feature article - Electrical and Computer Engineering
... conduction electrons to oscillate collectively. The term LSPR is used because this collective oscillation is localized within the near surface region of the nanoparticle. The two consequences of exciting the LSPR are (1) selective photon absorption and (2) generation of locally enhanced or amplified ...
... conduction electrons to oscillate collectively. The term LSPR is used because this collective oscillation is localized within the near surface region of the nanoparticle. The two consequences of exciting the LSPR are (1) selective photon absorption and (2) generation of locally enhanced or amplified ...
Palladium Ultra Thin Layer Profiles Evaluation by Evanescent Light
... investigate nanostructures profiles of Pd sputtered thin films in the ultra-thin thickness range of 1 - 10 nm [1]. DELI is an optical evanescent waves microscopy technique based on capturing the light extracted by nano layers deposited on a substrate which also serves as a waveguide [2,3]. The DELI ...
... investigate nanostructures profiles of Pd sputtered thin films in the ultra-thin thickness range of 1 - 10 nm [1]. DELI is an optical evanescent waves microscopy technique based on capturing the light extracted by nano layers deposited on a substrate which also serves as a waveguide [2,3]. The DELI ...
1. Introduction
... This intuitive explanation however fails to account for two-photon interference, which occurs if the two photons are indistinguishable in all degrees of freedom, i.e. the photons have the same wavelength, polarization and spatio-temporal mode. In such a case the first two possibilities - when both ...
... This intuitive explanation however fails to account for two-photon interference, which occurs if the two photons are indistinguishable in all degrees of freedom, i.e. the photons have the same wavelength, polarization and spatio-temporal mode. In such a case the first two possibilities - when both ...
Laser - nptel
... 2.14 Types of Lasers and Applications: Lasers have found wide applications in areas as diverse as optical communications, medical surgery, welding technology, entertainment electronics etc. What makes such veritable use of lasers possible is the highly collimated nature of the laser beams and the co ...
... 2.14 Types of Lasers and Applications: Lasers have found wide applications in areas as diverse as optical communications, medical surgery, welding technology, entertainment electronics etc. What makes such veritable use of lasers possible is the highly collimated nature of the laser beams and the co ...
Energy gap–refractive index relations in semiconductors – An
... are represented by differential oscillator densities that occur at distributed resonant frequencies. The combined polarizabilities are summed and replaced by an integral over the relevant frequencies. These differential oscillators are identified through the wave number and occupation probability based ...
... are represented by differential oscillator densities that occur at distributed resonant frequencies. The combined polarizabilities are summed and replaced by an integral over the relevant frequencies. These differential oscillators are identified through the wave number and occupation probability based ...
Resonant-Cavity Light-Emitting Diodes: a review
... planar cavity will in the first place affect the extraction efficiency. The internal intensity distribution is not longer isotropic due to interference effects (or density of states effects). The basics of dipole emission in planar cavities will be shortly reviewed using a classical approach valid i ...
... planar cavity will in the first place affect the extraction efficiency. The internal intensity distribution is not longer isotropic due to interference effects (or density of states effects). The basics of dipole emission in planar cavities will be shortly reviewed using a classical approach valid i ...
Thermal Conductivity
... • Equipartition: 1/2kBT per degree of freedom • In 3-D electron gas this means 3/2kBT per electron • In 3-D atomic lattice this means 3kBT per atom (why?) • So one would expect: CV = du/dT = 3/2nekB + 3nakB ...
... • Equipartition: 1/2kBT per degree of freedom • In 3-D electron gas this means 3/2kBT per electron • In 3-D atomic lattice this means 3kBT per atom (why?) • So one would expect: CV = du/dT = 3/2nekB + 3nakB ...
High-temperature ultrafast polariton parametric amplification in
... the excitation angle (Fig. 1). A small number of states can be excited at a given angle, and quantum degeneracy (more than one polariton per state) is achieved with relatively low excitation densities. The bosonic statistics strongly enhances some particular scattering processes, provided that the d ...
... the excitation angle (Fig. 1). A small number of states can be excited at a given angle, and quantum degeneracy (more than one polariton per state) is achieved with relatively low excitation densities. The bosonic statistics strongly enhances some particular scattering processes, provided that the d ...
PPLN waveguide for quantum communication | SpringerLink
... poled lithium niobate (PPLN) waveguide. Degenerate twin photons at 1 314 nm wavelength are created by spontaneous parametric down-conversion and coupled into standard telecom fibers. Our PPLN waveguide features a very high conversion efficiency of about 10−6 , roughly 4 orders of magnitude more than ...
... poled lithium niobate (PPLN) waveguide. Degenerate twin photons at 1 314 nm wavelength are created by spontaneous parametric down-conversion and coupled into standard telecom fibers. Our PPLN waveguide features a very high conversion efficiency of about 10−6 , roughly 4 orders of magnitude more than ...
The Onset of Matter-Wave Amplification in a Superradiant Bose
... from those seen in previous light-scattering experiments. This phenomenon can only be explained by optical stimulation, showing that the previous description of superradiance as atomic stimulation is incomplete and that matter-wave amplification in Bose-Einstein condensates is suppressed at short tim ...
... from those seen in previous light-scattering experiments. This phenomenon can only be explained by optical stimulation, showing that the previous description of superradiance as atomic stimulation is incomplete and that matter-wave amplification in Bose-Einstein condensates is suppressed at short tim ...
Nanosphere Lithography: Effect of Substrate on the Localized
... most likely involve isolating or embedding nanoparticle constituents on or in a solid substrate support. Thus, determining the substrate contribution to the optical properties of the supported nanoparticles is an important endeavor. The influence of the substrate on the LSPR of small (∼2 nm diameter ...
... most likely involve isolating or embedding nanoparticle constituents on or in a solid substrate support. Thus, determining the substrate contribution to the optical properties of the supported nanoparticles is an important endeavor. The influence of the substrate on the LSPR of small (∼2 nm diameter ...
Luminescence properties of a Fibonacci photonic
... localization, coherent back scattering, optical Hall Effect, among others. At the same time, very little is known about propagation of light in media with deterministic and yet nonperiodic spatial profile of refractive index [2]. Such structures, called quasicrystals, may exist in one-, two-, or thr ...
... localization, coherent back scattering, optical Hall Effect, among others. At the same time, very little is known about propagation of light in media with deterministic and yet nonperiodic spatial profile of refractive index [2]. Such structures, called quasicrystals, may exist in one-, two-, or thr ...
Frequency splitter based on the directional
... Subwavelength guiding and manipulating light is a challenge that attracts much of the scientific effort, paving the way towards the minimization of electromagnetic components. Photonic Crystals (PC) and metallic structures, that in the optical regime support the propagation of Surface Plasmons Polar ...
... Subwavelength guiding and manipulating light is a challenge that attracts much of the scientific effort, paving the way towards the minimization of electromagnetic components. Photonic Crystals (PC) and metallic structures, that in the optical regime support the propagation of Surface Plasmons Polar ...
Optical spectroscopy and electronic structure of the face-centered icosahedral quasicrystals Zn- R
... from the recorded values, are presented in Table I. The optical surfaces of single-grain QC samples were prepared by a careful mechanical polishing as described in our previous work.20 Additionally, as a final surface-preparation procedure, we employed a plasma etching technique by Ar+ ion sputter ...
... from the recorded values, are presented in Table I. The optical surfaces of single-grain QC samples were prepared by a careful mechanical polishing as described in our previous work.20 Additionally, as a final surface-preparation procedure, we employed a plasma etching technique by Ar+ ion sputter ...
Introduction to Isotope Effect
... are isotopes of the elements forming a crystal. If the impurity concentration (isotopes) in a crystal is high enough that the interaction between impurity atoms (ions) plays an important role, such a system is called a mixed crystal with a various degree of disorder. There are two types of disordere ...
... are isotopes of the elements forming a crystal. If the impurity concentration (isotopes) in a crystal is high enough that the interaction between impurity atoms (ions) plays an important role, such a system is called a mixed crystal with a various degree of disorder. There are two types of disordere ...
Narrowband photon pair generation and waveform reshaping
... computation, quantum cryptography, quantum imaging, and other quantum optics related areas [1–3]. There are some early works on photon pair generation in atomic medium, through positronium annihilation [4], or atomic ...
... computation, quantum cryptography, quantum imaging, and other quantum optics related areas [1–3]. There are some early works on photon pair generation in atomic medium, through positronium annihilation [4], or atomic ...
Absorption Enhancement in Ultrathin Crystalline Silicon Solar Cells
... shown in Figure 1c, has very different structural characteristics, compared with the optimal nanocone structure for antireflection in Figure 1b. The spectrum in Figure 2c shows that the absorption enhancement due to light trapping is primarily in the longer wavelength range where the silicon absorpt ...
... shown in Figure 1c, has very different structural characteristics, compared with the optimal nanocone structure for antireflection in Figure 1b. The spectrum in Figure 2c shows that the absorption enhancement due to light trapping is primarily in the longer wavelength range where the silicon absorpt ...
223
... between cyanines and PSB in the region of the conical intersection, the initial excited-state evolution (near the FranckCondon FC point) of the cyanine models considered in this work can be described using the two-state two-mode model reported for the retinal PSBs.12,13 A detailed analysis of the co ...
... between cyanines and PSB in the region of the conical intersection, the initial excited-state evolution (near the FranckCondon FC point) of the cyanine models considered in this work can be described using the two-state two-mode model reported for the retinal PSBs.12,13 A detailed analysis of the co ...
How laser works
... Solid-state lasers use a crystalline or glass rod which is "doped" with ions that provide the required energy states. ...
... Solid-state lasers use a crystalline or glass rod which is "doped" with ions that provide the required energy states. ...
Generation of Polarization Entangled Photon Pairs in a Planar
... bulk crystals [1, 2] and channel waveguides [3–6]. Entangled photon pairs generated through SPDC process in bulk nonlinear optic crystals suffer from a number of problems such as low efficiency, design complication, low interaction length, and are hard to implement for practical applications. In ord ...
... bulk crystals [1, 2] and channel waveguides [3–6]. Entangled photon pairs generated through SPDC process in bulk nonlinear optic crystals suffer from a number of problems such as low efficiency, design complication, low interaction length, and are hard to implement for practical applications. In ord ...
Engineering biphoton wave packets with an electromagnetically
... modulation of the control fields plus the modulated group velocities of the anti-Stokes field. Without the use of the cavity, the spectrum narrowing achieved here is useful for producing narrow-band biphotons with higher spectral brightness. If the optical depth of the medium could be made high enou ...
... modulation of the control fields plus the modulated group velocities of the anti-Stokes field. Without the use of the cavity, the spectrum narrowing achieved here is useful for producing narrow-band biphotons with higher spectral brightness. If the optical depth of the medium could be made high enou ...
Lecture 11: Semiconductor lasers and light
... *assuming n-type material with a carrier concentration no = 1017 cm-3 and defect centers with a concentration 1015 cm-3 at T = 300 K ...
... *assuming n-type material with a carrier concentration no = 1017 cm-3 and defect centers with a concentration 1015 cm-3 at T = 300 K ...
Structural and Functional Characterization of Luminescent Silver
... conjugated to an enzyme, bovine pancreatic R-chymotrypsin (CHT). The structural characterization of AgCHT nanobioconjugates was done using steady-state UV-vis absorption/photoluminescence spectroscopy and high-resolution transmission electron microscopy. By use of the spherical jellium model, the em ...
... conjugated to an enzyme, bovine pancreatic R-chymotrypsin (CHT). The structural characterization of AgCHT nanobioconjugates was done using steady-state UV-vis absorption/photoluminescence spectroscopy and high-resolution transmission electron microscopy. By use of the spherical jellium model, the em ...
Qualifying Exam Peter Langston January 21 , 2010
... intensity and predicts a continuous variation of the ionization probability with photon energy ...
... intensity and predicts a continuous variation of the ionization probability with photon energy ...