Dr. Dmitry S. Smirnov Profile

Dr. Dmitry S. Smirnov

at National Research Univ of ITMO

SPIE Involvement:

Author

Publications (9)

SPIE Journal Paper | 10 October 2012

Dynamics of laser-induced damage of spherical nanoparticles by high-intensity ultrashort laser pulses

Vladimir Komolov, Vitaly Gruzdev, Sergey Przhibelskii, Dmitry Smirnov

OE, Vol. 51, Issue 12, 121816, (October 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.12.121816

KEYWORDS: Nanoparticles, Ions, Laser induced damage, Ionization, Spherical lenses, Chemical species, Ultrafast phenomena, Particles, Pulsed laser operation, Atmospheric particles

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Proceedings Article | 28 February 2011 Paper

Photo-ionization and modification of nanoparticles on transparent substrates by ultrashort laser pulses

Vitaly Gruzdev, Vladimir Komolov, Hao Li, Qingsong Yu, Sergey Przhibel'skii, Dmitry Smirnov

Proceedings Volume 7996, 79960J (2011) https://doi.org/10.1117/12.887181

KEYWORDS: Nanoparticles, Gold, Ions, Laser ablation, Particles, Femtosecond phenomena, Silica, Glasses, Atmospheric particles, Pulsed laser operation

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The objective of this combined experimental and theoretical research is to study the dynamics and mechanisms of nanoparticle interaction with ultrashort laser pulses and related modifications of substrate surface. For the experimental effort, metal (gold), dielectric (SiO2) and dielectric with metal coating (about 30 nm thick) spherical nanoparticles deposited on glass substrate are utilized. Size of the particles varies from 20 to 200 nm. Density of the particles varies from low (mean inter-particle distance 100 nm) to high (mean inter-particle distance less than 1 nm). The nanoparticle assemblies and the corresponding empty substrate surfaces are irradiated with single 130-fs laser pulses at wavelength 775 nm and different levels of laser fluence. Large diameter of laser spot (0.5-2 mm) provides gradient variations of laser intensity over the spot and allows observing different laser-nanoparticle interactions. The interactions vary from total removal of the nanoparticles in the center of laser spot to gentle modification of their size and shape and totally non-destructive interaction. The removed particles frequently form specific sub-micrometer-size pits on the substrate surface at their locations. The experimental effort is supported by simulations of the nanoparticle interactions with high-intensity ultrashort laser pulse. The simulation employs specific modification of the molecular dynamics approach applied to model the processes of non-thermal particle ablation following laser-induced electron emission. This technique delivers various characteristics of the ablation plume from a single nanoparticle including energy and speed distribution of emitted ions, variations of particle size and overall dynamics of its ablation. The considered geometry includes single isolated particle as well a single particle on a flat substrate that corresponds to the experimental conditions. The simulations confirm existence of the different regimes of laser-nanoparticle interactions depending on laser intensity and wavelength. In particular, implantation of ions departing from the nanoparticles towards the substrate is predicted.

Proceedings Article | 15 January 2008 Paper

The role of plasmon-polaritons and waveguide modes in surface modification of semiconductors by ultrashort laser pulses

G. Martsinovsky, G. Shandybina, D. Smirnov, S. Zabotnov, L. Golovan, V. Yu. Timoshenko, P. Kashkarov

Proceedings Volume 6985, 698502 (2008) https://doi.org/10.1117/12.786844

KEYWORDS: Dielectrics, Silicon, Semiconductor lasers, Femtosecond phenomena, Electrons, Semiconductors, Waveguide modes, Metals, Polaritons, Plasma

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Proceedings Article | 25 January 2007 Paper

Destruction of the nano-size solid particles under femtosecond laser pulse action

Vitaly Gruzdev, Vladimir Komolov, Sergey Przhibel'skii, Dmitry Smirnov

Proceedings Volume 6596, 65960P (2007) https://doi.org/10.1117/12.726412

KEYWORDS: Ions, Nanoparticles, Particles, Ionization, Solids, Electrons, Scattering, Femtosecond phenomena, Motion analysis, Laser induced damage

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Proceedings Article | 22 May 2006 Paper

Dynamics of spreading of a spherical particle ionized by intense ultra-short laser pulse

V. Gruzdev, V. Komolov, S. Przhibel'skii, D. Smirnov

Proceedings Volume 6256, 625603 (2006) https://doi.org/10.1117/12.679706

KEYWORDS: Ions, Particles, Ionization, Solids, Crystals, Pulsed laser operation, Optical spheres, Atmospheric particles, Spherical lenses, Numerical modeling

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Proceedings Article | 15 July 2004 Paper

Propagation and excitation of resonant cylindrical surface polaritons

Mikhail Libenson, George Martsinovsky, Dmitry Smirnov

Proceedings Volume 5506, (2004) https://doi.org/10.1117/12.579995

KEYWORDS: Waveguides, Polaritons, Near field, Cladding, Metals, Radio propagation, Signal attenuation, Wave propagation, Light wave propagation, Dielectrics

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Proceedings Article | 23 September 2003 Paper

Resonant surface polaritons of a cylindrical three-layer waveguide in far IR-range

Mikhail Libenson, D. Smirnov

Proceedings Volume 5067, (2003) https://doi.org/10.1117/12.518602

KEYWORDS: Waveguides, Metals, Polaritons, Signal attenuation, Near field optics, Radio propagation, Near field, Near field scanning optical microscopy, Wave propagation, Far infrared

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Proceedings Article | 8 July 2003 Paper

Transformation of incident radiation into cylindrical surface polaritons

Michael Libenson, George Martsinovsky, Dmitry Smirnov

Proceedings Volume 5036, (2003) https://doi.org/10.1117/12.498649

KEYWORDS: Waveguides, Polaritons, Signal attenuation, Metals, Near field optics, Light wave propagation, Electromagnetic radiation, Dielectrics, Radio propagation, Optical components

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Proceedings Article | 1 April 2002 Paper

Resonant surface polaritons of the cylindrical near-field tip

M. Libenson, G. Martsinovsky, Dmitry Smirnov

Proceedings Volume 4750, (2002) https://doi.org/10.1117/12.464468

KEYWORDS: Waveguides, Polaritons, Near field, Metals, Cladding, Wave propagation, Near field optics, Numerical simulations, Environmental sensing, Signal attenuation

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Showing 5 of 9 publications

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