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Beam Diameter
The distance between diametrically opposed points in the cross section of a circular beam where the intensity is reduced by a factor of 1/e (0.368) of the peak level (for safety standards). The value is normally chosen at 1/e2 (0.135) of the peak level for manufacturing specifications.
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- Part of Speech: noun
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- Industry/Domain: Industrial machinery
- Category: Laser equipment
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