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Adaptive continuous-discrete variables optimization for active learning with extremely sparse data in optical material design

delete2025-08-08
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PRE
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S
Serang Jung
E
Eungkyu Lee *
DOI:doi:10.1088/2632-2153/adf68ddelete
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摘要

摘要

En 中文
由于巨大的参数空间和复杂的质量因数要求,优化平面多层(PML)光学涂层仍然具有挑战性。本研究引入了一种自适应厚度方法,结合主动学习(即一种自适应方案),用于同时进行材料选择和厚度优化,其中厚度在连续光谱中自适应采样,材料状态被标记为离散二元变量以进行灵活的设计探索。在自适应方案中,我们考察了三种机器学习(ML)模型——高斯过程回归、因子分解机(FM)和领域感知FM——作为代理函数的性能,以及特定于ML模型的优化算法,如离散粒子群优化、人工蜂群优化和模拟退火。最优PML结构的次要标准(例如总厚度、层数)被调查并与传统的固定厚度方法(即固定方案)进行了比较。作为一项基准研究,我们使用自适应方案优化了在具有高折射率Si基底上的超薄Ge-YF3抗反射PML涂层。该方案识别出一种最优的五层设计,平均反射率为0.47%,仅需固定方案训练数据的约10%和总可能状态的0.002%,降低了计算成本并提高了实际适用性。此外,我们确认了自适应方案适用于扩展的设计问题,包括二维光子结构和由四种材料组成的多层涂层。
Keyword:
adaptive thickness
active learning
multilayer optical coatings
machine learning
surrogate modeling

期刊

M
Machine Learning-Science and Technology
IF:
4.6
论文数:
1.1K
被引数:
3.4K

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