[13a-B415-1~5] 3.6 Ultrashort-pulse and high-intensity lasers

[13a-B415-3] Hyperspectral Imaging of Optical Vortices using Dual-comb Spectroscopy

〇Akifumi Asahara^1,2, Takuto Adachi^1,2, Seishiro Akiyama¹, Kaoru Minoshima^1,2 (1.UEC, 2.JST,ERATO MINOSHIMA IOS)

Keywords:Optical comb, Optical vortex, Single-pixel imaging

Until now, we have proposed a concept of "optical-vortex-comb," which realizes precise spatiotemporal phase control by combining optical comb and optical vortex. In this study, we applied a measurement method combining “dual-comb spectroscopy” and “single-pixel imaging” to characterization of optical vortex, and demonstrated hyper-spectral imaging of optical vortex light-wave. This result is expected to develop as a measurement technology in a wide range of fields such as chiral material study and optical communication using transverse optical modes.