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Introducing non-local correlations into laser speckles
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DOI：10.1364/OE.27.006057.png)
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Abstract
En 中文
Laser speckles have become a fundamental component of the modern optics-research toolbox. Not only are speckle patterns the basis of numerous imaging techniques, but they are also employed to generate optical potentials for cold atoms and colloidal particles. The ability to manipulate a speckle pattern's spatial intensity correlations, particularly long-range (non-local) ones, is essential in numerous applications. A typical fully-developed speckle pattern, however, possesses only short-ranged (local) intensity correlations which are determined by the spatial field correlations. Here, we experimentally demonstrate and theoretically develop a general method for creating fully-developed speckles with strong non-local intensity correlations. The functional form of the spatial intensity correlations can be arbitrarily tailored without altering the field correlations. Our approach provides a versatile and utilitarian framework for enhancing and controlling non-local correlations in speckle patterns. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keywords:
INTENSITY CORRELATION
LIGHT
FLUCTUATIONS
TRANSMISSION
PROPAGATION
SCATTERING
TRANSPORT
FIELD
Journal
IF:
3.3
Papers:
6.1W
Citations:
14.3W