title: Optical vortex arrays from smectic liquid crystals.
abstract: We demonstrate large-area, closely-packed optical vortex arrays using self-assembled defects in smectic liquid crystals. Self-assembled smectic liquid crystals in a three-dimensional torus structure are called focal conic domains. Each FCD, having a micro-scale feature size, produces an optical vortex with consistent topological charge of 2. The spiral profile in the interferometry confirms the formation of an optical vortex, which is predicted by Jones matrix calculations.
authors.forename: Baeksik
authors.initials: B
authors.lastname: Son
authors.forename: Sejeong
authors.initials: S
authors.lastname: Kim
authors.forename: Yun Ho
authors.initials: YH
authors.lastname: Kim
authors.forename: K
authors.initials: K
authors.lastname: Käläntär
authors.forename: Hwi-Min
authors.initials: HM
authors.lastname: Kim
authors.forename: Hyeon-Su
authors.initials: HS
authors.lastname: Jeong
authors.forename: Siyoung Q
authors.initials: SQ
authors.lastname: Choi
authors.forename: Jonghwa
authors.initials: J
authors.lastname: Shin
authors.forename: Hee-Tae
authors.initials: HT
authors.lastname: Jung
authors.forename: Yong-Hee
authors.initials: YH
authors.lastname: Lee