Spatiotemporal differentiators generating optical vortices with transverse orbital angular momentum and detecting sharp change of pulse envelope
arXiv:2106.14420 · doi:10.1002/lpor.202100357
Abstract
As a new degree of freedom for optical manipulation, recently spatiotemporal optical vortices (STOVs) carrying transverse orbital angular momentums have been experimentally demonstrated with pulse shapers. Here a spatiotemporal differentiator is proposed to generate STOVs with transverse orbital angular momentum. In order to create phase singularity in the spatiotemporal domain, the spatiotemporal differentiator is designed by breaking spatial mirror symmetry. In contrast to pulse shapers, the device proposed here is a simple one-dimensional periodic nanostructure and thus it is much more compact. For a normal incident pulse, the differentiator generates a transmitted STOV pulse with transverse orbital angular momentum. Furthermore, the interference of the generated STOVs can be used to detect the sharp changes of pulse envelopes, in both spatial and temporal dimensions.
arXiv comment6 pages, 5 figures
References in corpus (17)
- Transverse and longitudinal angular momenta of light
- Photonic Cyclone: spatiotemporal optical vortex with controllable transverse orbital angular momentum
- Free-space quantum key distribution by rotation-invariant twisted photons
- Overcoming the Rayleigh Criterion Limit with Optical Vortices
- Generalized spatial differentiation from spin Hall effect of light
- Quantum Storage of Orbital Angular Momentum Entanglement in an Atomic Ensemble
- A Photonic Crystal Slab Laplace Differentiator
- Free-space propagation of spatio-temporal optical vortices (STOVs)
- High-index dielectric metasurfaces performing mathematical operations
- Spatio-temporal vortex beams and angular momentum
- Spatio-temporal optical vortices
- Spatiotemporal Vortex Pulses: Angular Momenta and Spin-Orbit Interaction
- Analog Computing Using Graphene-based Metalines
- Analog computing by Brewster effect
- First-order optical spatial differentiator based on a guided-mode resonant grating
- Optical phase mining by adjustable spatial differentiator
- Photonic orbital angular momentum with controllable orientation
Cited by in corpus (12)
- Roadmap on spatiotemporal light fields
- Orbital angular momentum of optical, acoustic, and quantum-mechanical spatiotemporal vortex pulses
- Observation of acoustic spatiotemporal vortices
- Antiferromagnetic spatial photonic Ising machine through optoelectronic correlation computing
- Generation of Spatiotemporal Vortex Pulses by Simple Diffractive Grating
- Topologically protected generation of spatiotemporal optical vortices with nonlocal spatial-mirror-symmetry-breaking metasurface
- Spatio-temporal optical vortices: principles of description and basic properties
- Single-shot 3D characterization the spatiotemporal optical vortex via a spatiotemporal wavefront sensor (STWFS)
- On-chip spatiotemporal optical vortex generation using an integrated metal-dielectric resonator
- Transverse orbital angular momentum and polarization entangled spatiotemporal structured light
- Wigner time delays and Goos-Hänchen shifts of 2D quantum vortices scattered by potential barriers
- Spatiotemporal Optical Vortices From All-Dielectric Bilayer Metagratings