Phase space retrieval and the imaging system effect

Runnan Zhang; Jiasong Sun; Chao Zuo; Qian Chen

doi:10.1117/12.2573628

10 October 2020 Phase space retrieval and the imaging system effect

Runnan Zhang, Jiasong Sun, Chao Zuo, Qian Chen

Proceedings Volume 11549, Advanced Optical Imaging Technologies III; 1154917 (2020) https://doi.org/10.1117/12.2573628
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

Abstract

Phase space optics allows the four-dimensional (4D) simultaneous visualization of both space (x) and spatial frequency (u) information. The Wigner distribution function (WDF) is commonly used to represent the phase space characterization. Compared with the coherent optical field expressed by two-dimensional (2D) complex amplitude, the 4D WDF (2D space and 2D spatial frequency) can characterize optical field with arbitrary coherent state. It is especially advantageous for the characterization of partially coherent optical fields. The WDF is real and may have negative values, which are the result of phase-space interference. In this paper, an improved phase-space retrieval method is demonstrated. First, capture three-dimensional intensity focal stack by camera sensors. Then, phase space tomography (PST) combined with a non-linear iterative algorithm is conducted to reconstruct the whole WDF. We further analyzed the effect of the imaging system, i.e., the illumination aperture and the aperture of objective lens effect.

Conference Presentation

Citation Download Citation

Runnan Zhang, Jiasong Sun, Chao Zuo, and Qian Chen "Phase space retrieval and the imaging system effect", Proc. SPIE 11549, Advanced Optical Imaging Technologies III, 1154917 (10 October 2020); https://doi.org/10.1117/12.2573628

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