In optics, the refractive index (or refraction index) of an optical medium is a dimensionless number that gives the indication of the light bending ability...
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Negative-index metamaterial or negative-index material (NIM) is a metamaterial whose refractive index for an electromagnetic wave has a negative value...
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Refractive index contrast, in an optical waveguide, such as an optical fiber, is a measure of the relative difference in refractive index of the core...
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{n_{2}}{n_{1}}}} Optical prisms and lenses use refraction to redirect light, as does the human eye. The refractive index of materials varies with the wavelength...
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Snell's law (redirect from Angle of refraction)
tracing to compute the angles of incidence or refraction, and in experimental optics to find the refractive index of a material. The law is also satisfied...
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A refractive index profile is the distribution of refractive indices of materials within an optical fiber. Some optical fiber has a step-index profile...
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Gradient-index (GRIN) optics is the branch of optics covering optical effects produced by a gradient of the refractive index of a material. Such gradual...
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well-characterized refractive index, but these indices often depend strongly upon the frequency of light, causing optical dispersion. Standard refractive index measurements...
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Brix (section Refractive index)
in particular its refractive index and the extent to which it rotates the plane of linearly polarized light. The refractive index, nD, for sucrose solutions...
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A high-refractive-index polymer (HRIP) is a polymer that has a refractive index greater than 1.50. Such materials are required for anti-reflective coating...
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A graded-index fiber, or gradient-index fiber, is an optical fiber whose core has a refractive index that decreases continuously with increasing radial...
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Standard refractometers measure the extent of light refraction (as part of a refractive index) of transparent substances in either a liquid this is...
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Birefringence (redirect from Double refraction)
Birefringence is the optical property of a material having a refractive index that depends on the polarization and propagation direction of light. These...
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Atmosphere of Earth (redirect from Refractive index of air)
is refracted in the same direction as the curvature of Earth's surface. The refractive index of air depends on temperature, giving rise to refraction effects...
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which become optically inaccessible. Matching the refractive index minimises reflection, refraction, diffraction and rotations that occurs at the interfaces...
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step-index profile is a refractive index profile characterized by a uniform refractive index within the core and a sharp decrease in refractive index at...
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Optical properties of water and ice (section Refractive index (real and imaginary parts) for liquid water)
The refractive index of water at 20 °C for visible light is 1.33. The refractive index of normal ice is 1.31 (from List of refractive indices). In general...
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be assigned a negative refractive index. Such materials are sometimes called "double negative" materials. Negative refraction occurs at interfaces between...
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Lüneburg lens) is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index n decreases radially from the center to the outer...
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The Sellmeier equation is an empirical relationship between refractive index and wavelength for a particular transparent medium. The equation is used to...
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a material is called the refractive index n of the material (n = c/v). For example, for visible light, the refractive index of glass is typically around...
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Fused quartz (section Refractive index)
Experimental data for the real (refractive index) and imaginary (absorption index) parts of the complex refractive index of fused quartz reported in the...
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Refraction is generally accompanied by partial reflection. When waves are refracted from a medium of lower propagation speed (higher refractive index)...
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Anti-reflective coating (section Index-matching)
transparent thin film structures with alternating layers of contrasting refractive index. Layer thicknesses are chosen to produce destructive interference in...
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represents the refractive indices and associated polarizations of light, as functions of the orientation of the wavefront, in a doubly-refractive crystal (provided...
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Differential refractometer (redirect from Refractive index detector)
differential refractometer (DRI), or refractive index detector (RI or RID) is a detector that measures the refractive index of an analyte relative to the solvent...
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Optical fiber (section Refractive index)
The refractive index of a medium is calculated by dividing the speed of light in a vacuum by the speed of light in that medium. The refractive index of...
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called the quadratic electro-optic (QEO) effect, is a change in the refractive index of a material in response to an applied electric field. The Kerr effect...
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traveling between media of different refractive indices may both reflect and refract at the interface. The refractive index will typically alternate over a...
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is an approximate measure of the material's dispersion (change of refractive index versus wavelength), with high values of V indicating low dispersion...
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