Micropatterning of hemispherical lasing droplets by optical vortex laser-induced forward transfer

Ken-ichi Yuyama; Haruki Kawaguchi; Rong Wei; Takashige Omatsu

doi:10.1117/12.2676638

5 October 2023 Micropatterning of hemispherical lasing droplets by optical vortex laser-induced forward transfer

Ken-ichi Yuyama, Haruki Kawaguchi, Rong Wei, Takashige Omatsu

Proceedings Volume PC12663, Molecular and Nanophotonic Machines VI; PC126630B (2023) https://doi.org/10.1117/12.2676638
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States

Abstract

We demonstrate the laser-induced forward transfer of fluorescent liquid droplets with viscosity 100 times higher than that of water. The optical vortex allows the high-definition direct-print of uniform microdroplets with no satellite droplets at desired locations within 10% positioning error, while the Gaussian laser produces only irregular printed droplets with many undesired satellite droplets. The printed droplets act as a laser with whispering-galley-modes. We discuss the droplet formation mechanism from the viewpoint of laser-induced cavitation based on the observation with a high-speed camera.

Conference Presentation

Citation Download Citation

Ken-ichi Yuyama, Haruki Kawaguchi, Rong Wei, and Takashige Omatsu "Micropatterning of hemispherical lasing droplets by optical vortex laser-induced forward transfer", Proc. SPIE PC12663, Molecular and Nanophotonic Machines VI, PC126630B (5 October 2023); https://doi.org/10.1117/12.2676638

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