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  1. No Access

    Article

    Optical second harmonic generation and its photoinduced dynamics in ferroelectric semiconductor Sn2P2S6

    By means of optical pump–probe technique, the ultrafast dynamics of nonlinear optical response of the ferroelectric semiconductor Sn2P2S6 crystal excited with a femtosecond laser pulse has been investigated. It h...

    K. A. Brekhov, K. A. Grishunin, D. V. Afanas’ev, S. V. Semin… in Physics of the Solid State (2018)

  2. No Access

    Article

    Structure of currents in the soliton of an internal wave

    The characteristics of strongly nonlinear solitary internal waves (solitons), which are calculated by the nonlinear numerical model of the Massachusetts Institute of Technology (MITgcm), are studied. The model...

    O. E. Kurkina, A. A. Kurkin, E. N. Pelinovsky, S. V. Semin, T. G. Talipova… in Oceanology (2016)

  3. No Access

    Article

    Photoinduced dynamics and femtosecond excitation of phonon modes in ferroelectric semiconductor Sn2P2S6

    The ultrafast dynamics of electrons and phonons excited by femtosecond light pulses in ferroelectric semiconductor Sn2P2S6 is investigated using the optical pump–probe technique. It is demonstrated that a soft mo...

    K. A. Brekhov, K. A. Grishunin, D. V. Afanas’ev, S. V. Semin… in JETP Letters (2015)

  4. No Access

    Article

    Edge effects in second-harmonic generation in nanoscale layers of transition-metal dichalcogenides

    The results of studying the optical properties of nanoscale single crystals of MoS2:Cl2 and WS2:Br2 semiconductor compounds are presented. In microscopic images obtained at the wavelength of the second (400 nm), ...

    E. D. Mishina, N. E. Sherstyuk, A. P. Shestakova, S. D. Lavrov… in Semiconductors (2015)

  5. No Access

    Article

    Transformation of surface waves over a bottom step

    We analyze in detail the problem of the transformation of surface gravity waves over a bottom step in a basin of arbitrary depth in the linear approximation. We found that strict analytical results can be obta...

    A. A. Kurkin, S. V. Semin, Yu. A. Stepanyants in Izvestiya, Atmospheric and Oceanic Physics (2015)

  6. No Access

    Article

    Dynamic processes in helical electron beams in gyrotrons

    The results of theoretical and experimental studies of collective processes in helical electron beams in gyrotron-type devices are generalized. Main attention is paid to low-frequency oscillations associated w...

    O. I. Louksha, D. B. Samsonov, G. G. Sominskii, S. V. Semin in Technical Physics (2013)

  7. No Access

    Article

    Nonlinear optical microscopy and spectroscopy of ferroelectric and multiferroic materials

    The specific features of the application of two-photon microscopy and spectroscopy to the investigation of multiferroic and piezoelectric nanostructures have been considered. It has been shown that the nonline...

    E. D. Mishina, S. V. Semin, K. V. Shvyrkov, A. V. Kudryavtsev… in Physics of the Solid State (2012)

  8. No Access

    Article

    Map** of two-photon luminescence amplification in zinc-oxide microstructures

    The map** of two-photon excited luminescence in aggregations of free-standing zinc oxide microrods has been carried out at room temperature. Two-photon luminescence spectra in the excitonic region for indivi...

    S. V. Semin, N. E. Sherstyuk, E. D. Mishina, C. Gherman, L. Kulyuk… in Semiconductors (2012)

  9. No Access

    Article

    A computer-aided two-photon scanning microscope

    A computer-aided digital microscope for studying microstructures at wavelengths of the second optical harmonic and two-photon luminescence is designed. In contrast to commercial instruments, the microscope is ...

    S. V. Semin, A. V. Kudryavtsev, E. D. Mishina in Instruments and Experimental Techniques (2012)

  10. No Access

    Article

    Investigation of ferroelectric properties of bismuth ferrite films by the second optical harmonic generation technique

    The specific features of the ferroelectric polarization switching in bismuth ferrite thin films doped with neodymium ions are investigated by the optical second harmonic generation technique. The structure and...

    N. É. Sherstyuk, N. A. Il’in, S. V. Semin, E. D. Mishina… in Physics of the Solid State (2009)