Coatings, Filters, and Surface Finishes
... Here are some typical examples of the uses of coatings. The goal is physical insight, not detailed coating recipes, so we neglect dispersion, material absorption, adhesion problems, and interface effects, for example, the 10–50 nm of Al2 O3 that grows immediately on top of deposited aluminum, even i ...
... Here are some typical examples of the uses of coatings. The goal is physical insight, not detailed coating recipes, so we neglect dispersion, material absorption, adhesion problems, and interface effects, for example, the 10–50 nm of Al2 O3 that grows immediately on top of deposited aluminum, even i ...
Photonic Crystal Nanocavities for Efficient Light Confinement and
... We have explored the fabrication of multi-cavity structures, and have developed methods for collimating light through the photonic crystal to optically interconnect these resonators. Figure 9 shows a multi-resonator structure, in which the resonators are coupled together through the photonic crystal ...
... We have explored the fabrication of multi-cavity structures, and have developed methods for collimating light through the photonic crystal to optically interconnect these resonators. Figure 9 shows a multi-resonator structure, in which the resonators are coupled together through the photonic crystal ...
Line Degeneracy and Strong Spin-Orbit Coupling of Light with Bulk
... The mechanism of the direction-dependent handedness in the proposed metamaterial can be unveiled by analyzing the electromagnetic responses of the two SRRs. As shown by Fig. 2(b), for a beam propagating along the k0 x direction with TM polarization (the electric field is in the xy plane), the electr ...
... The mechanism of the direction-dependent handedness in the proposed metamaterial can be unveiled by analyzing the electromagnetic responses of the two SRRs. As shown by Fig. 2(b), for a beam propagating along the k0 x direction with TM polarization (the electric field is in the xy plane), the electr ...
Monte Carlo simulation of light scattering in the atmosphere and
... bulence being much less important. A significant source of atmospheric blur is especially aerosol scatter of light at near-forward angles [1, 8]. The multiple scattering of light is affected by the optical thickness of the atmosphere, the aerosol size distribution and the aerosol vertical profile. W ...
... bulence being much less important. A significant source of atmospheric blur is especially aerosol scatter of light at near-forward angles [1, 8]. The multiple scattering of light is affected by the optical thickness of the atmosphere, the aerosol size distribution and the aerosol vertical profile. W ...
Light & Matter: Absorption and Scattering
... • Much more complicated than absorption • Light is hardly observed from the source, but reaches our eyes indirectly through scattering • Inhomogeneity causes scattering; cloud, raindrop, etc. • Elastic (Rayleigh, Mie) or inelastic (Raman, Ramen) ...
... • Much more complicated than absorption • Light is hardly observed from the source, but reaches our eyes indirectly through scattering • Inhomogeneity causes scattering; cloud, raindrop, etc. • Elastic (Rayleigh, Mie) or inelastic (Raman, Ramen) ...
Slowdown of light due to exciton-polariton propagation in ZnO
... transmitted through a 0.55-mm-thick Cermet ZnO sample in the α-measurement geometry (kc, E⊥c). Several important features can be noticed. First of all, the light could only be transmitted when photon energies are below 3.360 eV, which indicates strong near-band-edge absorption at the higher energie ...
... transmitted through a 0.55-mm-thick Cermet ZnO sample in the α-measurement geometry (kc, E⊥c). Several important features can be noticed. First of all, the light could only be transmitted when photon energies are below 3.360 eV, which indicates strong near-band-edge absorption at the higher energie ...
Extraordinary optical transmission by interference of diffracted
... subwavelength apertures and the peak intensity will reduce with increase in slit width due to sharp decrease in amplitude of boundary diffraction wave away from the geometrically illuminated to geometrically shadowed transition boundary. Here we have considered a single diffraction only but, actuall ...
... subwavelength apertures and the peak intensity will reduce with increase in slit width due to sharp decrease in amplitude of boundary diffraction wave away from the geometrically illuminated to geometrically shadowed transition boundary. Here we have considered a single diffraction only but, actuall ...
Light consists of electromagnetic waves that have oscillating electric
... We will denote the propagation direction of a plane wave by the wave vector k. In real optical systems, such (infinitely spread) plane waves do not exist because of the finite size of the optical elements. Non-planar optical components cause further deviations of the wave from planarity so the wave ...
... We will denote the propagation direction of a plane wave by the wave vector k. In real optical systems, such (infinitely spread) plane waves do not exist because of the finite size of the optical elements. Non-planar optical components cause further deviations of the wave from planarity so the wave ...
BioE 123 Teaching Material Stanford University
... you the importance of watching out for spherical aberrations, especially with highcurvature plano-convex lenses! Ray Tracing Rules This is the part you’ve been waiting for! In this section we learn how to follow light rays as they travel through optical systems and thus predict where images will be ...
... you the importance of watching out for spherical aberrations, especially with highcurvature plano-convex lenses! Ray Tracing Rules This is the part you’ve been waiting for! In this section we learn how to follow light rays as they travel through optical systems and thus predict where images will be ...
EE-15 - International Journal of Advance Research and Innovation
... Optical systems work in the infrared or near infrared region of light and the easiest way to visualize how the work is imagine, two points interconnected with fiber optic cable and then remove the cable. The infrared carrier used for transmitting the signal is generated either by a high power LED or ...
... Optical systems work in the infrared or near infrared region of light and the easiest way to visualize how the work is imagine, two points interconnected with fiber optic cable and then remove the cable. The infrared carrier used for transmitting the signal is generated either by a high power LED or ...
Optical Detection of Early Damage in Retinal Ganglion Cells in a
... PURPOSE. Elastic light backscattering spectroscopy (ELBS) has exquisite sensitivity to the ultrastructural properties of tissue and thus has been applied to detect various diseases associated with ultrastructural alterations in their early stages. This study aims to test whether ELBS can detect earl ...
... PURPOSE. Elastic light backscattering spectroscopy (ELBS) has exquisite sensitivity to the ultrastructural properties of tissue and thus has been applied to detect various diseases associated with ultrastructural alterations in their early stages. This study aims to test whether ELBS can detect earl ...
Cost-effective optical coherence tomography spectrometer based on
... using only standard components. To reduce the depth dependent signal loss which is caused by the limited spectral resolution an increase of the numerical aperture is necessary. This is usually associated with enlarged optics. A growth of the device can be counteracted by a more efficient grating wit ...
... using only standard components. To reduce the depth dependent signal loss which is caused by the limited spectral resolution an increase of the numerical aperture is necessary. This is usually associated with enlarged optics. A growth of the device can be counteracted by a more efficient grating wit ...
Energy Flow and Poynting Vector
... all (but is always lower in intensity) or varies between zero and maximum (= incoming) intensity in a cos2 fashion if the incoming beam is 100 % linearly polarized, as shown above. If the beam is partially polarized you have a mix of the two extremes. The second question (2. How can we polarize an u ...
... all (but is always lower in intensity) or varies between zero and maximum (= incoming) intensity in a cos2 fashion if the incoming beam is 100 % linearly polarized, as shown above. If the beam is partially polarized you have a mix of the two extremes. The second question (2. How can we polarize an u ...
Ellipsometry of light scattering from multilayer coatings
... 1% variation, which indicates a polarization ratio of the incident source of less than 1%. In the absence of sample, cross-polarization measurements give an extinction ratio of better than 104, which corresponds to the efficiency of the setup, including the quality of the laser beam, the polarizer, ...
... 1% variation, which indicates a polarization ratio of the incident source of less than 1%. In the absence of sample, cross-polarization measurements give an extinction ratio of better than 104, which corresponds to the efficiency of the setup, including the quality of the laser beam, the polarizer, ...
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.