plane wavefront
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Wavefront — In optics and physics, a wavefront is the locus (a line, or, in a wave propagating in 3 dimensions, a surface) of points having the same phase. Since infrared, optical, x ray and gamma ray frequencies are so high, the temporal component of… … Wikipedia
Wavefront curvature sensor — A wavefront curvature sensor is a device for measuring the aberrations of an optical wavefront. Like a Shack Hartmann sensor it uses an array of small lenses (or lenslets) to focus the wavefront into an array of spots. Unlike the Shack Hartmann,… … Wikipedia
Plane wave — [ real part of a plane wave travelling up.] In the physics of wave propagation (especially electromagnetic waves), a plane wave (also spelled planewave) is a constant frequency wave whose wavefronts (surfaces of constant phase) are infinite… … Wikipedia
Monochromatic electromagnetic plane wave — In general relativity, the monochromatic electromagnetic plane wave spacetime is the analog of the monochromatic plane waves known from Maxwell s theory. The precise definition of the solution is a bit complicated, but very instructive. Any exact … Wikipedia
Holography — (from the Greek, ὅλος hólos whole + γραφή grafē writing, drawing) is a technique that allows the light scattered from an object to be recorded and later reconstructed so that it appears as if the object is in the same position relative to the… … Wikipedia
Shearing interferometer — The shearing interferometer is an extremely simple means to observe interference and to use this phenomenon to test the collimation of light beams, especially from laser sources which have a coherence length which is usually a lot longer than the … Wikipedia
James Webb Space Telescope — General information Organization NASA[1], with significant contributions from ESA and CSA … Wikipedia
Mach-Zehnder interferometer — The Mach Zehnder interferometer (named after physicists Ludwig Mach (son of Ernst Mach) and Ludwig Zehnder) is a device used to determine the phase shift caused by a small sample which is placed in the path of one of two collimated beams (thus… … Wikipedia
collimated — adjective of light beams whose rays are parallel and thus has a plane wavefront 2008. Wolf Rayet stars are also argued to give rise to gamma ray bursts, a related but rare class of explosions characterized by highly collimated relativistic jets.… … Wiktionary
Optical aberration — v · d · e Optical aberration … Wikipedia
Adaptive optics — (AO) is a technology used to improve the performance of optical systems by reducing the effects of rapidly changing optical distortion. It is used in astronomical telescopes and laser communication systems to remove the effects of atmospheric… … Wikipedia
