Holographic multi-focus 3D two-photon polymerization with real-time calculated holograms

Gaszton Vizsnyiczai, Lóránd Kelemen, Pál Ormos

Research output: Contribution to journalArticle

51 Citations (Scopus)


Two-photon polymerization enables the fabrication of micron sized structures with submicron resolution. Spatial light modulators (SLM) have already been used to create multiple polymerizing foci in the photoresist by holographic beam shaping, thus enabling the parallel fabrication of multiple microstructures. Here we demonstrate the parallel two-photon polymerization of single 3D microstructures by multiple holographically translated foci. Multiple foci were created by phase holograms, which were calculated real-time on an NVIDIA CUDA GPU, and displayed on an electronically addressed SLM. A 3D demonstrational structure was designed that is built up from a nested set of dodecahedron frames of decreasing size. Each individual microstructure was fabricated with the parallel and coordinated motion of 5 holographic foci. The reproducibility and the high uniformity of features of the microstructures were verified by scanning electron microscopy.

Original languageEnglish
Pages (from-to)24217-24223
Number of pages7
JournalOptics Express
Issue number20
Publication statusPublished - Oct 6 2014

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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