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- Title
Computation Theory of Large-Scale Partially Coherent Imaging by the Modified Modal Expansion Method.
- Authors
Li, Jiaqi; Yang, Huaijiang
- Abstract
The numerical calculation of partially coherent imaging involves a fourfold integral, which is numerically complex and impracticable to be calculated directly. The use of coherent-mode decomposition (CMD) can make this problem more manageable but finding the coherent-modes for complicated partial coherent fields (without already-known coherent-mode expansion) are rather computationally intensive. In this letter, a modified modal expansion method is proposed, which significantly reduces the requirement of computational resources. The propagation of partial coherence in imaging systems with extremely large sampling number could be handled by an ordinary computer. A comparison between the new method and the traditional method in terms of memory resource requirements and computational time consumption is also detailed in this article. We will also show that this method could deal with the anisoplanatic imaging cases while maintaining the same computational efficiency.
- Subjects
FOURIER transform optics; COHERENCE (Optics); IMAGING systems; NUMERICAL calculations; OPTICAL images
- Publication
Photonics, 2024, Vol 11, Issue 7, p668
- ISSN
2304-6732
- Publication type
Article
- DOI
10.3390/photonics11070668