Generation of Extremely Short Pulses upon Excitation of a Resonant Medium by a Superluminal Light Spot |
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| Authors: | R M Arkhipov D O Zhiguleva A V Pakhomov M V Arkhipov I Babushkin N N Rosanov |
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| Institution: | 1.St. Petersburg State University,St. Petersburg,Russia;2.ITMO University,St. Petersburg,Russia;3.Heinrich Heine University,Düsseldorf,Germany;4.Vavilov State Optical Institute,St. Petersburg,Russia;5.Institute of Quantum Optics,Leibniz University Hannover,Hannover,Germany;6.Ioffe Physical Technical Institute,Russian Academy of Sciences,St. Petersburg,Russia |
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| Abstract: | The possibility of generation of quasi-unipolar extremely short pulses (with a duration of several periods of field oscillations) is theoretically analyzed for the excitation of a circular, nonlinear, and resonant medium with a light spot. The light spot rotates along a circle with a velocity that exceeds the speed of light in vacuum, while particles of the medium are distributed uniformly along the circle. It is shown that, by introducing a delay in the form of a phase plate into the system, one can control the shape, the duration, and the amplitude of generated pulses. |
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