PT symmetry in optics
... Passive gratings (involving no gain or loss) can act as high efficiency reflectors around the Bragg wavelength. Instead, a PT symmetric object at the PT symmetric breaking point is reflectionless over all frequencies around the Bragg resonance when light is incident from one side of the structure wh ...
... Passive gratings (involving no gain or loss) can act as high efficiency reflectors around the Bragg wavelength. Instead, a PT symmetric object at the PT symmetric breaking point is reflectionless over all frequencies around the Bragg resonance when light is incident from one side of the structure wh ...
Polarization-dependent Goos-Hänchen shift at a graded dielectric
... When a light beam undergoes total internal reflection 100% of its energy is reflected. Because evanescent fields penetrate into the lower-index medium, the reflected beam does not follow the geometrically expected path, but is translated a little, the amount depending on the polarization of the inci ...
... When a light beam undergoes total internal reflection 100% of its energy is reflected. Because evanescent fields penetrate into the lower-index medium, the reflected beam does not follow the geometrically expected path, but is translated a little, the amount depending on the polarization of the inci ...
chapter 7 calcite - Microlab Gallery
... Light can be modeled using a line of points that is normal to the propagation direction of the beat. Each point is used as a source for a wave and a curved line is drawn representing the crest of the wave after traveling one wavelength from each source. A tangent is drawn to these curves that connec ...
... Light can be modeled using a line of points that is normal to the propagation direction of the beat. Each point is used as a source for a wave and a curved line is drawn representing the crest of the wave after traveling one wavelength from each source. A tangent is drawn to these curves that connec ...
... to the wide advances in laser sources and receivers, digital communications, and signal processing. Underwater free space optics (uFSO) fulfills several niche applications for wireless communications in ocean waters. While RF communications have become ubiquitous in our everyday lives above water, t ...
The Hong Kong Polytechnic University
... Interferometer: An instrument designed to exploit the interference of light and the fringe patterns that result from optical path differences. An interferometer divides an initial beam into two or more parts that travel diverse optical paths and then reunite to produce an interference pattern. Accor ...
... Interferometer: An instrument designed to exploit the interference of light and the fringe patterns that result from optical path differences. An interferometer divides an initial beam into two or more parts that travel diverse optical paths and then reunite to produce an interference pattern. Accor ...
Lens Aberrations and Ray Tracing 1 Background
... Where would spherical aberrations be an issue? Many times an experiment will require a wellcollimated beam or focusing as much energy as possible into a point, situations that mandate minimal spherical aberrations. Which lens should be used? Bi-convex or plano convex — and in the latter case, which ...
... Where would spherical aberrations be an issue? Many times an experiment will require a wellcollimated beam or focusing as much energy as possible into a point, situations that mandate minimal spherical aberrations. Which lens should be used? Bi-convex or plano convex — and in the latter case, which ...
prezantacia aj
... one billionth of a meter (0.000000001 meter) in length. Wavelengths that are not visible to the human eye are used to transmit data over optical fiber. These wavelengths are slightly longer than red light and are called infrared light. Infrared light is used in TV remote controls. The wavelength of ...
... one billionth of a meter (0.000000001 meter) in length. Wavelengths that are not visible to the human eye are used to transmit data over optical fiber. These wavelengths are slightly longer than red light and are called infrared light. Infrared light is used in TV remote controls. The wavelength of ...
Optical Elements
... wavelength. Manufacturers offer mostly h = 45 narrow-band mirrors. Monochromatic mirrors are used to suppress background radiation in the systems were only one laser line is used. But their biggest advantage is that highly transparent multilayer stack introduces negligible absorption, which makes m ...
... wavelength. Manufacturers offer mostly h = 45 narrow-band mirrors. Monochromatic mirrors are used to suppress background radiation in the systems were only one laser line is used. But their biggest advantage is that highly transparent multilayer stack introduces negligible absorption, which makes m ...
Optical Storage Overview
... optical storage market, with a host of available library devices to take care of disk management. While Magneto-optical disks are more expensive than DVD or CD media, they do have a higher level of reliability, which is why they are often found in government agencies and financial institutions as we ...
... optical storage market, with a host of available library devices to take care of disk management. While Magneto-optical disks are more expensive than DVD or CD media, they do have a higher level of reliability, which is why they are often found in government agencies and financial institutions as we ...
September 20, 2000 - University of South Florida
... the information below the surface is carried by Lw only. This is different from land applications where Lpath does not contain surface reflection. For example, in their atmospheric-correction work for land Liang et al. (1997) explicitly stated that “L0 is the upward radiance of the atmosphere for ze ...
... the information below the surface is carried by Lw only. This is different from land applications where Lpath does not contain surface reflection. For example, in their atmospheric-correction work for land Liang et al. (1997) explicitly stated that “L0 is the upward radiance of the atmosphere for ze ...
Retroreflector
A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects light back to its source with a minimum of scattering. In a retroreflector an electromagnetic wavefront is reflected back along a vector that is parallel to but opposite in direction from the wave's source. The angle of incidence at which the device or surface reflects light in this way is greater than zero, unlike a planar mirror, which does this only if the mirror is exactly perpendicular to the wave front, having a zero angle of incidence.