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10th International Conference on Laser and Fiber-Optical Networks Modeling (LFNM 2010). 2nd IEEE International Workshop on THz Radiation: Basic Research and Applications (TERA 2010)
The variational method is employed to study the evolution of two adjacent solitons propagating in a strongly dispersion-managed, periodically amplified, single channel optical fiber, in the strong management regime. We study third-order-dispersion (TOD) effects in terms of pulsewidth and center pulse position finding that TOD stabilizes the transmission characteristics and also provides an additional...
The behaviour of a scalar optical beam at the boundary between two dissimilar nonlinear media is of fundamental interest in photonics. Here, we report the first systematic generalization of our Kerr analyses to a wider class of power-law materials. Universal refraction laws will be given, and theory-simulation agreement demonstrated.
Spontaneous emission of a quantum dot placed in a 1D photonic band gap structure is analytically studied. Part of energy which remains nonradiated is obtained. It is shown that decay first follows ~t-1/2 law changing to ~t-3/2 law. Analytical expression for the spectrum is obtained. Analytical theory of the Borrmann effect is developed.
Polariton modes in quantum-well traps for Bose-condensation of excitons are studied. It is found that some modes can become unstable and start lasing due to exciton spectrum narrowing during condensation. A model of such lasing is developed, showing different lasing regimes and possible coherent features of recombination emission of excitons.
The map of dynamic regimes of a dual-wavelength vertical external cavity surface-emitting laser is built. The areas of continuous wave operation as well as of time-periodic, quasi-periodic and chaotic operation can be marked out in the map. A possible explanation of quite different laser behavior in those area is given.
In the given paper we proposed an effective finite-difference scheme for a two-dimensional problem of femtosecond pulse influence on a semiconductor in the case of nonlinear dependence of light energy absorption coefficient on electric field potential.
Approximate theory of interaction of optical waves with pure reflection gratings at fulfillment of the second and third orders Bragg conditions has been developed. Expressions of the reflectance were obtained. The start-oscillation conditions in gratings with amplification were searched. It is found that reflectance zeros are near generating modes of grating with amplification in gratings without...
In this paper we propose an efficient numerical technique to model the propagation of an ultrashort pulsed optical beam in dispersive dielectric medium. The method has been efficiently used for the modeling of non-dispersive medium. A moving numerical time window along the propagation of the field allows large saving of computational time and memory in comparison with the conventional FDTD to solve...
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