weight Fourier spectrum.Its preparation/generation is along an indirect route in which the output of commercial available μ m-level wavelength laser is “processed„ by elaborately designed optics medium allowing high-order harmonics effect to change its Fourier spectrum to be of a flat high-frequency tail.Such an indirect, quantum scheme is limited by its efficiency in high-order harmonics generation.

For higher efficiency, other routes for the same goal, i.e., light pulse with an attosecond-level duration, deserve to be tried.

The method proposed is a direct, classic scheme.It is to directly control the time duration of classic electrons doing acceleration/deceleration in a feasible, creta girl half wig elaborately-designed driving DC fields configuration.The duration can be adjusted by initial electrons velocity, geometric dimension of driving field configuration.

The maximum strength of a generated pulse is controlled by the number of electrons.The frequency of a generated pulse is controlled by initial electrons position in the configuration.The shortest duration of single pulse can be down to sub-attosecond-level according to currently available minimum geometric dimension of driving field and suitable gesture of electrons entering into the driving field configuration.

This work displays a feasible, direct, classic route of achieving EM pulse with an attosecond-level duration.In particular, the pulse is mono-color, rather than a superposition of Fourier components with nearly-equal weight.