Generation of fractal speckles by means of a spatial light modulator | Zendy

Hideki Funamizu | Zendy; Jun Uozumi | Zendy

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Generation of fractal speckles by means of a spatial light modulator

Author(s) -

Hideki Funamizu,

Jun Uozumi

Publication year - 2007

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.15.007415

Subject(s) - optics , speckle pattern , spatial light modulator , fractal , diffuser (optics) , physics , diffraction , spatial frequency , light intensity , transmittance , light field , fresnel diffraction , ptychography , mathematics , light source , mathematical analysis

It was shown in previous studies that, when a diffuser is illuminated by coherent light with an average spatial intensity distribution obeying a negative power function, the scattered field in the Fraunhofer diffraction region exhibits random fractal properties. The method employed so far for producing such fields has a disadvantage in that generated speckle intensities are low due to small transmittance of fractal apertures used in the illumination optics. To overcome this disadvantage, a generation of fractal speckles by means of a spatial light modulator is proposed. The principle is explained and experimental results are also shown.

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