3D laser lithography is a powerful technology to manufacture free-form micro- and nano-optical components. However, practical applications of these components are limited due to lack of knowledge of their optical resilience to intense femtosecond laser radiation, especially in the case of complex-shaped 3D structures. In this report, 3D woodpile structures were fabricated using 3D laser lithography in order to evaluate their laser-induced damage threshold (LIDT). For that S-on-1 testing method was performed on fabricated polymeric nanolatices showing their resilience to femtosecond radiation in the fluence range from tens to hundreds mJ/cm². Furthermore, numerical modeling and experimental investigation were employed to deduce if the chosen geometry provided any photonic properties that could yield a change in the LIDT.

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Agnė Butkutė, Linas Jonušauskas, Darius Gailevičius, Vygantas Mizeikis, and Mangirdas Malinauskas, "Femtosecond laser induced damage threshold (LIDT) of 3D nanolithography made micro- and nano-optical elements," Proc. SPIE 10909, Laser 3D Manufacturing VI, 109090T (Presented at SPIE LASE: February 07, 2019; Published: 4 March 2019); https://doi.org/10.1117/12.2509992.