Ultra cold atoms and Bose-Einstein condensation for quantum
... polarisation. The atoms then see a periodic conservative dipole potential depending on their internal state. On the other hand, optical pumping, a dissipative effect, favours the population into the most shifted states, which are the lowest in energy. As they move inside the molasses, atoms thus lose ...
... polarisation. The atoms then see a periodic conservative dipole potential depending on their internal state. On the other hand, optical pumping, a dissipative effect, favours the population into the most shifted states, which are the lowest in energy. As they move inside the molasses, atoms thus lose ...
Femtosecond self-guided atmospheric light strings
... severe thunderstorms18 and several experimental groups are working worldwide on this important problem. In addition, the ability to generate a white-light continuum at a preselected location in the upper atmosphere has huge potential in remote sensing and ladar applications. In fact, an experiment b ...
... severe thunderstorms18 and several experimental groups are working worldwide on this important problem. In addition, the ability to generate a white-light continuum at a preselected location in the upper atmosphere has huge potential in remote sensing and ladar applications. In fact, an experiment b ...
Fiber Bragg Gratings
... such as superlattices or when insight into dispersion or microstructures characteristics is required. Bloch wave analysis can be extended to aperiodic structures using numerical techniques. In addition to coupled mode theory and Bloch mode theory, other purely numerical techniques based on matrix me ...
... such as superlattices or when insight into dispersion or microstructures characteristics is required. Bloch wave analysis can be extended to aperiodic structures using numerical techniques. In addition to coupled mode theory and Bloch mode theory, other purely numerical techniques based on matrix me ...
RESONANCE WAVELENGTH DEPENDENCE AND MODE
... lengths of the nanoantenna, but the profile minimum values do not reach the zero in the nanoantennas, due to the penetration of the field in the metal layer (skin effect). Furthermore, as the length increases, the difference among minima and maxima is accentuated showing the mode formation process a ...
... lengths of the nanoantenna, but the profile minimum values do not reach the zero in the nanoantennas, due to the penetration of the field in the metal layer (skin effect). Furthermore, as the length increases, the difference among minima and maxima is accentuated showing the mode formation process a ...
Third-harmonic Rayleigh scattering: theory and experiment
... MEDIA When an incident light wave at frequency 1 interacts with a medium, a nonlinear polarization P3 at frequency 3 = 31 is induced: ...
... MEDIA When an incident light wave at frequency 1 interacts with a medium, a nonlinear polarization P3 at frequency 3 = 31 is induced: ...
A finite element beam propagation method for simulation of liquid
... is then again used to calculate a next, more accurate, value for the derivative at z = 0 similar as in Eq. (25). It can be shown that if this wide angle iteration procedure is repeated for a sufficient number N of steps, the initial derivative at z = 0 and the transverse field at z = ∆z will converg ...
... is then again used to calculate a next, more accurate, value for the derivative at z = 0 similar as in Eq. (25). It can be shown that if this wide angle iteration procedure is repeated for a sufficient number N of steps, the initial derivative at z = 0 and the transverse field at z = ∆z will converg ...
mobile protons on silica and alumina surfaces protones moviles
... substituted pyridines are H-bonded to surface silanol groups. This bond type gives rise to typical perturbations in the OH stretching region of the infrared spectra. Additionally, a continuous absorption extends from the OH stretching band towards lower wavenumbers. The optical density of the contin ...
... substituted pyridines are H-bonded to surface silanol groups. This bond type gives rise to typical perturbations in the OH stretching region of the infrared spectra. Additionally, a continuous absorption extends from the OH stretching band towards lower wavenumbers. The optical density of the contin ...
Sample Pages
... nearly constant, unless the fiber is very long. The high loss for cladding modes is convenient, e.g., when checking how efficiently light is launched into the fiber core, or when measuring the propagation losses of the fiber core. Residual light in cladding modes can be disturbing, e.g., when one tr ...
... nearly constant, unless the fiber is very long. The high loss for cladding modes is convenient, e.g., when checking how efficiently light is launched into the fiber core, or when measuring the propagation losses of the fiber core. Residual light in cladding modes can be disturbing, e.g., when one tr ...
High-Repetition TDS System
... optical pulse with a time width corresponding to the bandwidth is generated (i.e., a picosecond pulse). When the optical pulse is input to the DF-DDF, the optical pulse is output after the pulse width is compressed (to the femtosecond order) by adiabatic soliton compression. Figure 4 shows the exper ...
... optical pulse with a time width corresponding to the bandwidth is generated (i.e., a picosecond pulse). When the optical pulse is input to the DF-DDF, the optical pulse is output after the pulse width is compressed (to the femtosecond order) by adiabatic soliton compression. Figure 4 shows the exper ...
Padgett, M. (2014) Light`s twist. Proceedings of the Royal Society of
... which conventionally use tightly focused laser beams to trap and then manipulate micrometresized dielectric (i.e. transparent) particles [11]. Many groups worldwide have since replaced the Gaussian laser beam in optical tweezers with a tightly focused OAM beam to both trap micrometre-sized particles ...
... which conventionally use tightly focused laser beams to trap and then manipulate micrometresized dielectric (i.e. transparent) particles [11]. Many groups worldwide have since replaced the Gaussian laser beam in optical tweezers with a tightly focused OAM beam to both trap micrometre-sized particles ...
Rapid fabrication of 3D terahertz split ring resonator arrays by novel
... In order to advance lithographic capabilities for future applications, innovative strategies must be available in a scalable and cost-effective set of techniques. This is especially the case when approaching the fabrication of complex 3D architectures not amenable to conventional layerby-layer proce ...
... In order to advance lithographic capabilities for future applications, innovative strategies must be available in a scalable and cost-effective set of techniques. This is especially the case when approaching the fabrication of complex 3D architectures not amenable to conventional layerby-layer proce ...
PDF only - at www.arxiv.org.
... be applied to the reciprocal geometry, where the light couples from a high-index media [such as (O)LEDs or scintillators] into lower-index surroundings, which is severely limited by total internal reflection. In this work, we consider diffractive AR coatings that can overcome the limitations of tota ...
... be applied to the reciprocal geometry, where the light couples from a high-index media [such as (O)LEDs or scintillators] into lower-index surroundings, which is severely limited by total internal reflection. In this work, we consider diffractive AR coatings that can overcome the limitations of tota ...
Title Three-dimensional diagnostics of dynamic behaviors of excited
... B. Behavior of Xe(1s , 1s ) Atoms By using the laser absorption technique, we measured the spatiotemporal behavior of the excited Xe atoms in the metastable (1s ) state. Figs. 4 and 5 show the results in a time sequence for the low-voltage and high-voltage operation modes, respectively, correspondin ...
... B. Behavior of Xe(1s , 1s ) Atoms By using the laser absorption technique, we measured the spatiotemporal behavior of the excited Xe atoms in the metastable (1s ) state. Figs. 4 and 5 show the results in a time sequence for the low-voltage and high-voltage operation modes, respectively, correspondin ...