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IEVref:731-01-34ID:
Language:enStatus: Standard
Term: gaussian beam
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Definition: a beam of optical radiation whose electric field amplitude distribution is Gaussian when measured across a cross section

NOTE – When such a beam is circular in cross section, the amplitude is :

Е(r) = E (0) exp [– (r / w)2]

where r is the distance from beam centre and w is the radius at which the amplitude is 1/e of its value on the axis.


Publication date:1991-10
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