Scheme for a coherently controlled pulsed electron gun
نویسندگان
چکیده
When the outer electron of an alkali atom in an electric field is laser excited just above the field-induced ionization threshold, the electron ejection will not be instantaneous. Calculations show there are a number of energy regions where, upon short-pulse laser excitation, the atom will eject a train of electron probability pulses with the pulses being nearly equally spaced in time. This system can be the source of a picosecond pulsed electron gun. We show that it is possible to coherently control the electron pulse frequency while the pulse train is being emitted. © 1998 Optical Society of America [S0740-3224(98)03201-9] OCIS codes: 030.1640, 320.5550, 140.3460.
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