Band-extended angular spectrum method for resolution-enhanced digital holography

Wenhui Zhang; Hao Zhang; Guofan Jin

doi:10.1117/12.2573451

10 October 2020 Band-extended angular spectrum method for resolution-enhanced digital holography

Wenhui Zhang, Hao Zhang, Guofan Jin

Author Affiliations +

Proceedings Volume 11551, Holography, Diffractive Optics, and Applications X; 115510O (2020) https://doi.org/10.1117/12.2573451
Event: SPIE/COS Photonics Asia, 2020, Online Only

Abstract

We have proposed a band-extended angular spectrum method (BEASM) for the accurate and efficient diffraction calculation. The proposed BEASM has been used for a resolution-enhanced digital holographic imaging. By rearranging the sampling points of the transfer function in the spatial frequency domain according to the sampling theorem, more effective object spectrum can be transferred during the diffraction calculation which is the key of the numerical reconstruction in digital holography. Therefore, higher resolution imaging has been achieved thanks to the extension of the computational bandwidth. Both numerical simulation and optical experiments have been carried out to validate the proposed method.

Conference Presentation

Citation Download Citation

Wenhui Zhang, Hao Zhang, and Guofan Jin "Band-extended angular spectrum method for resolution-enhanced digital holography", Proc. SPIE 11551, Holography, Diffractive Optics, and Applications X, 115510O (10 October 2020); https://doi.org/10.1117/12.2573451

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