Three-dimensional phase imaging with near infrared synchrotron beam using phase-retrieval algorithm

Molong Han; Daniel Smith; Soon Hock Ng; Tomas A. Katkus; Aravind Simon John Francis Rajeswary; Periyasamy Angamuthu Praveen; Mark J. Tobin; Jitraporn Vongsvivut; Saulius Juodkazis; Vijayakumar Anand

doi:10.1117/12.2654911

8 March 2023 Three-dimensional phase imaging with near infrared synchrotron beam using phase-retrieval algorithm

Molong Han, Daniel Smith, Soon Hock Ng, Tomas A. Katkus, Aravind Simon John Francis Rajeswary, Periyasamy Angamuthu Praveen, Mark J. Tobin, Jitraporn Vongsvivut, Saulius Juodkazis, Vijayakumar Anand

Author Affiliations +

Proceedings Volume 12445, Practical Holography XXXVII: Displays, Materials, and Applications; 1244511 (2023) https://doi.org/10.1117/12.2654911
Event: SPIE OPTO, 2023, San Francisco, California, United States

Conference Poster

Abstract

The near infrared (NIR) part of the infrared synchrotron beam is usually dumped to improve the signal to noise ratio of spectral imaging. In this study, this NIR synchrotron beam has been extracted and used for three-dimensional (3D) phase imaging. A pinhole was inserted in the path of the fork shaped NIR synchrotron beam and the Airy diffraction pattern was aligned with biochemical samples and the diffracted intensity distribution was captured using an image sensor sensitive to NIR. A phase retrieval algorithm was used to estimate the 3D phase distribution at the object plane from the recorded intensity distribution.

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Molong Han, Daniel Smith, Soon Hock Ng, Tomas A. Katkus, Aravind Simon John Francis Rajeswary, Periyasamy Angamuthu Praveen, Mark J. Tobin, Jitraporn Vongsvivut, Saulius Juodkazis, and Vijayakumar Anand "Three-dimensional phase imaging with near infrared synchrotron beam using phase-retrieval algorithm", Proc. SPIE 12445, Practical Holography XXXVII: Displays, Materials, and Applications, 1244511 (8 March 2023); https://doi.org/10.1117/12.2654911

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