On the recombination in high-order harmonic generation in molecules
... In this paper we establish a connection between photoionization/recombination (weak field processes) and high-order harmonic generation (a non-linear phenomenon in strong-field physics). The latter process is one of the most studied aspects of intense-laser physics because it serves as a source of c ...
... In this paper we establish a connection between photoionization/recombination (weak field processes) and high-order harmonic generation (a non-linear phenomenon in strong-field physics). The latter process is one of the most studied aspects of intense-laser physics because it serves as a source of c ...
Coherent whistler emissions in the magnetosphere
... the magnetopause, that had characteristics almost identical to those of magnetosheath lion roars. In this paper we will focus on the observations of narrow-band emissions made by Cluster in the duskside magnetosphere. We will also discuss a possible origin of the coherent structure of lion roars. Th ...
... the magnetopause, that had characteristics almost identical to those of magnetosheath lion roars. In this paper we will focus on the observations of narrow-band emissions made by Cluster in the duskside magnetosphere. We will also discuss a possible origin of the coherent structure of lion roars. Th ...
Optical properties of metal-dielectric-metal
... dielectric greatly increases as the metal loss is decreased for frequencies far below the plasma frequency [1]. Then the metal structuring comes to the rescue. For instance, spoof surface plasmons in a structured metallic membrane have been recently proposed [7] and demonstrated in the THz region [ ...
... dielectric greatly increases as the metal loss is decreased for frequencies far below the plasma frequency [1]. Then the metal structuring comes to the rescue. For instance, spoof surface plasmons in a structured metallic membrane have been recently proposed [7] and demonstrated in the THz region [ ...
EMAT_Analytical+FDTD _revisedv2
... Figure 3. The magnitude distribution of the vector potential A under a circular coil. 2.1.2 Analytical method for meander coil In this work, the coil used in EMAT is a meander coil, so the analytical solutions to a straight wire are needed. Based on the analytical solutions proposed by Dodd and Deed ...
... Figure 3. The magnitude distribution of the vector potential A under a circular coil. 2.1.2 Analytical method for meander coil In this work, the coil used in EMAT is a meander coil, so the analytical solutions to a straight wire are needed. Based on the analytical solutions proposed by Dodd and Deed ...
Basic Interferometry and Optical Testing Two
... Thus, the moiré of two straight-line gratings correctly predicts the centers of the interference fringes produced by interfering two plane waves. Since the gratings used to produce the moiré pattern are binary gratings, the moiré does not correctly predict the sinusoidal intensity profile of the int ...
... Thus, the moiré of two straight-line gratings correctly predicts the centers of the interference fringes produced by interfering two plane waves. Since the gratings used to produce the moiré pattern are binary gratings, the moiré does not correctly predict the sinusoidal intensity profile of the int ...
3 PROGRAMMABLE APODIZERS AND FRESNEL LENSES pupils
... the axis (increase of the depth of focus, multifoci) [She88,Yzu90]. Analytical expressions for the distributions of amplitude and intensity on the point spread function (PSF) are obtained only for some residual aberrations and some mathematical functions for the filter. For the general case, an accu ...
... the axis (increase of the depth of focus, multifoci) [She88,Yzu90]. Analytical expressions for the distributions of amplitude and intensity on the point spread function (PSF) are obtained only for some residual aberrations and some mathematical functions for the filter. For the general case, an accu ...
ENGINEERING OPTICS WITH
... This book serves two purposes: The first is to introduce the readers to some traditional topics such as the matrix formalism of geometrical optics, wave propagation and diffraction, and some fundamental background on Fourier optics. The second is to introduce the essentials of acousto-optics and ele ...
... This book serves two purposes: The first is to introduce the readers to some traditional topics such as the matrix formalism of geometrical optics, wave propagation and diffraction, and some fundamental background on Fourier optics. The second is to introduce the essentials of acousto-optics and ele ...
Gravitational and Anti-gravitational Applications
... Figure 6 - A Small Piece of a Cubic Crystal The Flow from each of the cubic crystal’s atoms is radially outward. Therefore its concentration falls off as the square of distance from the atom. The amount of slowing of an incoming gravitational Flow, and therefore the amount of its resulting deflectio ...
... Figure 6 - A Small Piece of a Cubic Crystal The Flow from each of the cubic crystal’s atoms is radially outward. Therefore its concentration falls off as the square of distance from the atom. The amount of slowing of an incoming gravitational Flow, and therefore the amount of its resulting deflectio ...
Giant pulsations as modes of a transverse Alfv´enic resonator
... points. This suggestion caused some controversy (Glassmeier, 2000; Mann and Chisham, 2000), so this point has not been finally established. Another possible source of energy is an instability associated with an inward ion density gradient, which can occur in the ring current region. That suggestion ...
... points. This suggestion caused some controversy (Glassmeier, 2000; Mann and Chisham, 2000), so this point has not been finally established. Another possible source of energy is an instability associated with an inward ion density gradient, which can occur in the ring current region. That suggestion ...
Physics Syllabus For Grade 12
... Focus on the key point that for SHM to occur, the net force on an object has to be proportional and opposite in sign to its displacement. Again, use the example of a mass attached to a spring on a friction-free surface, like an air hockey table. Encourage students to be exposed (subjected) to three ...
... Focus on the key point that for SHM to occur, the net force on an object has to be proportional and opposite in sign to its displacement. Again, use the example of a mass attached to a spring on a friction-free surface, like an air hockey table. Encourage students to be exposed (subjected) to three ...
Chapter 13
... 4. Young’s two slit experiment produced a pattern of light with varying intensity after light passed through two small slits. This pattern is similar to two-source interference patterns in water waves, as seen in section 8.3. Therefore, Young’s experiment presented strong evidence for the wave model ...
... 4. Young’s two slit experiment produced a pattern of light with varying intensity after light passed through two small slits. This pattern is similar to two-source interference patterns in water waves, as seen in section 8.3. Therefore, Young’s experiment presented strong evidence for the wave model ...
Holographic Optical Beam-Steering (HOBS)
... (lasercom). Lasercom is superior to other methods of wireless communication with respect to data transfer rates and transmission security because it is very difficult to jam the beam or intercept data [Cadogan and Mulholland 1996; Henniger and Wilfert 2010][Ghuman and Willebrand 2002, pg. 2,5][Majum ...
... (lasercom). Lasercom is superior to other methods of wireless communication with respect to data transfer rates and transmission security because it is very difficult to jam the beam or intercept data [Cadogan and Mulholland 1996; Henniger and Wilfert 2010][Ghuman and Willebrand 2002, pg. 2,5][Majum ...
Scanning Transmission Electron Microscopy
... This makes it possible to get rid of the HRTEM imaging aberrations and to reconstruct the phase and amplitude of the exit‐plane wave: but limited chemical sensitivity remains. ...
... This makes it possible to get rid of the HRTEM imaging aberrations and to reconstruct the phase and amplitude of the exit‐plane wave: but limited chemical sensitivity remains. ...
Diffraction
Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit. In classical physics, the diffraction phenomenon is described as the interference of waves according to the Huygens–Fresnel principle. These characteristic behaviors are exhibited when a wave encounters an obstacle or a slit that is comparable in size to its wavelength. Similar effects occur when a light wave travels through a medium with a varying refractive index, or when a sound wave travels through a medium with varying acoustic impedance. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as visible light, X-rays and radio waves.Since physical objects have wave-like properties (at the atomic level), diffraction also occurs with matter and can be studied according to the principles of quantum mechanics. Italian scientist Francesco Maria Grimaldi coined the word ""diffraction"" and was the first to record accurate observations of the phenomenon in 1660.While diffraction occurs whenever propagating waves encounter such changes, its effects are generally most pronounced for waves whose wavelength is roughly comparable to the dimensions of the diffracting object or slit. If the obstructing object provides multiple, closely spaced openings, a complex pattern of varying intensity can result. This is due to the addition, or interference, of different parts of a wave that travels to the observer by different paths, where different path lengths result in different phases (see diffraction grating and wave superposition). The formalism of diffraction can also describe the way in which waves of finite extent propagate in free space. For example, the expanding profile of a laser beam, the beam shape of a radar antenna and the field of view of an ultrasonic transducer can all be analyzed using diffraction equations.