Non-recursive transport of intensity phase retrieval with the transport of phase
- Creators
- Zhou, Haowen
- Guo, Haiyun
- Banerjee, Partha P.
Abstract
The transport of intensity equation (TIE) is a non-interferometric phase retrieval method that originates from the imaginary part of the Helmholtz equation and is equivalent to the law of conservation of energy. From the real part of the Helmholtz equation, the transport of phase equation (TPE), which represents the Eikonal equation in the presence of diffraction, can be derived. The amplitude and phase for an arbitrary optical field should satisfy these coupled equations simultaneously during propagation. In this work, the coupling between the TIE and TPE is exploited to improve the phase retrieval solutions from the TIE. Specifically, a non-recursive fast Fourier transform (FFT)-based phase retrieval method using both the TIE and TPE is demonstrated. Based on the FFT-based TIE solution, a correction factor calculated by the TPE is introduced to improve the phase retrieval results.
Additional Information
© 2021 Optica Publishing Group. Optica Open Access Publishing Agreement. Received 27 September 2021; revised 29 November 2021; accepted 29 November 2021; posted 3 December 2021; published 15 December 2021. Haowen Zhou would like to acknowledge the support of the University of Dayton under a graduate assistantship award. The authors would also like to acknowledge Dr. Sarangan at Nanofab Lab at the University of Dayton for the fabrication of the grating sample. Data Availability. Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request. The authors declare no conflicts of interest.Attached Files
Published - ao-61-5-B190.pdf
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Additional details
- Eprint ID
- 113741
- Resolver ID
- CaltechAUTHORS:20220304-60703000
- Created
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2022-03-07Created from EPrint's datestamp field
- Updated
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2022-07-25Created from EPrint's last_modified field