optical interferometers

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• Optical interferometry — combines two or more light waves in an optical instrument in such a way that interference occurs between them. Early interferometers used white light sources and also monochromatic light from atomic sources (e.g., Young s double slit experiment… …   Wikipedia

• Optical Coherence Tomography — Optische Kohärenztomografie (engl. optical coherence tomography, OCT) ist ein Untersuchungsverfahren, bei dem Licht geringer Kohärenzlänge mit Hilfe eines Interferometers zur Entfernungsmessung reflektiver Materialien eingesetzt wird. Vorteile… …   Deutsch Wikipedia

• Optical telescope — Eight Inch refracting telescope (Chabot Space and Science Center) An optical telescope is a telescope which is used to gather and focus light mainly from the visible part of the electromagnetic spectrum for directly viewing a magnified image for… …   Wikipedia

• Optical cavity — An optical cavity or optical resonator is an arrangement of mirrors that forms a standing wave cavity resonator for light waves. Optical cavities are a major component of lasers, surrounding the gain medium and providing feedback of the laser… …   Wikipedia

• Optical coating — Optically coated mirrors and lenses. An optical coating is one or more thin layers of material deposited on an optical component such as a lens or mirror, which alters the way in which the optic reflects and transmits light. One type of optical… …   Wikipedia

• Optical modulator — An optical modulator is a device which is used to modulate a beam of light. The beam may be carried over free space, or propagated through an optical waveguide. Depending on the parameter of a light beam which is manipulated, modulators may be… …   Wikipedia

• optical interferometer — ▪ instrument       instrument for making precise measurements for beams of light of such factors as length, surface irregularities, and index of refraction. It divides a beam of light into a number of beams that travel unequal paths and whose… …   Universalium

• Navy Prototype Optical Interferometer — (NPOI) Layout The Navy Prototype Optical Interferometer (NPOI[1] note recently the Protoype was dropped so that the facility is now called NOI ), is an astronomical interferometer [2] operated by the United States Naval …   Wikipedia

• List of astronomical interferometers at visible and infrared wavelengths — Current Performance of Ground Based Interferometers Here is a list of currently existing astronomical optical interferometers (i.e. operating from visible to mid infrared wavelengths), and some parameters describing their performance.Columns 2 5… …   Wikipedia

• Fabrication and testing of optical components — Optical fabrication and testing spans an enormous range of manufacturing procedures and optical test configurations. The manufacture of a conventional spherical lens typically begins with the generation of the optic s rough shape by grinding a… …   Wikipedia

• Astronomical optical interferometry — One of the first astronomical interferometers was built on the Mount Wilson Observatory s reflector telescope in 1920 in order to measure the diameters of stars. The red giant star Betelgeuse was among the first to have its diameter determined in …   Wikipedia