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

Shuichi Toyouchi*, Hsuan Yin Wang, Hiroshi Masuhara

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationOptical Manipulation and Structured Materials Conference, OMC 2022
EditorsTakashige Omatsu
PublisherSPIE
ISBN (Electronic)9781510660656
DOIs
StatePublished - 2022
Event2022 Optical Manipulation and Structured Materials Conference, OMC 2022 - Yokohama, Japan
Duration: 18 Apr 202222 Apr 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12479
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2022 Optical Manipulation and Structured Materials Conference, OMC 2022
Country/TerritoryJapan
CityYokohama
Period18/04/2222/04/22

Keywords

  • multiple light scattering
  • optical assembling
  • Optical trapping
  • random laser
  • solution surface

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