Browsing Citations Only by Author "Gavrielides, Athanasios"

Now showing items 1-20 of 45

    • All-optical double-sideband suppressed-carrier modulation of semiconductor lasers 

      Varangis, Petros; Gavrielides, Athanasios; Kovanis, Vassilios; Erneux, Thomas; Lester, Luke (American Institute of Physics, 1998-06-15)
      We demonstrate theoretically and verify experimentally that injection locking may be used to achieve double-sideband suppressed-carrier modulation of semiconductor lasers. Our theoretical investigation explains the suppression ...

    • Amplitude modulation in a pair of time-delay coupled external-cavity semiconductor lasers 

      Prasad, Awadhesh; Lai, Ying-Cheng; Gavrielides, Athanasios; Kovanis, Vassilios (Elsevier Science B.V., 2003-11-03)
      The phenomenon of amplitude death in coupled nonlinear oscillators has been a topic of recent interest. We demonstrate that a similar phenomenon can occur in a pair of time-delay coupled, external-cavity semiconductor ...

    • Analytical stability boundaries for a semiconductor laser subject to optical injection 

      Gavrielides, Athanasios; Kovanis, Vassilios; Erneux, Thomas (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 ...

    • Averaged equations for injection locked semiconductor lasers 

      Nizette, Michel; Erneux, Thomas; Gavrielides, Athanasios; Kovanis, Vassilios (Elsevier Science B.V., 2002-01-15)
      An averaging method valid for strongly nonlinear oscillators is used for the first time to describe the pulsating intensity regimes of semiconductor lasers subject to injection. Slow-time equations are derived which are ...

    • Bifurcation to mixed external cavity mode solutions for semiconductor lasers subject to optical feedback 

      Erneux, Thomas; Rogister, Fabien; Gavrielides, Athanasios; Kovanis, Vassilios (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 ...

    • Bistability of pulsating intensities for double-locked laser diodes 

      Nizette, Michel; Erneux, Thomas; Gavrielides, Athanasios; Kovanis, Vassilios; Simpson, Thomas (American Physical Society, 2002-05)
      Rate equations for semiconductor lasers subjected to simultaneous near-resonant optical injection and microwave current modulation are examined by combined analytical-numerical bifurcation techniques. Simple qualitative ...

    • Cavity enhancement of resonant frequencies in semiconductor lasers subject to optical injection 

      Simpson, Thomas; Liu, Jia-Ming; Huang, Kai-Feng; Tai, Kuochou; Clayton, Christopher; Gavrielides, Athanasios; Kovanis, Vassilios (American Physical Society, 1995-12)
      The injection of an optical signal into a semiconductor laser biased near or above the lasing threshold modifies the coupling between the free carriers and the intracavity field. The detuning between the frequency of the ...

    • Chaotic transitions and low-frequency fluctuations in semiconductor lasers with optical feedback 

      Davidchack, Ruslan; Lai, Ying-Cheng; Gavrielides, Athanasios; Kovanis, Vassilios (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 ...

    • Complicated basins in external-cavity semiconductor lasers 

      Prasad, Awadhesh; Lai, Ying-Cheng; Gavrielides, Athanasios; Kovanis, Vassilios (Elsevier Science B.V., 2003-07-21)
      We demonstrate that complicated basins of attraction can occur in time-delay coupled, external-cavity semiconductor lasers. In particular, we find that there can be multiple coexisting attractors associated with low-frequency ...

    • Controlling chaos may induce new attractors in an optical device 

      Gavrielides, Athanasios; Alsing, Paul; Kovanis, Vassilios; Erneux, Thomas (Elsevier Science, B.V., 1995-04-01)
      The logistic map has been used to describe period doubling bifurcations for periodically modulated lasers. It also represents an asymptotic approximation of Ikeda's map for a passive ring cavity. Because various control ...

    • Dynamical origin of low frequency fluctuations in external cavity semiconductor lasers 

      Davidchack, Ruslan; Lai, Ying-Cheng; Gavrielides, Athanasios; Kovanis, Vassilios (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 ...

    • Encoding and decoding messages with chaotic lasers 

      Alsing, Paul; Gavrielides, Athanasios; Kovanis, Vassilios; Roy, Rajarshi; Thornburg, K. Scott Jr. (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 ...

    • Experimental demonstration of antimonotonicity: the concurrent creation and destruction of periodic orbits in a driven nonlinear electronic resonator 

      Newell, Timothy; Kovanis, Vassilios; Gavrielides, Athanasios (American Physical Society, 1996-08-26)
      We have experimentally demonstrated antimonotonicity, the concurrent creation and destruction of periodic orbits in a driven nonlinear electronic resonator. A manifestation of antimonotonicity in one-dimensional systems ...

    • Frequency entrainment in optically injected semiconductor lasers 

      Varangis, Petros; Gavrielides, Athanasios; Erneux, Thomas; Kovanis, Vassilios; Lester, Luke (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 ...

    • History-dependent control of unstable periodic orbits 

      Alsing, Paul; Gavrielides, Athanasios; Kovanis, Vassilios (American Physical Society, 1994-09)
      We present a method of stabilizing unstable periodic orbits in systems whose natural time scales are on the order of or faster than the time it would take for the experimental implementation of the Ott-Grebogi-Yorke (OGY) ...

    • Injection-locked semiconductor laser dynamics from large to small detunings 

      Nizette, Michel; Erneux, Thomas; Gavrielides, Athanasios; Kovanis, Vassilios (The International Society for Optical Engineering (SPIE), 1999-08)
      The equations for a semiconductor laser subject to injection are examined numerically and analytically from large negative to moderate negative to positive values of the detuning. We concentrate on the stability of the ...

    • Instabilities and chaos in optically injected semiconductor lasers 

      Kovanis, Vassilios; Gavrielides, Athanasios; Simpson, Thomas; Liu, Jia-Ming (American Institute of Physics, 1995-11-06)
      We have experimentally obtained and theoretically analyzed a systematic map of the various instabilities induced in a semiconductor laser subject to strong optical injection as the amount of optical injection power and ...

    • Investigation of coupled diode laser dynamics using an electronic analog 

      Sukow, David; Kovanis, Vassilios; Gavrielides, Athanasios (The International Society for Optical Engineering (SPIE), 1999-08)
      We study the behavior of coupled semiconductor lasers using a reduced phase model that captures their essential dynamics yet remains analytically tractable. We design a simple electronic circuit analog, a phaselocked loop, ...

    • Lang and Kobayashi phase equation 

      Alsing, Paul; Kovanis, Vassilios; Gavrielides, Athanasios; Erneux, Thomas (American Physical Society, 1996-06)
      Lang and Kobayashi equations for a semiconductor laser subject to optical feedback are investigated by using asymptotic methods. Our analysis is based on the values of two key parameters, namely, the small ratio of the ...

    • Lang and Kobayashi phase equation and its validity for low pump 

      Erneux, Thomas; Alsing, Paul; Kovanis, Vassilios; Gavrielides, Athanasios (The International Society for Optical Engineering (SPIE), 1996-05)
      An asymptotic theory of Lang and Kobayashi (LK) equations describing a semiconductor laser subject to optical feedback is investigated in detail. We obtain a simple third order, nonlinear, delay-differential equation for ...