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We will present a futher understanding of the threshold transition in lasers operating at nanoscale, by measuring the threshold transition from a quantum, statistical and dynamical points of view at room temperature and telecommunication wavelengths.
Photonic Band Gap (PBG) materials [1,2] are artificial, periodic, dielectrics that enable engineering of the most fundamental properties of electromagnetic waves. These include the laws of refraction, diffraction, and spontaneous emission of light. Unlike traditional semiconductors that rely on the propagation of electrons through an atomic lattice, PBG materials execute their novel functions through...
Short-pulse fiber lasers based on dissipative-soliton formation offer major performance and practical advantages over prior fiber lasers. Recent developments will be reviewed.
Programmable optical pulse shaping, allowing generation of nearly arbitrarily shaped ultrafast optical waveforms, is reviewed. After outlining the fundamentals, new directions in pulse shaping and selected applications are discussed.
The field of plasmonics is currently at the exciting stage of a move from passive structures to hybrid assemblies with active functions. This tutorial will provide an overview of current trends in this development.
Nonlinear optics in the past 60 years has been full of excitement and created tremendous impact in many disciplines. New laser technology has been the prime motive force behind the advances of the field.
Controlled nuclear fusion has long been sought as a global energy source and ignition of a laser fusion target will soon be realized. Fundamentals and requirements for this ultimate laser application will be presented.
We analyze theoretically a novel cavity electromechanical system where a mechanical resonator modulates the damping rate of a driven cavity. Destructive quantum noise interference allows ground state cooling even in the unresolved sideband regime.
New approaches to create high-confinement surface waveguides based on spoof surface plasmon polaritons in the infrared part of the spectrum will be presented, focusing on structures with improved trade-off between bandwidth and confinement.
Trapped atomic ion quantum memories can be locally entangled via the Coulomb interaction and remotely entangled based on probabilistic photonic interfaces. Both versions are presented, highlighting their features and drawbacks when applied to quantum computing and quantum communication protocols.
A new approach (ThinZag®) for scaling Nd:YAG solid-state slab lasers to high power levels is described. Using an innovative optical configuration, thin slabs of solid-state gain material are immersed in a flowing cooling fluid, resulting in improved thermal management. Measurements at the ~1 kW level were conducted to compare Nd:YAG ceramic with Nd:YAG crystalline slabs. The ceramic slabs demonstrated...
A general discussion of radiative interference processes in plasmonic nanostructures is presented. It will be shown that the interference between subradiant and superradiant plasmon modes can induce pronounced Fano resonances it the optical spectra.
We have recently demonstrated strong coupling between light and a micromechanical system. This provides a new level of quantum optical control over mechanics by accessing interactions beyond the rotating wave approximation.
We show that (meta)materials with hyperbolic dispersion exhibit a broad bandwidth singularity in the photonic density of states. As opposed to an isolated singularity found in other physical systems, with the finite density of states in its vicinity, for the systems with hyperbolic dispersion the photonic density of states diverges at every frequency over a finite bandwidth. This behavior leads to...
The physical effects leading to filament formation of intense femtosecond laser pulses propagating in air will be introduced. Recent developments and potential applications of filamentation will be described.
We measure the second order correlation function for metastable helium atoms released from an ultracold trap source and observe bunching between thermal atoms. When correlations between Bose-Einstein condensed atoms are measured no bunching is observed.
Optically induced magnetization, whose relaxation time is of the order of a hundred picoseconds, and coherent oscillations of magnons in terahertz region were observed in an antiferromagnet NiO by polarization spectroscopy with the pump-probe technique.
This paper discusses the optical polarization anisotropic of a c-plane InGaN/AlInN quantum well under the tensile strain. The calculation results indicate that with particular In composition of AlInN alloy for the tensile strain, it is possible to reduce the quantum-confined Stark effect and make an out-planed polarized light source for edge emitting laser diodes or light emitting diodes.
Coherent G-mode phonon oscillations in few-layer graphene films were generated using ultrafast pump-probe spectroscopy. The frequency and the decay time were different depending on the thickness of the graphene layers.
Solar-cell efficiencies have exceeded 40% in recent years by use of multiple materials that span the solar spectrum, growth of these materials with near-perfect quality, and use of concentration. Growth of near-perfect semiconductor materials is possible when the lattice constants of the materials are matched or nearly matched to that of a single-crystal substrate.
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