Digital off-axis holography with angular multiplexing and synthetic aperture

Zhaomin Wang; Weijuan Qu; Fang Yang; Yongfu Wen; Asundi Anand

doi:10.1117/12.2189442

17 July 2015 Digital off-axis holography with angular multiplexing and synthetic aperture

Zhaomin Wang, Weijuan Qu, Fang Yang, Yongfu Wen, Asundi Anand

Proceedings Volume 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015); 95241C (2015) https://doi.org/10.1117/12.2189442
Event: International Conference on Optical and Photonic Engineering (icOPEN2015), 2015, Singapore, Singapore

Abstract

This paper discusses conventional synthetic-aperture method combined angular multiplexing in digital holography to increase the resolution and to enlarge the field of view at the same time. A structured illumination is used to realize angular multiplexing. A camera is moved by a motorized x-y stage, and scanning is performed at imaging plane. In this way we extend the band-pass for single hologram recording as well as obtain a greater sensor area resulting in a larger numerical aperture (NA). A larger NA enables a more detailed reconstruction combined with a smaller depth of field. Moreover, a phase map of the object is experimentally presented.

Citation Download Citation

Zhaomin Wang, Weijuan Qu, Fang Yang, Yongfu Wen, and Asundi Anand "Digital off-axis holography with angular multiplexing and synthetic aperture", Proc. SPIE 9524, International Conference on Optical and Photonic Engineering (icOPEN 2015), 95241C (17 July 2015); https://doi.org/10.1117/12.2189442

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