Characterization and optimization of coupled-wave simulations for complex heterogeneous samples
Characterization and optimization of coupled-wave simulations for complex heterogeneous samples
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复杂异质样品耦合波模拟的表征和优化
DOI：
10.1117/12.2609179
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Mayerich, David
中科院分区：
文献类型：
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作者：
Sun, Ruijiao;Reddy, Rohith K.;Mayerich, David
理解光和小样品在衍射极限下的相互作用对于解决显微镜中的逆问题至关重要。光与物质相互作用的几种模型已经被提出，包括Born和Rytov近似，Mie理论，T矩阵，有限元方法和耦合波理论。耦合波方法通过允许在傅立叶域中细化样本，为真实样本提供了独特的优势，其中许多真实样本被认为是稀疏的。然而，该模型仍然依赖于计算密集型操作，因为样本和字段分辨率增加。在本文中，我们开发了一个优化的开源工具，使用已建立的耦合波理论。这对于实际问题在计算上是有效的，因为许多实际样本在傅立叶域中是稀疏的。然后分析了模型的计算复杂度，并对模型进行了优化。
Understanding the interactions between light and small samples at the diffraction limit is critical for solving inverse problems in microscopy. Several models for light and matter interactions have been proposed, including Born and Rytov approximations, Mie theory, T-matrix, Finite element methods, and coupled wave theory. Coupled wave approaches provide unique advantages for realistic samples by allowing refinement of the sample in the Fourier domain, where many realistic samples are considered sparse. However, this model still relies on computationally intensive operations as the sample and field resolution increases. In this paper, we develop an optimized open-source tool using established coupled-wave theory. This can be computationally efficient for realistic problems, since many practical samples are sparse in the Fourier domain. Then we analyze the computational complexity of the model and optimize the process.
BLAS 和 LAPACK 在共享内存标量多处理器上的性能
DOI：
10.1016/s0167-8191(05)80064-x
发表时间：
1991
期刊：
Parallel Comput.
影响因子：
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作者：
C. Phillips
通讯作者：
C. Phillips