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 ?
With a deployment temperature range of -40C to +80C unique on the market to date, the low beam divergence of ~ 0.
Edge-emitting laser is typically used in many approaches to improve their vertical beam divergence as multi active region [1], double barrier separate confinement heterostructure [2] and inserting anti- guiding layers [3, 4].
The NHZ varies based on wavelength of the lasers used, beam divergence and laser fiber size.
Important parameters such as beam divergence and transmitter power depend on pointing accuracy as well and thus, influence the laser terminal design.
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.
Some deficiencies in the systems that are used commonly were: in non-digital tomography, the focus of the rotating axis fix point overlaps with a number of unwanted images, due to the inappropriate depth perception that ultimately causes obscurity;2,3 beam divergence at the time of cone-shaped radiation emission allows image distortion; incomplete elimination of unwanted images causes partial blurring of the wanted slice, which is called non-digital tomographic blurring and which compromises its diagnostic value;4-6 and, with the widening of rotating angulations, the blurring is increased, and the depth perception is not reasonable for confident diagnosis, and if the thickness of the tomographic slice is decreased, it causes blurring which is a deficiency of the tomographic system.
The full-width at half-maximum beam divergence is 10[degrees] x 24[degrees].
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.
It is important for understanding the effects of beam divergence due to diffraction and focusing due to the Kerr nonlinearity on the propagation and spatial distribution of the Lorentz beam.
t]), transmit beam divergence ([theta] in mrad), surface Area of receiver aperture ([A.