LINEAR AND NONLINEAR LIGHT BULLETS: RECENT
... It is well known that optical solitons in media with a cubic (Kerr-like) selffocusing optical nonlinearity, obeying the nonlinear Schrödinger (NLS) equation, are unstable in two and three dimensions, because of the occurrence of optical beam collapse [8,9]. However, in the past decades, several poss ...
... It is well known that optical solitons in media with a cubic (Kerr-like) selffocusing optical nonlinearity, obeying the nonlinear Schrödinger (NLS) equation, are unstable in two and three dimensions, because of the occurrence of optical beam collapse [8,9]. However, in the past decades, several poss ...
Full text - UvA/FNWI - University of Amsterdam
... speci cally designed wire patterns, the magnetic trapping potential of our chip features a strong harmonic con nement in the radial direction. For this project we aimed to build an experimental setup to enhance this atom-chip experiment with an optical lattice in the axial direction. An experimental ...
... speci cally designed wire patterns, the magnetic trapping potential of our chip features a strong harmonic con nement in the radial direction. For this project we aimed to build an experimental setup to enhance this atom-chip experiment with an optical lattice in the axial direction. An experimental ...
Complex air-structured optical fibre drawn from a 3D
... finding new applications every day in a whole host of areas from science and engineering to medicine and the arts [1]. They are set to revolutionise manufacturing. Fused deposition modelling (FDM) is one of the most commonly used techniques, being the first and simplest demonstration of 3D printing ...
... finding new applications every day in a whole host of areas from science and engineering to medicine and the arts [1]. They are set to revolutionise manufacturing. Fused deposition modelling (FDM) is one of the most commonly used techniques, being the first and simplest demonstration of 3D printing ...
THE VARIATION O F .THE STRESS OPTICAL COEFFICIENT WITH
... has solidified, the internal strains will often cause it to become riddled with cracks and, at times, to explode into tiny fragments. This is why a glass is put into an annealing furnace just after it has solidified. ...
... has solidified, the internal strains will often cause it to become riddled with cracks and, at times, to explode into tiny fragments. This is why a glass is put into an annealing furnace just after it has solidified. ...
Influence of a thin metal layer on a beam propagation in
... into two parts: telecommunication and non−telecommuni− cation. The telecommunication part is a good compound and now many of guided researches are oriented on capac− ity increase, optimization or existing systems’ improve− ment. Development of a non−telecommunication area gives a lot of possibilitie ...
... into two parts: telecommunication and non−telecommuni− cation. The telecommunication part is a good compound and now many of guided researches are oriented on capac− ity increase, optimization or existing systems’ improve− ment. Development of a non−telecommunication area gives a lot of possibilitie ...
Experimental demonstration of near-infrared
... background dielectric constant is ε∞ = 5.0, the plasma frequency is ωp = 1.38 × 1016 rad/s, and the collision frequency γp is equal to γ0 = 5.07 × 1013 rad/s for bulk Ag [33]. For Ag thin films, γp increases due to the electron scattering at the metal boundaries. The permittivity of Ge is obtained f ...
... background dielectric constant is ε∞ = 5.0, the plasma frequency is ωp = 1.38 × 1016 rad/s, and the collision frequency γp is equal to γ0 = 5.07 × 1013 rad/s for bulk Ag [33]. For Ag thin films, γp increases due to the electron scattering at the metal boundaries. The permittivity of Ge is obtained f ...
Self-assembly of three-dimensional photonic-crystals with
... placement of well-defined line or point defects in the interior of the PCs, which cannot be obtained through self-assembly alone. For example, if a line defect is introduced into a photonic crystal, a wavelength (l)-scale optical waveguide can be fabricated, and such a PC waveguide can have unique p ...
... placement of well-defined line or point defects in the interior of the PCs, which cannot be obtained through self-assembly alone. For example, if a line defect is introduced into a photonic crystal, a wavelength (l)-scale optical waveguide can be fabricated, and such a PC waveguide can have unique p ...
P approximation for reflectance imaging with an oblique beam of arbitrary profile 1
... stochastic processes of absorption and scattering. These processes are characterized by the probability distribution functions based on the RT theory and therefore the obtained results provide equivalent solutions. The MC method has been used extensively to solve tissue optics problems with homogene ...
... stochastic processes of absorption and scattering. These processes are characterized by the probability distribution functions based on the RT theory and therefore the obtained results provide equivalent solutions. The MC method has been used extensively to solve tissue optics problems with homogene ...
Optical switches
... • small delay spread • 1% index difference between core and cladding amounts to 1-5 ns/km delay spread • easy to splice and to couple light into it • bit rate limited up to 100 Mbit/s for lengths up to 40 km • fiber span without amplification is limited • Single mode fiber • almost eliminates delay ...
... • small delay spread • 1% index difference between core and cladding amounts to 1-5 ns/km delay spread • easy to splice and to couple light into it • bit rate limited up to 100 Mbit/s for lengths up to 40 km • fiber span without amplification is limited • Single mode fiber • almost eliminates delay ...
Paraxial Optics
... described. A great variety of textbooks in optics include specific chapters to the paraxial approximation of the geometrical optics.[1–11] Other textbooks focused in geometrical optics propose that the paraxial treatment should be included as part of the first approach to the subject.[12–16] The par ...
... described. A great variety of textbooks in optics include specific chapters to the paraxial approximation of the geometrical optics.[1–11] Other textbooks focused in geometrical optics propose that the paraxial treatment should be included as part of the first approach to the subject.[12–16] The par ...
Deciphering Spinoza`s Letters Line by Line
... the aperature of the telescope, in comparison with its distance, can be considered as no more than a point. Moreover, it is certain that, in order to see an entire object, we need not only rays coming from a single point but also all the other rays that come from all the other points. And therefore ...
... the aperature of the telescope, in comparison with its distance, can be considered as no more than a point. Moreover, it is certain that, in order to see an entire object, we need not only rays coming from a single point but also all the other rays that come from all the other points. And therefore ...
Three-dimensional cavity Doppler cooling and cavity sideband cooling.
... field, scattering events that reduce the atom’s kinetic energy are enhanced over those that increase it. Consequently, energy and entropy are transferred from the atom to the scattered-light field, and the atom is cooled in the process. For free particles this mechanism results in a dissipative Dopp ...
... field, scattering events that reduce the atom’s kinetic energy are enhanced over those that increase it. Consequently, energy and entropy are transferred from the atom to the scattered-light field, and the atom is cooled in the process. For free particles this mechanism results in a dissipative Dopp ...
Microscope Basics
... compound microscopes have three or four (occasionally five) objectives usually of 4x, 10x, 40x, and 100x (oil immersion) which revolve on a nosepiece (turret) to give different magnifying powers. The 4x, 10x, and 40x are called “dry” objectives which means they operate with air between the objective ...
... compound microscopes have three or four (occasionally five) objectives usually of 4x, 10x, 40x, and 100x (oil immersion) which revolve on a nosepiece (turret) to give different magnifying powers. The 4x, 10x, and 40x are called “dry” objectives which means they operate with air between the objective ...
Atmospheric optics
Atmospheric optics deals with how the unique optical properties of the Earth's atmosphere cause a wide range of spectacular optical phenomena. The blue color of the sky is a direct result of Rayleigh scattering which redirects higher frequency (blue) sunlight back into the field of view of the observer. Because blue light is scattered more easily than red light, the sun takes on a reddish hue when it is observed through a thick atmosphere, as during a sunrise or sunset. Additional particulate matter in the sky can scatter different colors at different angles creating colorful glowing skies at dusk and dawn. Scattering off of ice crystals and other particles in the atmosphere are responsible for halos, afterglows, coronas, rays of sunlight, and sun dogs. The variation in these kinds of phenomena is due to different particle sizes and geometries.Mirages are optical phenomena in which light rays are bent due to thermal variations in the refraction index of air, producing displaced or heavily distorted images of distant objects. Other optical phenomena associated with this include the Novaya Zemlya effect where the sun appears to rise earlier or set later than predicted with a distorted shape. A spectacular form of refraction occurs with a temperature inversion called the Fata Morgana where objects on the horizon or even beyond the horizon, such as islands, cliffs, ships or icebergs, appear elongated and elevated, like ""fairy tale castles"".Rainbows are the result of a combination of internal reflection and dispersive refraction of light in raindrops. Because rainbows are seen on the opposite side of the sky as the sun, rainbows are more prominent the closer the sun is to the horizon due to their greater distance apart.