Journal
LIGHT-SCIENCE & APPLICATIONS
Volume 9, Issue 1, Pages -Publisher
SPRINGERNATURE
DOI: 10.1038/s41377-020-00362-z
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Funding
- National Natural Science Foundation of China [51875544, 91963127, 51675503, 61805230, 51805509]
- USTC Research Funds of the Double First-Class Initiative [YD2090002005]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences [2017495]
- National Key R&D Program of China [2018YFB1105400]
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Efficient calculation of the light diffraction in free space is of great significance for tracing electromagnetic field propagation and predicting the performance of optical systems such as microscopy, photolithography, and manipulation. However, existing calculation methods suffer from low computational efficiency and poor flexibility. Here, we present a fast and flexible calculation method for computing scalar and vector diffraction in the corresponding optical regimes using the Bluestein method. The computation time can be substantially reduced to the sub-second level, which is 10(5) faster than that achieved by the direct integration approach (similar to hours level) and 10(2) faster than that achieved by the fast Fourier transform method (similar to minutes level). The high efficiency facilitates the ultrafast evaluation of light propagation in diverse optical systems. Furthermore, the region of interest and the sampling numbers can be arbitrarily chosen, endowing the proposed method with superior flexibility. Based on these results, full-path calculation of a complex optical system is readily demonstrated and verified by experimental results, laying a foundation for real-time light field analysis for realistic optical implementation such as imaging, laser processing, and optical manipulation.
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