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

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. © (2023) Society of Photo-Optical Instrumentation Engineers (SPIE)

Keywords

Beams, Algorithms, Synchrotrons, Near infrared radiation, Diffraction, Schwarzschild Metric, Alignment

Citation

Han, M., Smith, D., Ng, S. H., Katkus, T., John Francis Rajeswary, A. S., Praveen, P. A., Tobin, M., Vongsvivut, J., Juodkazis, S., & Anand, V. (2023). Three-dimensional phase imaging with near infrared synchrotron beam using phase-retrieval algorithm. Paper presented to Practical Holography XXXII: Displays, Materials and Applications, 29-31 January 2018, San Francisco, California, United States. In Pierre-Alexandre J. Blanche, Seung-Hyun Lee (eds), Proceedings of SPIE Vol. 12445. doi:10.1117/12.2654911

URI

https://apo.ansto.gov.au/handle/10238/15543

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