Low-grazing angles scattering of electromagnetic waves from one
... at low-grazing incidence, as most part of the incident power is scattered around the specular direction. Therefore, one can understand that designing an accurate model for this quantity is challenging. The domain of validity of the most classical approximate models [2] has already been studied and m ...
... at low-grazing incidence, as most part of the incident power is scattered around the specular direction. Therefore, one can understand that designing an accurate model for this quantity is challenging. The domain of validity of the most classical approximate models [2] has already been studied and m ...
Specifying an Aspheric Surface
... If the asphere is not rotationally symmetric, as described above, it is given in another form such as a biconic surface with two basic curvatures and two conic constants in two orthogonal directions or an anamorphic asphere, which has additional higher-order terms in two orthogonal directions. Also ...
... If the asphere is not rotationally symmetric, as described above, it is given in another form such as a biconic surface with two basic curvatures and two conic constants in two orthogonal directions or an anamorphic asphere, which has additional higher-order terms in two orthogonal directions. Also ...
Imaging transport: optical measurements of
... Knowledge of transport parameters is important to the development of new optoelectronic materials and devices, such as ultraviolet (UV) semiconductor lasers and advanced solar cells. A series of experiments was performed to measure fundamental transport parameters in luminescent semiconductor materi ...
... Knowledge of transport parameters is important to the development of new optoelectronic materials and devices, such as ultraviolet (UV) semiconductor lasers and advanced solar cells. A series of experiments was performed to measure fundamental transport parameters in luminescent semiconductor materi ...
THE THEORY OF ELECTROMAGNETIC WAVES IN A CRYSTAL IN
... Consequently P(r) = 0 on this surface, too. Then Eq. ( 9) shows that Pt (r) = 0 on the surfaces of the crystal. Thus the surfaces of the crystal turn out to be nodal surfaces for exciton waves as well as for the specific dipole moment. As is well known, in a bounded crystal conduction electrons can ...
... Consequently P(r) = 0 on this surface, too. Then Eq. ( 9) shows that Pt (r) = 0 on the surfaces of the crystal. Thus the surfaces of the crystal turn out to be nodal surfaces for exciton waves as well as for the specific dipole moment. As is well known, in a bounded crystal conduction electrons can ...
Major Concepts of Physics PHY102 – Lecture #5
... a particle model of light. He examined the border of the image. Observed: Colored fringes. Grimaldi’s work was the first experimental evidence that light is a wave. Major Concepts of Physics PHY102 – Lecture #5 ...
... a particle model of light. He examined the border of the image. Observed: Colored fringes. Grimaldi’s work was the first experimental evidence that light is a wave. Major Concepts of Physics PHY102 – Lecture #5 ...
Sulfur and iron surface states on fractured pyrite surfaces
... Pyrite has a poor {001} cleavage. Unlike most other minerals with a rocksalt-type structure, pyrite typically fractures conchoidally, demonstrating that parting surfaces are not constrained to the {001} crystallographic plane. Cleavage along {001} require rupture of only Fe-S bonds, but pyrite consi ...
... Pyrite has a poor {001} cleavage. Unlike most other minerals with a rocksalt-type structure, pyrite typically fractures conchoidally, demonstrating that parting surfaces are not constrained to the {001} crystallographic plane. Cleavage along {001} require rupture of only Fe-S bonds, but pyrite consi ...
الشريحة 1
... just a question of usage, and there is no specific, important physical difference between them." He suggested that when there are only a few sources, say two, we call it interference, as in Young's slits, but with a large number of sources, the process is labelled diffraction. While diffraction occu ...
... just a question of usage, and there is no specific, important physical difference between them." He suggested that when there are only a few sources, say two, we call it interference, as in Young's slits, but with a large number of sources, the process is labelled diffraction. While diffraction occu ...
Guerra F., Leone M., Robotti N. The discovery of X
... In the fall of 1909 Max von Laue, former assistant to Max Planck in Berlin, went as Privatdozent to Munich at Sommerfeld’s Institute of Theoretical Physics. As he later wrote, “it turned out to be a matter of great good fortune that Sommerfeld passed to me the article ‘Wellenoptik’ (Wave optics) at ...
... In the fall of 1909 Max von Laue, former assistant to Max Planck in Berlin, went as Privatdozent to Munich at Sommerfeld’s Institute of Theoretical Physics. As he later wrote, “it turned out to be a matter of great good fortune that Sommerfeld passed to me the article ‘Wellenoptik’ (Wave optics) at ...
Shape Reconstruction from Multiple Images of the Ocean Surface
... light gradient are then inferred from the observed image grey levels, and temporal resolution is achieved by analyzing an image sequence. The advantage of these liglil gradient methods are that the data analysis is simple (and can be performed in real time) and the techniques can be readily extended ...
... light gradient are then inferred from the observed image grey levels, and temporal resolution is achieved by analyzing an image sequence. The advantage of these liglil gradient methods are that the data analysis is simple (and can be performed in real time) and the techniques can be readily extended ...
Optical Properties of Plasmonic Ag/Ni Square Nanostructures
... known in the worlds of Harry Potter and science fiction novels, have during the last century been envisioned by scientists all around the globe [1]. When light strikes an interface between a metal and a dielectric, the electric field of the light will start to oscillate the free electrons around the ...
... known in the worlds of Harry Potter and science fiction novels, have during the last century been envisioned by scientists all around the globe [1]. When light strikes an interface between a metal and a dielectric, the electric field of the light will start to oscillate the free electrons around the ...
Measurement considerations when specifying
... position from reference to sample measurement is small when measured in reflection and large in transmission for the reason outlined in point 1. As the position of the beam changes between baseline and sample measurements, the accuracy of the measurement suffers. Beam-path changes become more signif ...
... position from reference to sample measurement is small when measured in reflection and large in transmission for the reason outlined in point 1. As the position of the beam changes between baseline and sample measurements, the accuracy of the measurement suffers. Beam-path changes become more signif ...
Large-angle quasi-self-collimation effect in a rod
... where β=k0 ∙ (darl-r-rarl) is the phase shift of the light beam as it crosses the ARL (k0 denotes the wave vector in the air), r12 is the reflection coefficient of the ARL in the air and r23 is the reflection coefficient of the semi-infinite quasi-SC PC when the light beam is hitting the PC surface ...
... where β=k0 ∙ (darl-r-rarl) is the phase shift of the light beam as it crosses the ARL (k0 denotes the wave vector in the air), r12 is the reflection coefficient of the ARL in the air and r23 is the reflection coefficient of the semi-infinite quasi-SC PC when the light beam is hitting the PC surface ...
Study of graphite electrode surface with In and Pt deposits E.M.
... It has recently been established [1,2] that it was impossible to fix the platinum ion reduction (II, IV) on the graphite electrode (GE) and the electrochemical oxidation of platinum on the current-voltage curves. This is due to the fact that catalytic hydrogen release always occurs with the platinum ...
... It has recently been established [1,2] that it was impossible to fix the platinum ion reduction (II, IV) on the graphite electrode (GE) and the electrochemical oxidation of platinum on the current-voltage curves. This is due to the fact that catalytic hydrogen release always occurs with the platinum ...
Combining Photonic Crystal and Optical Monte
... (see Fig. 3b). The incident angle θSample on the sample/air interface and the elevation angle θL of the laser beam are correlated by Snell’s law via θSample = asin[sin(θL ) · nHS /nBF ]. This allows sweeping θSample from 0◦ to 90◦ using a range for θL of 0◦ to 54.4◦ . A custom-written program contro ...
... (see Fig. 3b). The incident angle θSample on the sample/air interface and the elevation angle θL of the laser beam are correlated by Snell’s law via θSample = asin[sin(θL ) · nHS /nBF ]. This allows sweeping θSample from 0◦ to 90◦ using a range for θL of 0◦ to 54.4◦ . A custom-written program contro ...
Construction and Validation of a White Light Interferometer
... Figure 25 The dust spots on the beam splitter ................................................................ 33 Figure 26 The possible design of the interferometer to scan a cylindrical surface......... 34 ...
... Figure 25 The dust spots on the beam splitter ................................................................ 33 Figure 26 The possible design of the interferometer to scan a cylindrical surface......... 34 ...
Electrical Excitation of Surface Plasmons
... intensity null along the optical axis, which follows from symmetry considerations. In Fig. 3 we show both the experimental image [3(a)] and the theoretical image [3(b)] along with cross sections through the center of the patterns. In both images we indeed find an intensity minimum at the center encl ...
... intensity null along the optical axis, which follows from symmetry considerations. In Fig. 3 we show both the experimental image [3(a)] and the theoretical image [3(b)] along with cross sections through the center of the patterns. In both images we indeed find an intensity minimum at the center encl ...
the Quantifying Scatter PDF
... Of course all scatter measurements are integrations over a detector collection aperture, but the TIS designation is reserved for situations where the attempt is to gather as much scattered light as possible, while “angle resolved” designs are created to gain information from the distribution of the ...
... Of course all scatter measurements are integrations over a detector collection aperture, but the TIS designation is reserved for situations where the attempt is to gather as much scattered light as possible, while “angle resolved” designs are created to gain information from the distribution of the ...
Phononic Crystal Waveguiding in GaAs Golnaz Azodi Aval
... The physical phenomenon on which the SAW devices is based is piezoelectricity. In other words, certain materials produce an electric field when mechanically strained due to the electromechanical coupling property of the material. The most common piezoelectric substrates are lithium niobate, lithium ...
... The physical phenomenon on which the SAW devices is based is piezoelectricity. In other words, certain materials produce an electric field when mechanically strained due to the electromechanical coupling property of the material. The most common piezoelectric substrates are lithium niobate, lithium ...
Assessing the Contributions of Surface Waves and Complex Rays to
... The remainder of this paper is organized as follows. In Section 2 we review the contribution of geometrical light rays to the scattered intensity. In Section 3 we review the Airy theory of the p - 1-order rainbow and compare its accuracy with that of the p term of the Debye-series expansion of the s ...
... The remainder of this paper is organized as follows. In Section 2 we review the contribution of geometrical light rays to the scattered intensity. In Section 3 we review the Airy theory of the p - 1-order rainbow and compare its accuracy with that of the p term of the Debye-series expansion of the s ...
Reflection high-energy electron diffraction
Reflection high-energy electron diffraction (RHEED) is a technique used to characterize the surface of crystalline materials. RHEED systems gather information only from the surface layer of the sample, which distinguishes RHEED from other materials characterization methods that also rely on diffraction of high-energy electrons. Transmission electron microscopy, another common electron diffraction method samples the bulk of the sample due to the geometry of the system. Low-energy electron diffraction (LEED) is also surface sensitive, but LEED achieves surface sensitivity through the use of low energy electrons.