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9 March 2022 2D micropatterning of fluorescent dye droplets by optical vortex laser induced forward transfer
Ken-ichi Yuyama, Takashige Omatsu
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Proceedings Volume PC12017, Complex Light and Optical Forces XVI; PC120170X (2022) https://doi.org/10.1117/12.2607984
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
We demonstrate the laser induced forward transfer of fluorescent dye solution thin films by employing a single 532-nm nanosecond optical vortex pulse. Upon irradiating the laser pulse, a single microdroplet is ejected from the donor film, and it is forwarded onto a glass substrate a few hundreds of micrometers away from the film. The optical vortex enables us to print well-aligned microdots with the same diameter of 30 µm on the substrate, whereas a conventional Gaussian beam prevents the production of microdots in uniform size. The optical vortex laser induced forward transfer allows the development of micro-patterning of functional materials.
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Ken-ichi Yuyama and Takashige Omatsu "2D micropatterning of fluorescent dye droplets by optical vortex laser induced forward transfer", Proc. SPIE PC12017, Complex Light and Optical Forces XVI, PC120170X (9 March 2022); https://doi.org/10.1117/12.2607984
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KEYWORDS
Optical vortices
Laser optics
Glasses
Pulsed laser operation
Thin films
Gaussian beams
Laser ablation
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