beam divergence


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beam divergence

[′bēm də‚vər·jəns]
(optics)
The angle between points on opposite sides of a light beam at which the irradiance drops to 1/ e (0.37) times its maximum value.
(physics)
The angular spread in the directions of the components of a beam of particles or radiation.

beam divergence

(Brit.) Same as beam spread.
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References in periodicals archive ?
The VCSEL arrays combine high power, high energy efficiency, narrow spectral width, narrow beam divergence, low speckle, and high reliability characteristics into a single miniaturized light source.
The CVLL 350-CL90 pulsed laser diode beam divergence (FWHM) is 8 x 8 degrees.
Note that the d-spacing spread [DELTA]d/d and the mosaic spread n of the crystal affect the beam divergence.
The entire Series 8000 family of laser pump products is based on Intense's next generation of single and multi-emitter chips that incorporate narrow beam divergence and Intense's patented Quantum Well Intermixing (QWI) technology to maximise power, brightness, and reliability.
Distance to target, which impacts beam divergence and which would cause a dilution in precision; 2.
the product of beam radius at the beam waist with the far-field beam divergence angle
The first system consists of motorised slits and is most useful for bulk measurements when rapid counting times are required and beam divergence may be less critical.
The four formed IR laser beams are positioned 150 um apart with beam divergence 10[degrees] (width) x 30[degrees] (height).
The nearly monochromatic property, the very confined beam divergence over great distances, and the energy of a laser also can have an effect on the eye.
Different machines are used for different fixture arrangements governed by blank size and radiation beam divergence requirements," Sweat explains.
The FSO system provides excellent reliability through its patented pointing and tracking technology and exceptionally high security due to its narrow beam divergence.