High-throughput fabrication of right-angle prism mirrors with selective metalization by two-step 3D printing and computer vision alignment

Abstract
We propose a dual step -3D printing (two-photon lithography) strategy, which is the 3D version of the classic lithography etching-mask strategy, to achieve selective gold metallization for the realization of reflective micro-optics. We apply this strategy to obtain right-angle prism micro-mirrors used to create dynamic counterpropagating optical traps for biological samples in a holographic optical trapping setup with a single low-NA objective. We print the prisms on standard glass coverslips to create integrated optical trapping chips. We show the automatization of alignment between prisms and masks by a computer vision software.

Citation
Bertoncini, A., Cojoc, G., Guck, J., & Liberale, C. (2020). High-throughput fabrication of right-angle prism mirrors with selective metalization by two-step 3D printing and computer vision alignment. Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIII. doi:10.1117/12.2544147

Publisher
SPIE-Intl Soc Optical Eng

Conference/Event Name
SPIE OPTO, 2020

DOI
10.1117/12.2544147

Additional Links
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11292/2544147/High-throughput-fabrication-of-right-angle-prism-mirrors-with-selective/10.1117/12.2544147.full

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