Formation of twisted Au microstructures by optical vortex pulse irradiation

Tsubasa Fujimoto, Miki Kawamoto, Mitsuhiro Higashihata, Daisuke Nakamura, Hiroshi Ikenoue

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The formation of a twisted Au microstructure was demonstrated by irradiating the Au thin film with a focused optical vortex laser pulse. The theoretically calculated torque generated by optical radiation force of optical vortex was confirmed to be consistent with the twist direction of the experimental results. The microstructures formed by changing the focal position were experimentally investigated. Through simulations, it was shown that the spherical wave of the focused beam may affect the distribution of the optical radiation force at the defocus positions.

Original languageEnglish
Title of host publicationLaser-Based Micro- and Nanoprocessing XV
EditorsUdo Klotzbach, Akira Watanabe, Rainer Kling
ISBN (Electronic)9781510641839
Publication statusPublished - 2021
EventLaser-Based Micro- and Nanoprocessing XV 2021 - Virtual, Online, United States
Duration: Mar 6 2021Mar 11 2021

Publication series

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


ConferenceLaser-Based Micro- and Nanoprocessing XV 2021
Country/TerritoryUnited States
CityVirtual, Online

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Formation of twisted Au microstructures by optical vortex pulse irradiation'. Together they form a unique fingerprint.

Cite this