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I show that different legitimate measures of the amount of diffraction lead to contradictory conclusions concerning the beam profile that experiences minimum diffraction for a given beam width. In particular, when the Renyi entropy is used, the Gaussian beams no longer provide minimum diffraction, i.e., they do not have maximum quality. (c) 2006 Optical Society of America.
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UNCERTAINTY RELATIONS
QUANTUM LOCALIZATION
PHASE-SPACE
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3.3
论文数:
4.0W
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