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Nanofabrication using two-photon-photopolymerision (2PP) can be used to create complex 3D structures with sub-diffraction-limited resolution for studying a range of microscopic systems. In this work we discuss how the addition of a spatial light modulator (SLM) can optimise the printing process through in-situ aberration correction and wavefront engineering. We show how digital holograms are used to control and fabricate complex patterns using various Gerchberg-Saxton algorithms. We demonstrate the necessity for aberration correction when printing using many independently controlled foci and fabricate devices that are used to study complex biological systems.
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Declan Armstrong, Halina Rubinsztein-Dunlop, Alexander B. Stilgoe, "Nanofabrication using structured light," Proc. SPIE PC12198, Optical Trapping and Optical Micromanipulation XIX, PC1219809 (3 October 2022); https://doi.org/10.1117/12.2634116