optical material

См. также в других словарях:

• Optical parametric oscillator — Infrared optical parametric oscillator An optical parametric oscillator (OPO) is a parametric oscillator which oscillates at optical frequencies. It converts an input laser wave (called pump ) into two output waves of lower frequency (ωs,ωi) by… …   Wikipedia

• Optical window — Rough plot of Earth s atmospheric transmittance (or opacity) to various wavelengths of electromagnetic radiation, including visible light. The meaning of this term depends on the context: In astronomy, the optical window is the optical portion of …   Wikipedia

• Optical rotation — (optical activity) is the turning of the plane of linearly polarized light about the direction of motion as the light travels through certain materials. It occurs in solutions of chiral molecules such as sucrose (sugar), solids with rotated… …   Wikipedia

• Optical disc — Optical media redirects here. For transmission media for light, see Medium (optics). The optical lens of a compact disc drive. In computing and optical disc recording technologies, an optical disc is a flat, usually circular disc which encodes… …   Wikipedia

• Optical tweezers — (originally called single beam gradient force trap ) are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch… …   Wikipedia

• Optical thickness — Optical thickness, also called optical depth, is the depth of a material or medium in which the intensity of light (or other radiation) of a given frequency is reduced by a factor of 1/e. In rough terms 1/3 of the light is absorbed within one… …   Wikipedia

• Optical disc authoring — Optical discs Optical disc Optical disc drive Optical disc authoring Authoring software Recording technologies Recording modes Packet writing Optical media types …   Wikipedia

• Optical transfection — is the process of introducing nucleic acids into cells using light. Typically, a laser is focussed to a diffraction limited spot ( 1 µm diameter) using a high numerical aperture microscope objective. The plasma membrane of a cell is then… …   Wikipedia

• Optical sectioning — is the process by which a suitably designed microscope can produce clear images of a focal planes deep within a thick sample. This is used to reduce the need for thin sectioning using instruments such as the microtome. Many different techniques… …   Wikipedia

• Optical axis grating — Optical axis gratings (OAGs) are gratings of optical axis of a birefringent material. In OAGs, the birefringence of the material is constant, while the direction of optical axis is periodically modulated in a fixed direction. In this way they are …   Wikipedia

• Optical axis gratings — (OAGs) are gratings of optical axis of a birefringent material. In OAGs, the birefringence of the material is constant, while the direction of optical axis is periodically modulated in a fixed direction. In this way they are different from the… …   Wikipedia