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Title of Journal: Appl Phys B

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Abbravation: Applied Physics B

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Springer-Verlag

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DOI

10.1016/0165-1161(84)90119-5

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1432-0649

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Parametric characteristics for a broadband Gaussia

Authors: H Mao D Zhao
Publish Date: 2010/02/09
Volume: 100, Issue: 3, Pages: 611-616
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Abstract

Based on the theory of the secondorder intensity moment and the method of Fourier transformation some parameters for a broadband Gaussian beam in free space are studied analytically and numerically It is shown that the beam width and the divergence angle for a broadband Gaussian beam in free space are both larger than those for a monochromatic Gaussian beam The broader the bandwidth of a light beam the larger the beam width and the divergence angle of the light beam The beam propagation factor for a broadband Gaussian beam in free space is larger than that for a monochromatic Gaussian beam and increases slowly with bandwidth The kurtosis parameter for a broadband Gaussian beam in free space increases with propagation distance and bandwidth The kurtosis parameter for a broadband Gaussian beam with much broader bandwidth increases more remarkably with propagation distance

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