33 Result(s)

Article

Nano-Optics of Thin-Film Laser-Induced Topological Structures on a Solid Surface: Fundamental Phenomena and Their Applications

Laser-controlled modifications of the structure and topology of the surface layers of a solid that are used to obtain specific characteristics in objects for various purposes are considered. Structural phase t...

S. N. Bagayev, S. M. Arakelian… in Bulletin of the Russian Academy of Science… (2020)

Article

Laser ceramics with disordered crystalline structure

New ceramic materials based on yttrium oxide Y₂O₃ with isovalent (Yb₂O₃, Nd₂ O₃, and Lu₂O₃) and heterovalent (ZrO₂ and HfO₂) components are synthesized, and their spectroscopic properties are investigated. Possib...

S. N. Bagayev, V. V. Osipov… in Journal of Applied Mechanics and Technical… (2015)

Article

High-intensity femtosecond laser systems based on coherent combining of optical fields

The basic design principles of high-intensity laser systems based on coherent combining of radiation of multichannel laser facilities are considered. The influence of the instability of parameters of individua...

S. N. Bagayev, V. I. Trunov, E. V. Pestryakov, V. E. Leschenko… in Optics and Spectroscopy (2013)

Article

Experimental and theoretical studies of the influence of pulse pressure oscillations on the processes of microhemocirculation

The influence of pulse pressure oscillations on the processes of transcapillary exchange in the hemodynamics has been investigated by experimental and numerical methods. The active role of microvessel walls in...

S. N. Bagayev, V. N. Zakharov, V. A. Orlov… in Journal of Engineering Physics and Thermop… (2012)

Article

Fabrication and properties of neodymium-activated yttrium oxide optical ceramics

About new technology of production of transparent ceramics including laser synthesis of nanopowders, their magnetic pulsed compaction and vacuum sintering is reported. The results of investigations of the synt...

S. N. Bagayev, V. V. Osipov, M. G. Ivanov, V. V. Platonov, A. N. Orlov… in Laser Physics (2009)

Article

Josephson dynamics for coupled polariton modes under the atom–field interaction in the cavity

We consider a new approach to the problem of Bose–Einstein condensation (BEC) of polaritons for atom–field interaction under the strong coupling regime in the cavity. We investigate the dynamics of two macrosc...

A.P. Alodjants, S.M. Arakelian, S.N. Bagayev, V.S. Egorov, A.Y. Leksin in Applied Physics B (2007)

Article

Observation of the Brownian motion of individual microobjects in liquids for small time and spatial scales

S. N. Bagayev, V. A. Orlov, S. V. Panov in Doklady Physics (2007)

Article

Quantum cloning in coupled states of an optical field and an atomic ensemble by means of quasi-condensation of polaritons

We consider a new approach to the storage of quantum information by macroscopic atomic excitation of two-level atomic systems. We suggest an original scheme of quantum cloning of an optical field into cavity p...

A. P. Alodjants, S. M. Arakelian, S. N. Bagayev… in Journal of Russian Laser Research (2006)

Chapter

Femtosecond Combs for Precision Metrology

A new stage of development of optical clocks and synthesizers is possible with the use of highly stable femtosecond lasers. Using femtosecond lasers and special optical fibres, a highly stable frequency comb c...

S. N. Bagayev, V. I. Denisov, V. M. Klementyev… in Femtosecond Laser Spectroscopy (2005)

Article

New data on the physical properties of Y₃Al₅O₁₂-based nanocrystalline laser ceramics

Microhardness and fracture toughness of highly transparent Y₃Al₅O₁₂-and Y₃Al₅O₁₂: Nd³⁺-based nanocrystalline ceramics are measured for the first time. For the Y₃Al₅O₁₂: Nd³⁺ laser ceramics, the use of a longitudi...

A. A. Kaminskii, M. Sh. Akchurin, V. I. Alshits, K. Ueda… in Crystallography Reports (2003)

Article

The mode structure and spectral properties of supercontinuum emission from microstructure fibers

The mode structure and spectral properties of supercontinuum emission generated by femtosecond pulses of Ti: sapphire laser radiation in microstructure fibers are studied. The long-wavelength (720–900 nm) and ...

A. B. Fedotov, ** Zhou, Yu. N. Kondrat’ev… in Journal of Experimental and Theoretical Ph… (2002)

Article

Two-octave spectral broadening of subnanojoule Cr:forsterite femtosecond laser pulses in tapered fibers

Spectral broadening of femtosecond Cr:forsterite laser pulses is enhanced due to the use of tapered fibers. Supercontinuum generation with unamplified subnanojoule femtosecond Cr:forsterite laser pulses is obs...

D.A. Akimov, A.A. Ivanov, M.V. Alfimov, S.N. Bagayev, T.A. Birks… in Applied Physics B (2002)

Article

Spectral superbroadening of subnanojoule Cr:Forsterite femtosecond laser pulses in a tapered fiber

Spectral superbroadening of subnanojoule femtosecond Cr:forsterite laser pulses is demonstrated for the first time in experiments with a tapered fiber. Coupling 40-fs 0.6-nJ pulses of 1.25-μm Cr:forsterite las...

D. A. Akimov, A. A. Ivanov, M. V. Alfimov… in Journal of Experimental and Theoretical Ph… (2001)

Article

Absolute frequency measurement of iodine lines with a femtosecond optical synthesizer

We have used a single laser femtosecond optical frequency synthesizer together with a widely tunable Nd:YAG laser to measure the absolute frequency of several absorption lines in molecular iodine around 532 nm...

R. Holzwarth, A.Yu. Nevsky, M. Zimmermann, Th. Udem, T.W. Hänsch… in Applied Physics B (2001)

Article

Supernarrow saturated absorption resonances in weakly coupled two resonant optical cavities

The advantages of the weakly coupled two resonant optical cavities (hereinafter referred to as three-mirror cavity) used for observation of the supernarrow saturated absorption resonances are shown. Among thes...

S.N. Bagayev, E.A. Titov in Applied Physics B (2001)

Chapter

Frequency Comparison and Absolute Frequency Measurement of I₂-stabilized Lasers at 532 nm

We present a frequency comparison and an absolute frequency measurement of two independent I₂-stabilized frequency-doubled Nd:YAG lasers at 532 nm, one set up at the Institute of Laser Physics, No vosibirsk, Russ...

A. Yu. Nevsky, R. Holzwarth, J. Reichert, Th. Udem, T. W. Hänsch… in The Hydrogen Atom (2001)

Article

Pulsed laser spectroscopy in muonium and deuterium

The 1s–2s energy interval in the muonium (μ⁺e⁻) atom has been measured by Doppler free two photon laser spectroscopy. A value of 2455528941.0(9.8) MHz has been obtained in good agreement with quantum electrodynam...

V. Meyer, S.N. Bagayev, P.E.G. Baird, P. Bakule, M.G. Boshier… in Hyperfine Interactions (2000)

Article

A femtosecond self-mode-locked Ti:sapphire laser with high stability of pulse-repetition frequency and its applications

The spectral characteristics and stability of a frequency of intermode beats of a fs self-mode-locked Ti:sapphire laser are investigated. An active method is used to obtain high stability. The frequency stabil...

S.N. Bagayev, S.V. Chepurov, V.M. Klementyev, S.A. Kuznetsov… in Applied Physics B (2000)

Article

Acentric cubic NaClO3– a new crystal for Raman lasers

crystal were investigated. At room temperature under picosecond excitation efficient high-order stimulated Raman scattering in the visible and near-IR regions was observed. A total conversion efficiency of th...

A.A. Kaminskii, S.N. Bagayev, J. Hulliger, H. Eichler, J. Findeisen… in Applied Physics B (1998)