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- Valery G. Chernoray, Victor V. Kozlov, Lennart Löfdahl, Ho Hwan Chun
- J. Visualization
- 2006

Nonlinear instabilities of boundary layer streaks is investigated experimentally. Extensive measurements visualizing the sinusoidal and varicose instabilities of streaky structures at the nonlinear stage of the breakdown process in boundary layer are presented. The flow behaviour in the course of spatial evolution of the streaky structures with a secondary… (More)

- V V Kozlov, I V Volovich
- 2008

The eigenvalue problem for the square integrable solutions is studied usually for elliptic equations. In this note we consider such a problem for the hyperbolic Klein-Gordon equation on Lorentzian manifolds. The investigation could help to answer the question why elementary particles have a discrete mass spectrum. An infinite family of square integrable… (More)

- Victor V Kozlov, Javier Nuño, Juan Diego Ania-Castañón, Stefan Wabnitz
- Optics letters
- 2010

We propose and apply a theoretical description of a Raman amplifier based on the vector model of randomly birefringent fibers to the characterization of Raman polarizers. The Raman polarizer is a special type of Raman amplifier with the property of producing a highly repolarized beam when fed by relatively weak and unpolarized light.

- V V Kozlov
- 1999

The questions of justification of the Gibbs canonical distribution for systems with elastic impacts are discussed. A special attention is paid to the description of probability measures with densities depending on the system energy.) be conjugate canonical momenta of a Hamiltonian system with n degrees of freedom and a stationary Hamiltonian H(x, y, λ),… (More)

- V V Kozlov
- 2003

The kinetics of collisionless continuous medium is studied in a bounded region on a curved manifold. We have assumed that in statistical equilibrium, the probability distribution density depends only on the total energy. It is shown that in this case, all the fundamental relations for a multi-dimensional ideal gas in thermal equilibrium hold true. According… (More)

- Victor V Kozlov, Konstantin Turitsyn, Stefan Wabnitz
- Optics letters
- 2011

We propose a type of lossless nonlinear polarizer, novel to our knowledge, a device that transforms any input state of polarization (SOP) of a signal beam into one and the same well-defined SOP toward the output, and perform this without any polarization-dependent losses. At the polarizer output end, the signal SOP appears to be locked to the input pump… (More)

- V V Kozlov
- 2001

In this article we develop Poincaré ideas about a heat balance of ideal gas considered as a collisionless continuous medium. We obtain the theorems on diffusion in nondegenerate completely integrable systems. As a corollary we show that for any initial distribution the gas will be eventually irreversibly and uniformly distributed over all volume, although… (More)

- V V Kozlov
- 1999

Traditional derivation of Gibbs canonical distribution and the justification of thermodynamics are based on the assumption concerning an isoenergetic ergodicity of a system of n weakly interacting identical subsystems and passage to the limit n → ∞. In the presented work we develop another approach to these problems assuming that n is fixed and n ≥ 2. The… (More)

The presentation is focusing on the coherent features of a swept wing boundary layer. The three-dimensional flow of a swept wing is highly unstable with respect to longitudinal streamwise vortices, which, in turn, are subject to the secondary instabilities. The fact is that stationary vortex packets are most likely to be generated under natural flight… (More)

- Katarzyna Krupa, Alessandro Tonello, +6 authors Sébastien Tanzilli
- Optics express
- 2012

We experimentally study Bragg-scattering four-wave mixing in a highly nonlinear fiber at telecom wavelengths using photon counters. We explore the polarization dependence of this process with a continuous wave signal in the macroscopic and attenuated regime, with a wavelength shift of 23 nm. Our measurements of mean photon numbers per second under various… (More)