Spatial hysteresis and switching waves in thin-film semiconductor interferometers

Abstract

A plasma confined by an externally applied curved magnetic field will show an accelerated motion ('drift') to the region of weaker field. This motion is analysed in three different ways, In the first description the magnetohydrodynamic equation of motion is used, with the only assumption that no appreciable transverse accelerations are present. Secondly, the well-known microscopic picture (charge separation leading to E/B drift) is analysed for a ,!3 < 1 plasma with the guiding centre approximation. In the third model the change in the total energy of the system caused by a small outward displacement is considered. I n all models the outward acceleration is found to be uR = 2k(T, + ZT,)/Rml where R is the radius of curvature of the field. The energy for the outward motion is partly supplied by the primary circuit and partly by an expansion of the plasma.

<title>Switching waves, autosolitons, and parallel digital-analogous optical computing</title>

“…23,24 Therefore it would be prematurely to speak about possible applications of other spatial structures, including DAS's. Nevertheless, we note that comparatively small dimensions, high velocities of transverse motion (in bistable schemes with fast medium nonlinearity) and the set of operations on generation, annihilation, and reproduction of these structures demonstrated above make them promising for solution of important problem of information transverse transport.…”

“…(r -rk) = -F1,1 (rk -r) (23) The state of all DAS's constituting the system is supposed to be the same. The modulus of pairwise force repeats (with some factor) the single DAS field asymptotics and therefore contains diffractive oscillations (see also Ref.…”

<title>Diffusive and diffractive transverse structures in bistable semiconductor interferometers with band edge absorption</title>

“…6 shows propagation of the "cold" TP which appears periodically at the low intensity area and moves to the beam center. As a boundary conditions in numerical simulation we choose the From: http://proceedings.spiedigitallibrary.org/ on 06/26/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx 5.4x102, e = iO, LN/LT 1.4x102.Times corresponding to different curves are: (3) 10 r , (4) 42 C , (6) 72 r, (7) 82 t ,(8) 137 r.…”