Study of chirality-dependent optical forces enabled by spin-orbital angular momentum conversion in the nonlinear optical trapping of VO2 particles

Publicly Offered Research

Project Area	Chiral materials science pioneered by the helicity of light
Project/Area Number	23H04571
Research Category	Grant-in-Aid for Transformative Research Areas (A)
Allocation Type	Single-year Grants
Review Section	Transformative Research Areas, Section (II)
Research Institution	Okinawa Institute of Science and Technology Graduate University (2024) Hokkaido University (2023)
Principal Investigator	Pin Christophe 沖縄科学技術大学院大学, 量子技術のための光・物質相互作用ユニット, スタッフサイエンティスト (50793767)
Project Period (FY)	2023-04-01 – 2025-03-31
Project Status	Granted (Fiscal Year 2024)
Budget Amount *help	¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000) Fiscal Year 2024: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000) Fiscal Year 2023: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords	chiral optical force / angular momentum / vanadium dioxide / nonlinear trapping / topology
Outline of Research at the Start	The orbital motion of optically trapped VO2 particles depends on by the spin and orbital angular momenta of the incident light. This work aims at elucidating the underlying spin-to-orbital momentum conversion mechanisms and demonstrate a new particle chirality-dependent optical sorting technique.