Poynting singularities in optical dynamic systems

Novitsky, Andrey; Barkovsky, L. M.

doi:10.1103/physreva.79.033821

Cited by 48 publications

(81 citation statements)

References 34 publications

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“…Equations (1)- (3) are solved numerically using the finitedifference time-domain (FDTD) approach developed in our previous publication [43] and recently adapted to study lossgain structures [21]. As an initial value of the population difference, we employ the pumping parameter, i.e., w(t = 0) = w eq .…”

Section: Resonant Loss and Gain Mediamentioning

confidence: 99%

PT symmetry breaking in multilayers with resonant loss and gain locks light propagation direction

et al. 2018

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Using the Maxwell-Bloch equations for resonantly absorbing and amplifying media, we study the temporal dynamics of light propagation through the PT -symmetric structures with alternating loss and gain layers. This approach allows us to precisely describe the response of the structure near the exceptional points of PT -symmetry breaking phase transition and, in particular, take into account the nonlinear effect of loss and gain saturation in the PT -symmetry broken state. We reveal that in this latter state the multilayer system possesses a lasing-like behavior releasing the pumped energy in the form of powerful pulses. We predict locking of pulse direction due to the PT -symmetry breaking, as well as saturation-induced irreversibility of phase transition and nonreciprocal transmission.

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Section: Resonant Loss and Gain Mediamentioning

confidence: 99%

PT symmetry breaking in multilayers with resonant loss and gain locks light propagation direction

et al. 2018

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“…(1)-(3) numerically using essentially the same approach as in our previous publications (see [24]). The parameters of the medium and light used for calculations (if not stated otherwise) are listed below.…”

Section: Main Equations and Parametersmentioning

confidence: 99%

Optical kinks and kink-kink and kink-pulse interactions in resonant two-level media

Novitsky

2017

Phys. Rev. A

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An optical kink is a shock-wave-like field structure which can appear in a resonant two-level medium as a result of the nonlinear process of self-steepening. We numerically simulate this process using an adiabatically switching waveform as an input and confirm the self-similarity of resulting kinks. The analysis is also applicable to a more general waveform with a decaying trailing edge which we call a kinklike pulse. We study in detail collisions of kinks with other kinks and ultrashort pulses and demonstrate the possibility to control kink speed by changing the parameters of counterpropagating fields. The effects considered can be treated as belonging to a wide class of unexplored phenomena in the regime of incoherent light-matter interaction.

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“…It is also important to note that in (6) the slowly varying envelope approximation (SVEA) is not used. To solve (2)- (6) self-consistently, we apply the numerical approach which is essentially the same as in our previous studies [21]. At the edges of the calculation region, we apply the so-called absorbing boundary conditions using the total field / scattered field (TF/SF) and the perfectly matched layer (PML) methods [28,29].…”

Section: Problem Statementmentioning

confidence: 99%

Ultrashort pulses in an inhomogeneously broadened two-level medium: soliton formation and inelastic collisions

Novitsky¹

2014

J. Phys. B: At. Mol. Opt. Phys.

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Abstract. Using numerical simulations, we study propagation of ultrashort light pulses in an inhomogeneously broadened two-level medium. There are two main issues in our study. The first one concerns the transient process of self-induced transparency soliton formation, in particularly the compression of the pulse which seems to be more effective in the case of homogeneous broadening. The second question deals with the collisions of counter-propagating solitons. It is shown that the level of inhomogeneous broadening has substantial effect on elasticity of such collisions.

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Poynting singularities in optical dynamic systems

Cited by 48 publications

References 34 publications

PT symmetry breaking in multilayers with resonant loss and gain locks light propagation direction

PT symmetry breaking in multilayers with resonant loss and gain locks light propagation direction

Optical kinks and kink-kink and kink-pulse interactions in resonant two-level media

Ultrashort pulses in an inhomogeneously broadened two-level medium: soliton formation and inelastic collisions

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