0000000000146793

AUTHOR

Serguey Odoulov

showing 5 related works from this author

Oscillation spectra of semilinear photorefractive coherent oscillator with two pump waves

2002

The transition of the single-frequency oscillation of a semilinear photorefractive coherent oscillator for sufficiently large coupling strengths into two-frequency oscillation is predicted and is observed experimentally. The critical value of coupling strength at which the bifurcation occurs is a function of pump-intensity ratio and cavity losses. For certain combinations of these parameters, the critical coupling strength for spectrum bifurcation becomes smaller than the threshold coupling strength: in these cases double-frequency oscillation appears at the threshold. The supercritical bifurcation in the oscillation spectrum is analogous to the second-order phase transition.

PhysicsPhase transitionCondensed matter physicsOscillationStatistical and Nonlinear PhysicsPhotorefractive effectCritical valueAtomic and Molecular Physics and OpticsCoupling (physics)Four-wave mixingQuantum mechanicsPhase conjugationNonlinear Sciences::Pattern Formation and SolitonsBifurcationJournal of the Optical Society of America B
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Second-order optical phase transition in a semilinear photorefractive oscillator with two counterpropagating pump waves

2002

Soft-mode onset of coherent oscillation is revealed in a semilinear cavity with two counterpropagating pump waves. From the dynamics of the oscillation intensity and the dynamics of the grating decay with the feedback applied, critical behavior is detected: Both the characteristic time of oscillation onset and grating decay time go to infinity exactly at the threshold coupling strength. A conclusion is made about the similarity of this type of oscillator to the second-order phase transition.

PhysicsPhase transitionOscillationPhysics::OpticsStatistical and Nonlinear PhysicsPhotorefractive effectGratingAtomic and Molecular Physics and OpticsOptical pumpingQuantum electrodynamicsQuantum mechanicsPhase conjugationDiffraction gratingRefractive indexJournal of the Optical Society of America B
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Dynamics of four-wave-mixing oscillators with quasi-phase-matching

2009

The effect of pump-wave misalignment on the oscillation spectra of a semilinear photorefractive oscillator is studied numerically and compared with the results of experiments performed with ${\text{BaTiO}}_{3}:\text{Co}$ and ${\text{KNbO}}_{3}:\text{Ag},\text{Fe}$ crystals.

Quasi-phase-matchingPhysicsFour-wave mixingOpticsCondensed matter physicsbusiness.industryOscillationFrequency mixingPhotorefractive effectPhase conjugationbusinessAtomic and Molecular Physics and OpticsSpectral linePhysical Review A
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Semilinear photorefractive oscillator with reflection gratings

2003

We present results of calculation of the steady-state output characteristics for a semilinear photorefractive oscillator pumped with two independent counterpropagating waves when the reflection grating is operative and compare them with measurements made with a BaTiO3:Co.

Physicsbusiness.industryPhysics::OpticsPhotorefractive effectFresnel equationsGratingReflectivityFour-wave mixingOpticsReflection (physics)OptoelectronicsPhysics::Atomic PhysicsbusinessNonlinear Sciences::Pattern Formation and SolitonsPhotorefractive Effects, Materials, and Devices
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Absolute instability in backward wave four-wave mixing: spatial effects

2010

The spatial distribution of new beams generated above the threshold of absolute instability of two counterpropagating incoherent light waves is studied and compared with the results of calculation.

PhysicsScatteringbusiness.industryWave propagationNonlinear opticsStatistical and Nonlinear PhysicsPolarization (waves)InstabilityAtomic and Molecular Physics and OpticsComputational physicsFour-wave mixingOpticsLight beamSpatial frequencybusinessJournal of the Optical Society of America B
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