Citations Only: Recent submissions
Now showing items 401-420 of 990
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Frequency entrainment in optically injected semiconductor lasers
(American Physical Society, 1997-03-24)We theoretically predict and experimentally demonstrate the phenomenon of frequency entrainment in optically injected semiconductor lasers. The laser exhibits nonlinear subharmonic and ultraharmonic resonances for appropriate ... -
Localized synchronization in two coupled nonidentical semiconductor lasers
(American Physical Society, 1997-06-23)The dynamics of two mutually coupled but nonidentical semiconductor lasers are studied experimentally, numerically, and analytically for weak coupling. The lasers have dissimilar relaxation oscillation frequencies and ... -
Analytical stability boundaries for a semiconductor laser subject to optical injection
(Elsevier Science B.V., 1997-03-15)We determine analytically the stability boundaries of a semiconductor laser subject to external optical injection. Specifically, we derive the exact conditions for a steady state limit point and a Hopf bifurcation point ... -
Observation of the concurrent creation and annihilation of periodic orbits in a nonlinear RLC circuit
(American Physical Society, 1996-10)We have numerically investigated and experimentally demonstrated the presence of antimonotonicity: the concurrent creation and destruction of periodic orbits in a driven nonlinear RLC circuit. A simple manifestation of ... -
Unfolding of the period-two bifurcation in a fiber laser pumped with two modulation tones
(American Physical Society, 1997-12)The effect of a small second frequency component on a pump modulated neodymium fiber laser is investigated experimentally and theoretically. This term, whose frequency is exactly half the primary driver, incites an unfolding ... -
Subharmonic transition in an optically injected semiconductor laser: theory and experiments
(Institute of Physics, 1997-08)The equations for a semiconductor laser subject to detuned optical injection are analysed using asymptotic methods. We derive a third-order equation for the phase of the laser field which is then investigated for small ... -
Encoding and decoding messages with chaotic lasers
(American Physical Society, 1997-12)We investigate the structure of the strange attractor of a chaotic loss-modulated solid-state laser utilizing return maps based on a combination of intensity maxima and interspike intervals, as opposed to those utilizing ... -
Spatiotemporal organization of coupled nonlinear pendula through impurities
(American Physical Society, 1998-11)We study the effect of impurities introduced into a lattice and their ability to control the dynamical behavior of arrays of coupled nonlinear chaotic oscillators. In particular we show that under certain conditions a ... -
Largely detuned injection-locked semiconductor lasers
(Elsevier Science B.V., 1999-01-01)The equations for a semiconductor laser subject to injection are examined numerically and analytically for large values of the detuning parameter. Our analysis is motivated by recent experimental studies using either ... -
Fractal dimensions in tunneling processes and effects of environmental fluctuations
(World Scientific Publishing, 1998-03)We study electron tunneling between two infinte potential square wells connected via an opaque barrier and find that time evolution of the probability of the presence of a Gaussian wave packet, localized initially in one ... -
Linewidth broadening across a dynamical instability
(Elsevier Science B.V., 1998-12-21)We investigate experimentally and theoretically the variation of the emission linewidth of an optically-injected semiconductor laser across a resonant period-doubling bifurcation. Close to the dynamical instability, the ... -
Dynamical origin of low frequency fluctuations in external cavity semiconductor lasers
(Elsevier Science B.V., 2000-03-27)Low-frequency fluctuations (LLFs) in semiconductor lasers subject to time-delayed optical feedback from external reflectors have been experimentally observed and theoretically studied for the past two decades. Yet recently ... -
Quasiperiodic synchronization for two delay-coupled semiconductor lasers
(American Physical Society, 1999-05)The dynamical behavior of two mutually coupled semiconductor lasers is studied experimentally, numerically, and analytically for weak coupling. The lasers have dissimilar relaxation oscillation frequencies and intensities, ... -
Bifurcation to mixed external cavity mode solutions for semiconductor lasers subject to optical feedback
(Elsevier Science B.V., 2000-09-15)The Lang and Kobayashi equations modeling a semiconductor laser subject to optical feedback admit time-periodic solutions which are combinations of two distinct external cavity modes. We construct these solutions analytically ... -
Synchronous Sisyphus effect in diode lasers subject to optical feedback
(American Physical Society, 1999-08)Diode lasers exposed to moderate optical feedback, when biased near threshold, exhibit low-frequency intensity fluctuations in the RF spectrum that materialize as dropout events in the intensity time series. We recorded ... -
Self-organization of coupled nonlinear oscillators
(EDP Sciences, 1998-12-01)The effects of impurities introduced into a lattice of strongly coupled oscillators are studied. Contrary to our expectations, a single impurity can control the chaotic behavior of a long array of chaotic oscillators and ... -
Chaotic transitions and low-frequency fluctuations in semiconductor lasers with optical feedback
(Elsevier Science B.V., 2000-10)This paper examines the dynamical origin of low-frequency fluctuations (LFFs) in semiconductor lasers subject to time-delayed optical feedback. In particular, we study chaotic transitions leading to the onset of LFFs by ... -
Effects of gas-solid nonequilibrium in filtration combustion
(Taylor and Francis Ltd, 2003-08)To determine the effects of gas-solid nonequilibrium on forced filtration combustion (FC) waves, a two-temperature model is employed, with separate temperature fields for the solid and gas particles. We consider heterogeneous ... -
The Riemann problem and a high-resolution Godunov method for a model of compressible two-phase flow
(Elsevier Science B.V., Amsterdam, 2006-03)This paper considers the Riemann problem and an associated Godunov method for a model of compressible two-phase flow. The model is a reduced form of the well-known Baer-Nunziato model that describes the behavior of granular ... -
A sylvester theorem for conic sections
(Springer Verlag, 1988-12)If S is a finite set of points in the plane and no conic contains all points of S, then S determines a conic which contains exactly five points of S.