光学
空间光调制器
泽尼克多项式
飞秒
体素
球差
激光器
镜头(地质)
材料科学
光线追踪(物理)
显微镜
物理
波前
计算机科学
人工智能
作者
Gabrielius Kontenis,Darius Gailevičius,Linas Jonušauskas,Vytautas Purlys
出处
期刊:Optics Express
[Optica Publishing Group]
日期:2020-07-13
卷期号:28 (19): 27850-27850
被引量:18
摘要
Optical aberrations are a type of optical defect of imaging systems that hinder femtosecond direct laser write machining by changing voxel size and aspect ratio in different sample depths. We present an approach of compensating such aberrations using a liquid crystal spatial light modulator (SLM). Two methods for correcting are explored. They are based on backward ray tracing and Zernike polynomials. Experiments with a long focal distance lens (F = 25 and 50 mm) and microscope objective (100x, 0.9 NA) have been conducted. Specifically, aberration-free structuring with voxels of a constant aspect ratio of 1-1.5 is carried out throughout a 1 mm thick sample. Results show potential in simplifying direct laser writing and enabling new architectures made possible by near-spherical voxels.
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