Igor Protsenko - Academia.edu (original) (raw)

Papers by Igor Protsenko

arXiv (Cornell University), Jan 16, 2024

Nonlinear Guided Waves and Their Applications, 2004

CSs have been theoretically predicted and recently experimentally demonstrated in broad area, ver... more CSs have been theoretically predicted and recently experimentally demonstrated in broad area, vertical cavity, driven semiconductor lasers (VCSELs) slightly below the lasing threshold. Above threshold, the simple adiabatic elimination of the polarization variable is not correct, leading to oscillatory instabilities with a spuriously high critical wave-number. To achieve real insight on the complete dynamical problem, we study here the complete system of equations and find regimes where a Hopf instability, typical of lasers above threshold, affects the lower intensity branch of the homogeneous steady state, while the higher intensity branch is unstable due to a Turing instability. Numerical results obtained by direct integration of the dynamical equations show that writable/erasable CSs are possible in this regime, sitting on unstable background.

arXiv (Cornell University), Dec 27, 2022

Kvantovaia Elektronika Moscow, Aug 1, 1991

Kvantovaia Elektronika Moscow, Nov 1, 1985

Technical Physics Letters, 2013

Proceedings of SPIE, Jan 24, 2006

Lasing (dipole nanolaser) and photo-effect in a nanostructure consisted of metallic nanoparticles... more Lasing (dipole nanolaser) and photo-effect in a nanostructure consisted of metallic nanoparticles and two-level systems (as quantum dots) are predicted. Experimental results on various methods of manufacturing and studying of optical properties of heterogeneous thin layers with nanoparticles of noble metals for future applications in nanolasers and photo voltaic cells are presented.

arXiv (Cornell University), Apr 15, 2023

Nonlinear Dynamics in Optical Systems, 1990

Annalen der Physik, Nov 22, 2022

2017 Progress In Electromagnetics Research Symposium - Spring (PIERS), May 1, 2017

Electrically Driven Optical Antennas represent promising issues for integrated plasmonic nanosour... more Electrically Driven Optical Antennas represent promising issues for integrated plasmonic nanosources. However, their low quantum efficiency (QE) remains a major hurdle. To address this issue, we analyze the different light emission mechanisms in planar nanoscale devices. We found that the electrical properties of the device are dictating the processes at play. For low device conductance, photons are essentially emitted by inelastic tunneling events and the applied voltage sets the highest photon energy. For high conductance gap antennas, we show that the spectrum released by the device originates from the spontaneous emission of out-of-equilibrium electronic distribution. We then propose a novel route for increasing the QE. Estimation shows that if the nanoantennas are excited by electrons passing ballistically through mesoscopic contacts constituting the antenna, the excitation QE may reach ∼ 0.01–0.1. Finally, we explore an alternative approach based on charge injection in semiconductor Mie resonators.

Успехи физических наук, 2012

Journal of Modern Optics, Feb 1, 1996

Abstract We consider a cavity containing both a χ(2)-nonlinear material and a laser two-level med... more Abstract We consider a cavity containing both a χ(2)-nonlinear material and a laser two-level medium for the cases of self-frequency-doubling and self-down-converting configurations. For both situations, the squeezing properties of the two fields are analysed in detail, while special attention is devoted to the problem of ‘noiseless amplification’ of a small monochromatic signal injected in the lower frequency mode.

arXiv (Cornell University), Dec 9, 2013

Photoelectric properties of metamaterials containing non-centrosymmetric, similarly oriented meta... more Photoelectric properties of metamaterials containing non-centrosymmetric, similarly oriented metallic nanoparticles embedded in a homogeneous semiconductor matrix are theoretically studied. Due to the asymmetric shape of the nanoparticle boundary, photoelectron emission acquires a preferred direction, resulting in a photocurrent flow in that direction when nanoparticles are uniformly illuminated by a homogeneous plane wave. This effect is a direct analogy of the photogalvanic (or bulk photovoltaic) effect known to exist in media with non-centrosymmetric crystal structure, such as doped lithium niobate or bismuth ferrite, but is several orders of magnitude stronger. Termed the giant plasmonic photogalvanic effect, the reported phenomenon is valuable for characterizing photoemission and photoconductive properties of plasmonic nanostructures, and can find many uses for photodetection and photovoltaic applications.

Proceedings of SPIE, Sep 1, 2005

We study theoretically a broad-area vertical cavity surface emitting laser (VCSEL) with a satura... more We study theoretically a broad-area vertical cavity
surface emitting laser (VCSEL) with a saturable absorber. We
show numerically the presence of cavity solitons in the system:
they exist as solitary structures formed through amodulationally
unstable homogeneous lasing state that coexists with a background
with zero intensity. Such a peculiar scenario endows
the solitons with unique properties compared to cavity solitons
in most previously studied optical systems. In particular, these
solitons do not as such rely on a proper phase of the addressing
pulses to be either created or deleted.We show that exciting and
deleting the solitons depend crucially on whether a threshold in
the soliton peak has been reached.

arXiv (Cornell University), Apr 8, 2022

We experimentally demonstrate the existence and the control of cavity solitons in externally driv... more We experimentally demonstrate the existence and the control of cavity solitons in externally driven vertical-cavity semiconductor lasers above threshold. A model including material polarization dynamics is used to predict and confirm the experimental findings.