Department of Physics
Recent Submissions
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Multipole radiation in quantum domain
(Springer, 2003)We review recent results based on the application of spherical wave representation to description of quantum properties of multipole radiation generated by atomic transitions. In particular, the angular momentum Angular ... -
Physics and applications of defect structures in photonic crystals
(Springer, 2003)We propose and demonstrate a new type of propagation mechanism for electromagnetic waves in photonic band gap materials. Photons propagate through coupled cavities due to interaction between the highly localized neighboring ... -
Different scattering regimes in two-dimensional Bose-Einstein condensates
(Springer, 2003)Motivated by the recent efforts to produce low-dimensional condensates, we study the ground-state density profiles of two-dimensional Bose-Einstein condensed atoms at zero temperature within a mean-field theory. The interplay ... -
Preface
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Preface
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Preface
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10 W, 10 ns, 50 kHz all-fiber laser at 1.55 µm
(Optical Society of America, 2012)We report on an all-fiber, singlemode MOPA system at 1.55 µm producing 10-ns, 200-µJ pulses with 20 kW of peak power and utilize it to micromachine crystalline Si, which is largely transparent at this wavelength. -
Burst-mode Yb fiber amplifier producing 40 µJ individual pulse energyBurst-mode Yb fiber amplifier producing 40 µJ individual pulse energy
(Optical Society of America, 2012)We report 40-µJ individual pulse energy for 100-ns long amplified bursts with homogenized energy distribution from a 1-kHz Yb-fiber amplifier. Initial results on micromachining using burst-mode femtosecond pulses are ... -
Macroscopic assembly of indefinitely long and parallel nanowires into large area photodetection circuitry
(Optical Society of America, 2012)We demonstrate a novel fabrication technique of a photodetection circuitry with light sensitive pixels consisting of hundreds of long and parallel selenium nanowires. Using 10x10 pixel format, alphabetic characters were ... -
Predictions of single-layer honeycomb structures from first principles
(Cambridge University Press, 2017) -
Persistent current in a mesoscopic ring with strongly coupled polarons
(Springer, 2000)We investigate influence of the electron-phonon interaction on persistent current in a mesoscopic ring threaded by a Aharonov-Bohm flux Φ. We find that all thermodynamic quantities are still periodic in Φ with a period Φo ... -
Persistent current and persistent charge in nanostructures
(Springer, 1997)Quantúm effects in the interaction of electromagnetic field with small, but not microscopically small, metallic particles and rings are investigated. The aspects of mesoscopic systems related to time-independent (or magnetic) ... -
Optical spectroscopy of microcavities
(Springer, 1997)Microcavities, such as microspheres, possess morphology-dependent resonances (MDR’s). In this chapter light coupling mechanisms to MDR’s is examined. The novel mechanism of excitation of the microsphere with an optical ... -
Nonlinear phenomena in metallic contacts
(Springer, 2000)We review and extend theoretical approaches to nonlinear and nonequilibrium effects in metallic microcontacts ranging in their dimension from the atomic to macroscopic sizes. Atomic contacts are shown to quantize their ... -
Non-decaying currents in normal metals
(Springer, 2000)In a present paper, we review cases when stable, time-independent currents may flow in normal metals, both single-connected or multiple-connected, in presence of magnetic field or the field of vector potential. These include ... -
Negative refraction and subwavelength focusing in two-dimensional photonic crystals
(Springer-Verlag, 2007)We experimentally and theoretically demonstrate negative refraction and focusing on electromagnetic (EM) waves by using two-dimensional photonic crystal slabs at microwave frequencies. Negative refraction is observed both ... -
Microscopic aspects of friction
(Kluwer Academic Publishers, 1997)In this work we first present an analysis of the interaction energy and short range forces between two parallel and atomically flat metal slabs. Using the self-consistent field pseudopotential method within the local density ... -
Locality of quantum electromagnetic radiation
(Apeiron, 2002) -
Preface
(Kluwer Academic Publishers, 1997) -
Conductance in nanowires
(Kluwer Academic Publishers, 1997)This paper presents a detailed analysis of conductance and atomic structure in metal nanowires under tensile stress. We calculate the variation of conductance with the crossection of the constriction between two reservoirs, ...
