Speckle with a finite number of steps
The statistical properties of classical, fully developed speckle must be modified when the speckle is generated by a random walk with a finite number of steps. It is shown that for such speckle, the standard negative-exponential probability density function for speckle intensity often overestimates...
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| Published in | Applied optics (2004) Vol. 47; no. 4; p. A111 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.02.2008
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| Online Access | Get more information |
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| Summary: | The statistical properties of classical, fully developed speckle must be modified when the speckle is generated by a random walk with a finite number of steps. It is shown that for such speckle, the standard negative-exponential probability density function for speckle intensity often overestimates the probability that the intensity exceeds a given threshold. In addition, while any linear transformation of the fields in a classical speckle pattern does not change the intensity statistics, the same is not true for finite-step speckle. The implications of these facts in certain applications are discussed. |
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| ISSN: | 1559-128X |
| DOI: | 10.1364/AO.47.00A111 |