New wavefront split propagator in SRW code and its application in simulation of high-resolution fresnel zone plate

A. He; O. Chubar; J. Dvorak; W. Hu

doi:10.1117/12.2677572

5 October 2023 New wavefront split propagator in SRW code and its application in simulation of high-resolution fresnel zone plate

A. He, O. Chubar, J. Dvorak, W. Hu

Author Affiliations +

Proceedings Volume 12697, Advances in Computational Methods for X-Ray Optics VI; 1269703 (2023) https://doi.org/10.1117/12.2677572
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

A wavefront split propagator dedicated to the simulation of wavefront propagation through high-resolution x-ray nano-focusing optics system has been implemented in Synchrotron Radiation Workshop (SRW). The new propagator integrated the Shifted Angular Spectrum (Shift-AS) method and the sub-wavefront approach with SRW's original transmission optics and standard drift-space propagators. This approach allowed for a significant reduction of memory required for the simulation of wavefront propagation through Fresnel zone plates with very large numbers of zones and other high-resolution focusing optics while preserving the accuracy of the numerical wave-optics calculation. We introduce the two approaches, i.e., the sub-wavefront approach and Shift-AS approach, and describe their implementation and program structure in the new SRW’s wavefront split propagator. Using the potential Fresnel zone plates of Soft X-ray Nanoprobe (SXN) beamline at NSLS-II as examples, we demonstrate this new propagator, and report on its high accuracy and memory-saving capabilities by comparing the calculation result with those by the original propagators, and also point to future applications of this approach.

Conference Presentation

Citation Download Citation

A. He, O. Chubar, J. Dvorak, and W. Hu "New wavefront split propagator in SRW code and its application in simulation of high-resolution fresnel zone plate", Proc. SPIE 12697, Advances in Computational Methods for X-Ray Optics VI, 1269703 (5 October 2023); https://doi.org/10.1117/12.2677572

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