Singular skeleton in speckle field

Haibin Sun; Tingting Liu; Jun Chen; Lian Zhang; Ping Sun Sr.

doi:10.1117/12.2575342

12 October 2020 Singular skeleton in speckle field

Haibin Sun, Tingting Liu, Jun Chen, Lian Zhang, Ping Sun Sr.

Proceedings Volume 11551, Holography, Diffractive Optics, and Applications X; 115511T (2020) https://doi.org/10.1117/12.2575342
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

Abstract

Phase extraction and applications of the speckle vortex field with spiral wavefront and stable core structures of phase singularities has become an important research content in the field of optical measurement. Phase singularities in the speckle field constitute singular skeleton. We use an experimental system to measure the deformation displacement based on the singular skeleton. In the experiment, a liquid crystal spatial light modulator (LC–SLM) is used to generate speckle field, and the output speckle image is captured by the CCD camera. By processing the speckle pattern, the singular skeleton of the speckle field is depicted. Based on the singular skeleton, the deformation translational displacement of the test sample is obtained. The experimental results show that high-resolution optical measurement methods can be developed based on the singular skeleton of the speckle field.

Citation Download Citation

Haibin Sun, Tingting Liu, Jun Chen, Lian Zhang, and Ping Sun Sr. "Singular skeleton in speckle field", Proc. SPIE 11551, Holography, Diffractive Optics, and Applications X, 115511T (12 October 2020); https://doi.org/10.1117/12.2575342

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