Photoluminescence Properties of Thin-Film Nanohybrid Material Based on Quantum Dots and Gold Nanorods |
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Authors: | Goncharov S A Krivenkov V A Samokhvalov P S Nabiev I Rakovich Y P |
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Institution: | 1.St. Petersburg State University,St. Petersburg,Russia;2.ITMO University,St. Petersburg,Russia |
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Abstract: | The dynamics of coherent propagation of a unipolar subcycle pulse of a large electric-field area (the integral of the electric-field strength with respect to time) in a nonlinear two-level resonant medium is studied theoretically. The propagating pulse is shown to be capable of splitting into a pair of individual components, each of which behaves like a pulse of self-induced transparency. This phenomenon is similar to the well-known phenomenon of splitting of a 4π or 6π pulse into a pair of 2π pulses of self-induced transparency, which occurs in the case of propagation of long pulses, when the notion of the pulse area is applicable and the area theorem holds. |
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