Optically evolved assembling of polystyrene microparticles at dye solution surface: application toward an optically reconfigurable random laser

Shuichi Toyouchi; Hsuan-Yin Wang; Hiroshi Masuhara

doi:10.1117/12.2659062

8 December 2022 Optically evolved assembling of polystyrene microparticles at dye solution surface: application toward an optically reconfigurable random laser

Shuichi Toyouchi, Hsuan-Yin Wang, Hiroshi Masuhara

Author Affiliations +

Proceedings Volume 12479, Optical Manipulation and Structured Materials Conference (OMC 2022); 124790V (2022) https://doi.org/10.1117/12.2659062
Event: Optics and Photonics International Congress, 2022, Yokohama, Japan

Abstract

In the present work, we study optical trapping of two kinds of trapping targets together, 20 μm and 1 μm PS MPs, at the solution surface. The resulting assembly has a unique structure, that 1 μm PS MPs form a belt surrounding to a single 20 μm PS MP as the body, and 3-dimensionally grows more than 50 μm in diameter even though the trapping laser focus size is only 1 μm. We further demonstrate that the optically prepared light scattering assembly can serve as a unique reconfigurable random lasing medium. As the assembly is prepared exclusively where and when trapping laser is irradiated, our study will offer a new tool for studying optically reconfigurable and tunable disordered photonics.

Citation Download Citation

Shuichi Toyouchi, Hsuan-Yin Wang, and Hiroshi Masuhara "Optically evolved assembling of polystyrene microparticles at dye solution surface: application toward an optically reconfigurable random laser", Proc. SPIE 12479, Optical Manipulation and Structured Materials Conference (OMC 2022), 124790V (8 December 2022); https://doi.org/10.1117/12.2659062

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