xii physics board paper 2015 solution
... 16) Name the parts of the electromagnetic spectrum which is a) suitable for radar systems used in aircraft navigation, b) used to treat muscular strain. c) used as a diagnostic tool in medicine. Write in brief, how these waves can be produced. SOL: a) Microwave, source : Oscillating currents in spe ...
... 16) Name the parts of the electromagnetic spectrum which is a) suitable for radar systems used in aircraft navigation, b) used to treat muscular strain. c) used as a diagnostic tool in medicine. Write in brief, how these waves can be produced. SOL: a) Microwave, source : Oscillating currents in spe ...
JMG_Paper2_GainingSuperpowersThroughMetamaterials
... permeability was actually the catalyst for the modern explosion in metamaterial development. In 1968, a Russian physicist named Victor Veselago had written a paper titled “The electrodynamics of substances with simultaneously negative E [permittivity] & mu [permeability]” (Smith). In the intervening ...
... permeability was actually the catalyst for the modern explosion in metamaterial development. In 1968, a Russian physicist named Victor Veselago had written a paper titled “The electrodynamics of substances with simultaneously negative E [permittivity] & mu [permeability]” (Smith). In the intervening ...
2.0 QUALIFICATION OF OPTICAL MATERIAL
... when brought together enclose a thin film of the liquid being measured. When a solid is being measured the water jacket is left open and the solid is placed on the measuring prism with a contact liquid of high refractive index placed between (see Fig. 2-6). ...
... when brought together enclose a thin film of the liquid being measured. When a solid is being measured the water jacket is left open and the solid is placed on the measuring prism with a contact liquid of high refractive index placed between (see Fig. 2-6). ...
Relation between nonlinear refractive index and
... the amount of doping (i.e., by modifying its absorption). Obviously, the interplay between n 2 , k 2 , n 0 , k 0 , and ( 3 ) is much clearer in the case of strongly absorbing systems (k 0 /n 0 ⬎ 10⫺2 ) such as metals, or systems with resonant nonlinearities. In the case of pure metals, although th ...
... the amount of doping (i.e., by modifying its absorption). Obviously, the interplay between n 2 , k 2 , n 0 , k 0 , and ( 3 ) is much clearer in the case of strongly absorbing systems (k 0 /n 0 ⬎ 10⫺2 ) such as metals, or systems with resonant nonlinearities. In the case of pure metals, although th ...
Optical fibers are not affected by interference
... When a fiber wave-guide can support only the HE11 mode, it is referred to as a single mode wave-guide. In a step index structure this occurs w3hen the wave-guide is operating at v<2.4 where v is dimensionless number which relates the propagating in the cladding. These single mode fibers have small s ...
... When a fiber wave-guide can support only the HE11 mode, it is referred to as a single mode wave-guide. In a step index structure this occurs w3hen the wave-guide is operating at v<2.4 where v is dimensionless number which relates the propagating in the cladding. These single mode fibers have small s ...
Cloaking at Optical Frequencies - Cornell ECE
... distributed Bragg reflector (DBR). The distribution of posts induces a variation of the effective index of refraction across the surface through the relation εeff = ρSiO2εSiO2 + ρSiεSi, where ρ is the volumetric fraction and ε is the effective dielectric constant of each material26. The DBR consists ...
... distributed Bragg reflector (DBR). The distribution of posts induces a variation of the effective index of refraction across the surface through the relation εeff = ρSiO2εSiO2 + ρSiεSi, where ρ is the volumetric fraction and ε is the effective dielectric constant of each material26. The DBR consists ...
Chapter 22: Reflection and Refraction of Light
... This shows an example of retroreflection. Retroreflection is reflection that travels back along its original direction. o So what you are seeing is the light reflecting off the blood vessels in the retina of your eye and returning back out the lens of the eye. Refraction All electromagnetic wa ...
... This shows an example of retroreflection. Retroreflection is reflection that travels back along its original direction. o So what you are seeing is the light reflecting off the blood vessels in the retina of your eye and returning back out the lens of the eye. Refraction All electromagnetic wa ...
Mindfiesta Page 1 CHAPTER – 10 WAVE OPTICS EXPERTS TIPS
... intensity of light scattered is inversely proportional to the fourth power of the wavelength of the light. As a consequence of it: (a) The danger signals are red in colour. It is because, due to its large wavelength, the scattering of red light is only to a small extent. Accordingly, the red light s ...
... intensity of light scattered is inversely proportional to the fourth power of the wavelength of the light. As a consequence of it: (a) The danger signals are red in colour. It is because, due to its large wavelength, the scattering of red light is only to a small extent. Accordingly, the red light s ...
Mie theory for light scattering by a spherical
... two when the size parameter increases. However, from Figs. 2– 4, we can see that Qe approaches one for an absorbing medium. For the case of an air bubble 共Fig. 2兲 we have Qs ⫽ Qe because Qa ⫽ 0. For a sphere with absorption 共Figs. 3 and 4兲 Qs approaches one for nonabsorbing media but zero for absorb ...
... two when the size parameter increases. However, from Figs. 2– 4, we can see that Qe approaches one for an absorbing medium. For the case of an air bubble 共Fig. 2兲 we have Qs ⫽ Qe because Qa ⫽ 0. For a sphere with absorption 共Figs. 3 and 4兲 Qs approaches one for nonabsorbing media but zero for absorb ...
Self-collimation and focusing effects in zero
... singular wavelengths are observed in the reflection diagram, see black curves of Fig. 1. The reflection coefficient of the finite size PC is computed for TM-polarized light with the rigorous electromagnetic code described in [10]. Similar results can be found in the TE polarization case. Metamateria ...
... singular wavelengths are observed in the reflection diagram, see black curves of Fig. 1. The reflection coefficient of the finite size PC is computed for TM-polarized light with the rigorous electromagnetic code described in [10]. Similar results can be found in the TE polarization case. Metamateria ...
The Faraday Effect
... visible range the refractive index of common substances, such as air, water; lead and soda glasses, etc., decreases rapidly with increasing wavelength (increasing frequency separation from the governing ultraviolet absorption resonances; normal dispersion); hence, dn/d is negative and it follows th ...
... visible range the refractive index of common substances, such as air, water; lead and soda glasses, etc., decreases rapidly with increasing wavelength (increasing frequency separation from the governing ultraviolet absorption resonances; normal dispersion); hence, dn/d is negative and it follows th ...
Research Article Influence of Thickness on the Holographic Parameters of H-PDLC Materials
... functionality, LC concentration, NVP concentration, driving voltage, surfactant, fluorination, index matching, and nanoparticle doping [29]. Nevertheless, the effect of the thickness of the sample on grating morphology has not yet been studied in depth. Usually the prepolymer syrup is prepared under ...
... functionality, LC concentration, NVP concentration, driving voltage, surfactant, fluorination, index matching, and nanoparticle doping [29]. Nevertheless, the effect of the thickness of the sample on grating morphology has not yet been studied in depth. Usually the prepolymer syrup is prepared under ...
Optical mode structure of the air waveguide
... and cladding. Since the lowest order leaky mode is nearly Gaussian [Fig. 2(d)] we used a variational equation with Gaussian trial function to derive Eq. (2b). At early times up to ∼500 μs, propagation loss decreases as there is less transverse leakage through a broad and shallow cladding region than ...
... and cladding. Since the lowest order leaky mode is nearly Gaussian [Fig. 2(d)] we used a variational equation with Gaussian trial function to derive Eq. (2b). At early times up to ∼500 μs, propagation loss decreases as there is less transverse leakage through a broad and shallow cladding region than ...
ppt
... The mathematical treatment of multi-layer coatings relies on elaborated matrix methods (see e.g. the text books ‘Thin Film Optical Filters’ by H. A. MacLeod, and ‘Optical Properties of Thin Solid Films’ by O.S. Heavens. Simulation codes like TFG FilmStar (used by us) and SCI Film Wizard allow to pre ...
... The mathematical treatment of multi-layer coatings relies on elaborated matrix methods (see e.g. the text books ‘Thin Film Optical Filters’ by H. A. MacLeod, and ‘Optical Properties of Thin Solid Films’ by O.S. Heavens. Simulation codes like TFG FilmStar (used by us) and SCI Film Wizard allow to pre ...
Chapter 24
... • If the incident radiation contains several wavelengths, each wavelength deviates through a specific angle ...
... • If the incident radiation contains several wavelengths, each wavelength deviates through a specific angle ...
A Reliable Method For Extraction Of Material Parameters In
... ERAHERTZ spectroscopy is a powerful technique for material studies over a wide range of frequency which extends from a few tens of gigahertz to a few terahertz. Using ultrashort electromagnetic pulses, terahertz spectroscopy gives access to the complex refractive index of a wide variety of materials ...
... ERAHERTZ spectroscopy is a powerful technique for material studies over a wide range of frequency which extends from a few tens of gigahertz to a few terahertz. Using ultrashort electromagnetic pulses, terahertz spectroscopy gives access to the complex refractive index of a wide variety of materials ...
NO2422242227
... region surrounded by multiple air holes ,that run along the fiber length are attaching much attention in recent years because of their unique properties which are not realized in convectional optical fibers. PCFs are divided into two different kinds of fibers. The first one, index guiding PCF, guide ...
... region surrounded by multiple air holes ,that run along the fiber length are attaching much attention in recent years because of their unique properties which are not realized in convectional optical fibers. PCFs are divided into two different kinds of fibers. The first one, index guiding PCF, guide ...
Consequences of the WFC3 IR detector 24 degrees tilt
... provided only partially satisfactory information on these parameters and this is the single factor dominating the reliability of this modeling effort. The adopted values of the various parameters are discussed individually below. ...
... provided only partially satisfactory information on these parameters and this is the single factor dominating the reliability of this modeling effort. The adopted values of the various parameters are discussed individually below. ...
Basics of Non-Linear Fiber Optics
... The refractive index profile along the length of the fiber is no more constant now but has a shape same as the pulse power profile. Since the refractive index profile is created by the pulse itself, it slides along with the pulse. The pulse energy has now preference to stay near its peak, as refract ...
... The refractive index profile along the length of the fiber is no more constant now but has a shape same as the pulse power profile. Since the refractive index profile is created by the pulse itself, it slides along with the pulse. The pulse energy has now preference to stay near its peak, as refract ...
Bragg waveguides with low-index liquid cores
... This effect was also demonstrated in the regime of low refractive index contrast by Qu and Skorobogatiy [27] where an application to bulk refractive index sensing was demonstrated: a sensitivity of ≈ 1400 nm/RIU was achieved for aqueous solutions of salt (indices from ≈ 1.33 to 1.38). As discussed ...
... This effect was also demonstrated in the regime of low refractive index contrast by Qu and Skorobogatiy [27] where an application to bulk refractive index sensing was demonstrated: a sensitivity of ≈ 1400 nm/RIU was achieved for aqueous solutions of salt (indices from ≈ 1.33 to 1.38). As discussed ...
Lecture 1/ Chapter 1/ Measurements
... not polarized, it can be separated into two polarized components that are reflected and transmitted in different amounts by the surface of the water for example (Fresnel laws). Figure below shows a ray of unpolarized light incident on a glass surface. We can resolve the electric field vectors of the ...
... not polarized, it can be separated into two polarized components that are reflected and transmitted in different amounts by the surface of the water for example (Fresnel laws). Figure below shows a ray of unpolarized light incident on a glass surface. We can resolve the electric field vectors of the ...
