collimated beam

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• Collimated light — In the lower picture, the light has been collimated. Collimated light is light whose rays are parallel, and therefore will spread slowly as it propagates. The word is related to collinear and implies light that does not disperse with distance… …   Wikipedia

• Beam divergence — The beam divergence of an electromagnetic beam is an angular measure of the increase in beam diameter with distance from the optical aperture or antenna aperture from which the electromagnetic beam emerges. The term is relevant only in the far… …   Wikipedia

• beam — 1. Any bar whose curvature changes under load; in dentistry, frequently used instead of “bar.” 2. A collimated emission of light or other radiation, such as an x ray b.. [O.H.G. Boum] Balkan b. SYN: Balkan frame. cantilever b. in dentistry, a b.… …   Medical dictionary

• Laser beam profiler — A laser beam profiler captures, displays, and records the spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation path. Since there are many types of lasers ultraviolet, visible, infrared, continuous… …   Wikipedia

• Gaussian beam — In optics, a Gaussian beam is a beam of electromagnetic radiation whose transverse electric field and intensity (irradiance) distributions are well approximated by Gaussian functions. Many lasers emit beams that approximate a Gaussian profile, in …   Wikipedia

• Convolution for optical broad-beam responses in scattering media — Photon transport theories, such as the Monte Carlo method, are commonly used to model light propagation in tissue. The responses to a pencil beam incident on a scattering medium are referred to as Green’s functions or impulse responses. Photon… …   Wikipedia

• External beam radiotherapy — otherwise known as teletherapy, is the most frequently used form of radiotherapy. The patient sits or lies on a couch and an external source of radiation is pointed at a particular part of the body. Kilovoltage (also known as Superficial or Deep) …   Wikipedia

• Crossed molecular beam — experiments are chemical experiments where two beams of atoms or molecules are collided together to elucidate the dynamics of the chemical reaction, and can detect individual reactive collisions.[1] Technique In a crossed molecular beam apparatus …   Wikipedia

• Atomic beam — is special case of particle beam; it is the collimated flux (beam) of neutral atoms.The imaging systems using the slow atomic beams can use the Fresnel zone plate (Fresnel diffraction lens) of a Fresnel diffraction mirror as focusing element. The …   Wikipedia

• particle beam — noun a collimated flow of particles (atoms or electrons or molecules) • Hypernyms: ↑beam, ↑ray, ↑electron beam • Hyponyms: ↑ion beam, ↑ionic beam …   Useful english dictionary

• particle beam — noun A beam of atoms, ions or subatomic particles that has been accelerated by some device and collimated by magnets and/or electrostatic lenses …   Wiktionary