Category Archives: Статья

Formation of two-dimensional image contours in zero and plus second diffraction orders in the process of double Bragg diffraction

V. M. Kotov, S. V. Averin, A. A. Zenkina, A. S. Belousova Kotelnikov Institute of Radioengineering and Electronics, Fryazino Branch, Russian Academy of Sciences Abstract: We examine a possibility of double Bragg diffraction for two-dimensional image edge enhancement simultaneously in two Bragg orders. Transfer functions of the Bragg orders of double diffraction are obtained taking… Read More »

Soliton mode beams with positive and negative group velocities in a thin left-handed film on a right-handed Kerr substrate

  Yu. V. Zelenetckaia, R. V. Litvinov, N. R. Melikhova, A. S. Spiridonova a Tomsk State University of Control Systems and Radioelectronics b Tomsk Polytechnic University Abstract: We consider propagation of stationary dark and bright spatial solitons and various pairs of incoherently coupled solitons in a planar waveguide consisting of a thin left-handed film on… Read More »

Laser synthesis of nanopowders based on zinc selenide for the preparation of highly transparent ceramics

  V. V. Osipov, V. V. Platonov, A. M. Murzakaev, E. V. Tikhonov, A. I. Medvedev Institute of Electrophysics, Ural Branch, Russian Academy of Sciences, Ekaterinburg Abstract: We report the synthesis of weakly agglomerated ZnSe and Cu:ZnSe nanopowders by evaporation of a target of a corresponding chemical composition using an ytterbium-doped fibre laser emitting periodic… Read More »

Counter-propagating four-wave mixing on phase–amplitude holographic gratings in a cubic photorefractive crystal

V. N. Naunyka Mozyr State Teacher’s Training University named after I. P. Shamiakin Abstract: system of coupled-wave equations is presented, which can be used to find the components of the vector amplitudes of linearly polarised light waves during four-wave mixing on phase-amplitude holographic gratings in a cubic photorefractive crystal. When deriving the coupling equations, account… Read More »

Effect of the thickness of the passivating reactive titanium layer of mirror facets on the electrical characteristics of diode lasers

N. S. Utkov, A. E. Drakin, G. T. Mikayelyan a Lassard systems, Obninsk, Moscow region b P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow c Inject Ltd., Saratov Abstract: A method is described for determining an allowable thickness of a titanium layer for passivating emitting faces of a diode laser. Reactive… Read More »

Parallel modes at pulsed two-frequency resonance in the Λ-scheme of degenerate quantum levels

O. M. Parshkov Yuri Gagarin State Technical University of Saratov Abstract: We report the results of a theoretical study of the co-propagation of two elliptically polarised laser pulses resonantly interacting with quantum transitions in the Λ-scheme of degenerate energy levels. We consider the case of a weak high-frequency field, in which there arises the phenomenon… Read More »

Energies of X-ray laser pulses and stimulated emission wavelengths achievable by pumping X-ray lasers using the National Ignition Facility

M. L. Shmatov Ioffe Institute, St. Petersburg Abstract: We present estimates according to which the energies of X-ray laser pulses with wavelengths of 35.6 and 30.56 Å, obtained by pumping single-pass lasers on 4d–4p transitions of nickel-like Au and Bi ions by sixteen beams of the National Ignition Facility (NIF) with a doubled radiation frequency,… Read More »

Comparison of mode-locking regimes based on nonlinear rotation of the polarization plane in erbium-doped fibre lasers with dumbbell-shaped and ring cavities

A. D. Zverev, V. A. Kamynin, V. B. Tsvetkov, D. G. Kochiev Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow Abstract: Stable generation regimes of both single ultrashort pulses and pulse trains in the spectral range 1540–1600 nm are demonstrated for two configurations of dumbbell-shaped and ring fibre laser cavities. In both… Read More »

Highly efficient 1610-nm in-band cw Tm:LSO laser

M. Pei, J. Wu, Yu. Ding, X. M. Duan a National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin, China b Science and Technology on Electro-Optical Information Security Control Laboratory, Tianjin, China Abstract: We demonstrate a highly efficient continuous-wave Tm:LSO laser in-band pumped by a FBG-locked Er-doped fibre laser at 1610 nm.… Read More »

Radiation divergence of microsecond lasers based on a solution of rhodamine 6G and a solid-state laser based on a perylene-activated nanocomposite

V. V. Tarkovsky, S. S. Anufrik, A. O. Romashkevich, P. R. Makey Yanka Kupala State University of Grodno Abstract: Radiation divergences of a microsecond laser based on an ethanol solution of rhodamine 6G and a solid-state laser based on a perylene-activated nanoporous glass–polymer composite (NPG–P) are comparatively investigated as functions of the pump energy density.… Read More »