Optical Vortex: Fundamentals and Applications
A special issue of Photonics (ISSN 2304-6732).
Deadline for manuscript submissions: 31 July 2024 | Viewed by 151
Special Issue Editor
Special Issue Information
Dear Colleagues,
An optical vortex refers to the spatial modes of light that are featured with axial-phase singularity. This topological structure arises from its helicoidal phase front with topological charge ℓ around the phase singularity. It is also referred to as the optical angular momentum (OAM) of ℓћ, with respect to the spin angular momentum (SAM) (±ћ per photon) associated with the photon polarization. Light fields carrying OAM have opened new perspectives in the optical research realm due to various fascinating attributes, such as the optical tweezer, optical microscopy and metrology, quantum communication, lasing, etc. The novel OV properties characterized by high-order Gaussian beam modes, such as the Laguerre–Gaussian (LG) modes, Hermite–Gaussian (HG) modes, and Ince–Gaussian (IG) modes, also spawn tremendous research interest in the high-order integer/fractional OAM and its orthogonal space spans. Vortex beam generation techniques have also been developed thoroughly for the past three decades. Approaches such as spiral-phase plates, computer-generated holograms, phase-coded metaatoms, SAM–OAM coupling based on the Pancharatnam–Berry (PB) phase, and so on are proposed to realize the spiral topology for spatial light or on-chip integrated devices.
We are pleased to invite you to contribute to this Special Issue on the fundamentals and applications of an optical vortex.
Dr. Yuhao Wu
Guest Editor
Manuscript Submission Information
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Keywords
- spin-orbit coupling and optical angular momentum (OAM)
- Laguerre–Gaussian (LG) modes and fractional-order OAM
- geometric phases and topological photonics
- OV multiplexity and multicasting
- integrated on-chip OAM lasing
- optical trapping and rotating
- quantum communication and information
- optical microscopy and metrology
