Control of the perturbation-wave-vector range of modulation instability of dispersive electromagnetic waves in the nonlocal Josephson electrodynamics of a thin superconducting film

2003 ◽  
Vol 45 (12) ◽  
pp. 2232-2236
Author(s):  
A. I. Lomtev
Keyword(s):  
Wave Vector ◽  
Electromagnetic Waves ◽  
Modulation Instability ◽  
Superconducting Film ◽  
Perturbation Wave ◽  
Thin Superconducting Film

THz pulse train generation through ultrafast development of surface plasmon-polariton modulation instability

2021 ◽  
Author(s):  
Dmitry A Korobko ◽  
Igor O. Zolotovskii ◽  
Sergey Moiseev ◽  
Alexei S. Kadochkin ◽  
Vyacheslav Svetukhin
Keyword(s):  
Surface Plasmon ◽  
Electromagnetic Waves ◽  
Surface Plasmon Polariton ◽  
Modulation Instability ◽  
Frequency Comb ◽  
Nonlinear Effects ◽  
Wave Dispersion ◽  
Instability Effect ◽  
Plasmon Polariton ◽  
Plasmon Wave

Abstract Propagation of high-intensity electromagnetic waves in a waveguide structure could initiate nonlinear effects resulting in drastic changes of their spatial and temporal characteristics. We study the modulation instability effect induced by propagation of surface plasmon polaritons in a silver thin-film waveguide. The nonlinear Schrodinger equation for propagating surface plasmon wave is obtained. It is shown numerically that the modulation instability effect can give rise to ultrafast spatial redistribution and longitudinal localization of surface plasmon-polariton wave energy in subwavelength scale. The dependence of plasmon wave dispersion and nonlinear characteristics on metal film thickness is considered. We demonstrate that the use of films with the thickness varying along the waveguide length allows reduction of the generated pulse width and increase of frequency comb bandwidth. The proposed technique is promising for design of ultra-compact (tens of nm) optical generators delivering pulse trains with the repetition rate higher than 1THz.

scholarly journals Generation of Terahertz oscillations by thin superconducting film in fluctuation regime

2019 ◽  
Vol 92 (7) ◽  
Author(s):  
Todor M. Mishonov ◽  
Albert M. Varonov ◽  
Ioulia Chikina ◽  
Andrey A. Varlamov
Keyword(s):  
Superconducting Film ◽  
Terahertz Oscillations ◽  
Thin Superconducting Film

INTERACTION OF INFRARED ELECTROMAGNETIC WAVES IN RESONANT LAYERED STRUCTURES WITH n-GaAs SEMICONDUCTOR FILM

2009 ◽  
Vol 18 (01) ◽  
pp. 73-83
Author(s):  
V. GRIMALSKY ◽  
S. KOSHEVAYA ◽  
J. ESCOBEDO-A
Keyword(s):  
Electric Field ◽  
Total Internal Reflection ◽  
Electromagnetic Waves ◽  
Oblique Incidence ◽  
Modulation Instability ◽  
Semiconductor Film ◽  
Gaas Film ◽  
Short Pulses ◽  
Bias Electric Field ◽  
Resonant Transmission

Interaction of infrared electromagnetic (EM) waves in a layered structure with n- GaAs film is investigated theoretically. An oblique incidence of EM wave is considered, when the total internal reflection and resonant transmission occur. It is demonstrated that this structure modulates effectively the infrared EM wave. The modulation mechanism is due to the transfer of electrons from the upper valley to the higher ones in a strong bias electric field. An interaction of strong incident infrared EM pulses with this structure is also considered in the case of the absence of a bias electric field. Both the nonlinear switching of short pulses and the modulation instability of long strong pulses take place.

Intrinsic resonance properties of thin superconducting film in non-Josephson oscillation regime

1996 ◽  
Vol 46 (S2) ◽  
pp. 625-626
Author(s):  
Alexei B. Agafonov ◽  
Georgii E. Churilov ◽  
Dmitriy A. Dikin ◽  
Vitaly M. Dmitriev
Keyword(s):  
Superconducting Film ◽  
Oscillation Regime ◽  
Resonance Properties ◽  
Josephson Oscillation ◽  
Thin Superconducting Film

Passage of Abrikosov Vortexes through a Boundary Barrier in Thin Superconducting Film

2004 ◽  
Vol 9 (2) ◽  
pp. 145-149 ◽  
Author(s):  
V. Pyragas
Keyword(s):  
Critical Current ◽  
Superconducting Film ◽  
Dimensional Chain ◽  
One Dimensional ◽  
Weak Pinning ◽  
Thin Superconducting Film ◽  
Abrikosov Vortices

The model of Abrikosov vortices motion from the edges of thin superconducting film, when the current slightly exceeds the critical current, is considered. It is shown that the additional dynamic barrier is formed in the regions of a weak pinning. It is assumed for simplicity that the group of vortices is derived in the shape of one-dimensional chain. It is demonstrated, that the barrier hinders the penetration of such a chains in the film.

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