Student Text, pp. 444-452
... Partial Reflection–Partial Refraction Figure 9 At higher angles of incidence, there is reflection as well as refraction. You can see such partial reflection– partial refraction on the right. total internal reflection the reflection of light in an optically denser medium; it occurs when the angle of ...
... Partial Reflection–Partial Refraction Figure 9 At higher angles of incidence, there is reflection as well as refraction. You can see such partial reflection– partial refraction on the right. total internal reflection the reflection of light in an optically denser medium; it occurs when the angle of ...
Flat optics with designer metasurfaces
... Secondary waves created by diffractive optical components such as holograms propagate in air and interfere in the far-field to form complex patterns. The propagation effect is also used in transformation optics1,2, which utilizes optical materials structured on a subwavelength scale (metamaterials3, ...
... Secondary waves created by diffractive optical components such as holograms propagate in air and interfere in the far-field to form complex patterns. The propagation effect is also used in transformation optics1,2, which utilizes optical materials structured on a subwavelength scale (metamaterials3, ...
Second Harmonic Generation Technique and its Applications
... also observed in centrosymmetric materials, such as phthalocyanines [19] and fullerene C60 thin films [20–25] as due to the quadrupolar, magnetic dipolar or combination of both contributions. There exists a large class of phase matchable organic and inorganic single crystals, with large second order ...
... also observed in centrosymmetric materials, such as phthalocyanines [19] and fullerene C60 thin films [20–25] as due to the quadrupolar, magnetic dipolar or combination of both contributions. There exists a large class of phase matchable organic and inorganic single crystals, with large second order ...
Optical metamaterials at near and mid-IR range fabricated by nanoimprint lithography
... ing of sub-optical wavelength features, researchers have been able to implement artificial magnetic metamaterials from terahertz to telecommunication frequencies [9–12], and even in the visible range [13–17]. In this paper, we present theoretical and experimental results of two types of meta-structu ...
... ing of sub-optical wavelength features, researchers have been able to implement artificial magnetic metamaterials from terahertz to telecommunication frequencies [9–12], and even in the visible range [13–17]. In this paper, we present theoretical and experimental results of two types of meta-structu ...
Optical metamaterials at near and mid-IR range fabricated by nanoimprint lithography
... ing of sub-optical wavelength features, researchers have been able to implement artificial magnetic metamaterials from terahertz to telecommunication frequencies [9–12], and even in the visible range [13–17]. In this paper, we present theoretical and experimental results of two types of meta-structu ...
... ing of sub-optical wavelength features, researchers have been able to implement artificial magnetic metamaterials from terahertz to telecommunication frequencies [9–12], and even in the visible range [13–17]. In this paper, we present theoretical and experimental results of two types of meta-structu ...
Mimicking the colourful wing scale structure of the
... Figure 3 | An artificial optical mimic. a, b, SEM images of concavities which are covered by a conformal multilayer stack of 11 alternating layers of titania and alumina: a top view, 2 µm, b cross-section, 1 µm. c, At perpendicular light incidence the artificial replica appears green, while it, d, r ...
... Figure 3 | An artificial optical mimic. a, b, SEM images of concavities which are covered by a conformal multilayer stack of 11 alternating layers of titania and alumina: a top view, 2 µm, b cross-section, 1 µm. c, At perpendicular light incidence the artificial replica appears green, while it, d, r ...
Simplified description of optical forces acting on a nanoparticle in
... from electrostatic interaction of a particle (dielectric) with an inhomogeneous electric field, and the scattering force results from the scattering of the incident beam by the object.21,23 For particles larger than /20, a more complex concept involving the Maxwell stress tensor of the electromagne ...
... from electrostatic interaction of a particle (dielectric) with an inhomogeneous electric field, and the scattering force results from the scattering of the incident beam by the object.21,23 For particles larger than /20, a more complex concept involving the Maxwell stress tensor of the electromagne ...
Document
... from positive to negative values. Match both Z and n of free space with LHMs, i.e. Z=+1, while n=-1! LH materials can reconstitute evanescent wave components in space (passively, without active components). Thus, the superposition of reconstituted evanescent components can result in refocusing of ...
... from positive to negative values. Match both Z and n of free space with LHMs, i.e. Z=+1, while n=-1! LH materials can reconstitute evanescent wave components in space (passively, without active components). Thus, the superposition of reconstituted evanescent components can result in refocusing of ...
Paper Report on “Optical Computing: Need and Challenge”
... The reviewed paper talks about the need for optical computing, its advantages over current computational systems, how an optical switching circuit functions, and the challenges faced by optical computing in the current generation and how long before the advent of a prototype optical computer. The fi ...
... The reviewed paper talks about the need for optical computing, its advantages over current computational systems, how an optical switching circuit functions, and the challenges faced by optical computing in the current generation and how long before the advent of a prototype optical computer. The fi ...
Interferometer design for writing Bragg gratings in optical fibers
... removed and replaced for every exposure. The design accommodates both eventualities, and in either case, an additional clamping mechanism may be included for both the target and the target holder, using e.g. magnets, springs or other compliant mechanism. The top and rear of the target are left unobs ...
... removed and replaced for every exposure. The design accommodates both eventualities, and in either case, an additional clamping mechanism may be included for both the target and the target holder, using e.g. magnets, springs or other compliant mechanism. The top and rear of the target are left unobs ...
Proposed isotropic negative index in three-dimensional optical metamaterials Boubacar Kante, Kevin O’Brien,
... negative index materials at optical frequencies, the fishnet has attracted a considerable amount of attention, and possible low loss operation in this structure is being addressed using optical gain.10 However, even a loss-free optical fishnet will not make a superlens because its index is unambiguo ...
... negative index materials at optical frequencies, the fishnet has attracted a considerable amount of attention, and possible low loss operation in this structure is being addressed using optical gain.10 However, even a loss-free optical fishnet will not make a superlens because its index is unambiguo ...
Photoelectron imaging of modal interference in
... much lower than in the resonant grooves and the photoemission process is highly nonlinear. The PEEM image for the ring array illuminated with TM polarized laser light shows the same streaks as Fig. 3(e), but less pronounced. In contrast to TE polarized excitation the flat surface in between the str ...
... much lower than in the resonant grooves and the photoemission process is highly nonlinear. The PEEM image for the ring array illuminated with TM polarized laser light shows the same streaks as Fig. 3(e), but less pronounced. In contrast to TE polarized excitation the flat surface in between the str ...
1
... cooling of KD2PO4 (DKDP) single crystal through the Curie point T c =222 K (i.e. exactly the same presupposition that is considered in [1], when explaining benefits of the spontaneous polarization for deuteron acceleration). In these articles, the neutron emission has been detected during DKDP cryst ...
... cooling of KD2PO4 (DKDP) single crystal through the Curie point T c =222 K (i.e. exactly the same presupposition that is considered in [1], when explaining benefits of the spontaneous polarization for deuteron acceleration). In these articles, the neutron emission has been detected during DKDP cryst ...
Analysis of Fundamental and Higher Order
... Solitons have been discovered in many branches of Physics. In the context of optical fibers, solitons are not only of fundamental interest but also have practical applications in the field of fiber-optic communications. James Scott Russel was the first scientist who observed a soliton wave in 1834 w ...
... Solitons have been discovered in many branches of Physics. In the context of optical fibers, solitons are not only of fundamental interest but also have practical applications in the field of fiber-optic communications. James Scott Russel was the first scientist who observed a soliton wave in 1834 w ...
Experimental Competition
... Use only the front side of the paper. Begin each part of the problem on a separate sheet. For each question, in addition to the blank sheets where you may write, there is an answer form where you must summarize the results you have obtained. Numerical results should be written with as many digits as ...
... Use only the front side of the paper. Begin each part of the problem on a separate sheet. For each question, in addition to the blank sheets where you may write, there is an answer form where you must summarize the results you have obtained. Numerical results should be written with as many digits as ...
Mie theory for light scattering by a spherical
... A computer program has been developed based on the theory presented in Sections 2– 4. A suggestion of Bohren and Huffman5 has been followed to obtain a numerically stable scheme for calculating an, bn, cn, and dn. For the case of a nonabsorbing medium the results from the new program are the same as ...
... A computer program has been developed based on the theory presented in Sections 2– 4. A suggestion of Bohren and Huffman5 has been followed to obtain a numerically stable scheme for calculating an, bn, cn, and dn. For the case of a nonabsorbing medium the results from the new program are the same as ...
Birefringence
Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. These optically anisotropic materials are said to be birefringent (or birefractive). The birefringence is often quantified as the maximum difference between refractive indices exhibited by the material. Crystals with asymmetric crystal structures are often birefringent, as are plastics under mechanical stress.Birefringence is responsible for the phenomenon of double refraction whereby a ray of light, when incident upon a birefringent material, is split by polarization into two rays taking slightly different paths. This effect was first described by the Danish scientist Rasmus Bartholin in 1669, who observed it in calcite, a crystal having one of the strongest birefringences. However it was not until the 19th century that Augustin-Jean Fresnel described the phenomenon in terms of polarization, understanding light as a wave with field components in transverse polarizations (perpendicular to the direction of the wave vector).