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Complementary Speckle Patterns: Deterministic Interchange of Intrinsic Vortices and Maxima through Scattering Media.
- Source :
-
Physical review letters [Phys Rev Lett] 2017 Jan 27; Vol. 118 (4), pp. 043903. Date of Electronic Publication: 2017 Jan 27. - Publication Year :
- 2017
-
Abstract
- Intensity maxima and zeros of speckle patterns obtained behind a diffuser are experimentally interchanged by applying a spiral phase delay of charge ±1 to the impinging coherent beam. This transform arises from the expectation that tightly focused beams, which have a planar wave front around the focus, are so changed into vortex beams and vice versa. The statistics of extrema locations and the intensity distribution of the so-generated "complementary" patterns are characterized by numerical simulations. It is demonstrated experimentally that the incoherent superposition of the three "complementary speckle patterns" yield a synthetic speckle grain size enlarged by a factor of sqrt[3]. A cyclic permutation of optical vortices and intensity maxima is unexpectedly observed and discussed.
Details
- Language :
- English
- ISSN :
- 1079-7114
- Volume :
- 118
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 28186813
- Full Text :
- https://doi.org/10.1103/PhysRevLett.118.043903