Fairy Lights: Difference between revisions
Created page with "==Introduction== thumb|Figure 1. Fairy Lights. (Image: Ochiai et al., 2016) File:Fairy lights system setup.png|thumb|Figure 2. System setup. (Imag..." |
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[[File:Fairy lights applications.png|thumb|Figure 4. Example applications of laser-based graphics technology. (Image: Ochiai et al.)]] | [[File:Fairy lights applications.png|thumb|Figure 4. Example applications of laser-based graphics technology. (Image: Ochiai et al.)]] | ||
Fairy Lights is term given to the images created by a method of rendering aerial and volumetric graphics using a femtosecond laser. The aerial plasma, induced by laser, emits light without interaction with physical matter. The practical result of the ionization of air molecules is crackling, photon-emitting pockets of plasma (voxels) that can be arranged to create moving and interactive images. The technology was developed by researchers at the University of Tsukuba, Utsunomiya University, the Nagoya Institute of Technology and the University of Tokyo and first published in a scientific paper called Fairy Lights in Femtoseconds: Aerial and Volumetric Graphics Rendered by Focused Femtosecond Laser Combined with Computational Holographic Fields. According to Ochiai et al., the main contribution of the paper was “the production of an in-air SLM-based [Spatial Light Modulator] laser-plasma graphics that enables physical contact and interaction by ultra-short pulse duration laser.” <ref name=”1”>Ochiai, Y., Kumagai, K., Hoshi, T., Rekimoto, J. Hasegawa, S. and Hayasaki, Y. Fairy lights in femtoseconds: aerial and volumetric graphics rendered by focused femtosecond laser combined with computational holographic fields. Arxiv</ref> | Fairy Lights is term given to the images created by a method of rendering aerial and volumetric graphics using a femtosecond laser. The aerial plasma, induced by laser, emits light without interaction with physical matter. The practical result of the ionization of air molecules is crackling, photon-emitting pockets of plasma (voxels) that can be arranged to create moving and interactive images. The technology was developed by researchers at the University of Tsukuba, Utsunomiya University, the Nagoya Institute of Technology and the University of Tokyo and first published in a scientific paper called ''Fairy Lights in Femtoseconds: Aerial and Volumetric Graphics Rendered by Focused Femtosecond Laser Combined with Computational Holographic Fields''. According to Ochiai et al., the main contribution of the paper was “the production of an in-air SLM-based [Spatial Light Modulator] laser-plasma graphics that enables physical contact and interaction by ultra-short pulse duration laser.” <ref name=”1”>Ochiai, Y., Kumagai, K., Hoshi, T., Rekimoto, J. Hasegawa, S. and Hayasaki, Y. Fairy lights in femtoseconds: aerial and volumetric graphics rendered by focused femtosecond laser combined with computational holographic fields. Arxiv</ref> | ||
There are two main methods to render graphics in air using a femtosecond laser. The first is holograms by spatial light modulation technology and the second is the scanning of a laser beam by a galvano mirror. Currently, the hologram size and workspace for these systems is 1cm3 and 5 cm3, respectively. Although these sizes are still too small for the practical applications proposed in the research paper, the study will allow for further development and design of laser-based aerial volumetric displays that could be scalable according to the optical devices and setup used. <ref name=”1”></ref> | There are two main methods to render graphics in air using a femtosecond laser. The first is holograms by spatial light modulation technology and the second is the scanning of a laser beam by a galvano mirror. Currently, the hologram size and workspace for these systems is 1cm3 and 5 cm3, respectively. Although these sizes are still too small for the practical applications proposed in the research paper, the study will allow for further development and design of laser-based aerial volumetric displays that could be scalable according to the optical devices and setup used. <ref name=”1”></ref> | ||
