Experimental observation of speckle transition

Mingzhou Chen; Chris Dainty

doi:10.1117/12.978222

11 September 2012 Experimental observation of speckle transition

Mingzhou Chen, Chris Dainty

Proceedings Volume 8413, Speckle 2012: V International Conference on Speckle Metrology; 841303 (2012) https://doi.org/10.1117/12.978222
Event: SPECKLE 2012: V International Conference on Speckle Metrology, 2012, Vigo, Spain

Abstract

In isotropic random optical waves, each dark area may contain optical vortices or phase singularities. In this paper, we experimentally generate a speckle pattern and observe its transition along the propagation direction. Experimental results show that the vortex density changes along the propagation direction when the continuous phase part of the speckle field is removed with a spatial light modulator. The contrast ratio of the spackle field also changes due to the transition of the field. Such a transition can be interpreted to a certain extent by the self-annihilation of vortex dipoles due to the least-squares phase removal.

Citation Download Citation

Mingzhou Chen and Chris Dainty "Experimental observation of speckle transition", Proc. SPIE 8413, Speckle 2012: V International Conference on Speckle Metrology, 841303 (11 September 2012); https://doi.org/10.1117/12.978222

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