Results 91 to 100 of about 556,769 (269)
Materials & Design, 2022 Recently, a kind simply structured metasurface made of binary phase modulated meta-unit shows extraordinary beam steering functionality especially in the reflective beam manipulation.
Kangyao Sun +6 more
doaj
Wavefront control of subcycle vortex pulses via carrier-envelope-phase tailoring
Light: Science & Applications, 2023 The carrier-envelope phase (CEP) of an ultrashort laser pulse is becoming more crucial to specify the temporal characteristic of the pulse’s electric field when the pulse duration becomes shorter and attains the subcycle regime; here, the pulse duration ...
Yu-Chieh Lin +2 more
doaj +1 more source
Focusing and Compression of Ultrashort Pulses through Scattering Media [PDF]
, 2010 Light scattering in inhomogeneous media induces wavefront distortions which pose an inherent limitation in many optical applications. Examples range from microscopy and nanosurgery to astronomy. In recent years, ongoing efforts have made the correction of spatial distortions possible by wavefront shaping techniques.
arxiv +1 more source
Highly efficient acoustic refractive metasurfaces by harnessing near field coupling [PDF]
Phys. Rev. Applied 12, 034021 (2019), 2019 Typical acoustic refractive metasurfaces governed by generalized Snell law require several types of subwavelength subunits to provide an extra phase gradient along the surface. This design strategy, however, has several kinds of drawback. For instance, the inevitable viscous loss brought out by the complex subwavelength subunits, and the negligence of ...
arxiv +1 more source
Angle‐ and Polarization‐Tolerant Metasurface Designs Based on the Aperiodic Tiling
Advanced Optical Materials, EarlyView.A novel aperiodic metasurface design is introduced to mitigate the inherent angle and polarization sensitivity of conventional metasurfaces. By employing a recently discovered aperiodic tiling approach, identical elliptical scatterers are arranged with systematic variations in their spacing and orientation, effectively minimizing spectral reflectance ...
Minyeul Lee, Suwan Jeon, Jonghwa Shin
wiley +1 more source
Nanoimprint of a 3D structure on an optical fiber for light wavefront manipulation [PDF]
Nanotechnology, 2016 7 pages, 3 ...
Keiko Munechika +9 more
openaire +4 more sources
Advanced Optical Materials, EarlyView.Laser‐induced graphene (LIG) on a colorless polyimide (CPI) substrate functions as both an electrical heater and a heat spreader, enabling rapid electro‐thermo‐optic actuation. The system achieves reflective beam scanning up to 2 kHz and diffractive beam steering with 0.5‐millidegree resolution and a 0.9 s response time, showcasing LIG‐CPI as a soft ...
Byunggi Kim +5 more
wiley +1 more source
Spatially Controlled Optical Vortex Generation Using Low‐Loss Antimony Telluride Metasurfaces
Advanced Photonics Research, EarlyView.The spatially varying vortex beams with the customizable propagation trajectory and the controllable topological charge evolution are demonstrated using the Sb2Te3‐based plasmonic metasurfaces. Benefiting from the dispersion‐free property of the Pancharatnam–Berry phase and the broadband response of polarization conversion efficiency of the nanobrick ...
Chengsen Yang +11 more
wiley +1 more source
Extraction of Inherent Amplitude Mode from a Light Beam
Advanced Photonics Research, EarlyView.Mode extraction is the inverse process of the double‐beam superposition principle in classical optics. While polarization mode extraction has been successfully demonstrated using an m‐order vector vortex beam, this article demonstrates the amplitude mode extraction of a light beam.
Zhiyang Xia +6 more
wiley +1 more source
Customizing optical patterns via feedback-based wavefront shaping [PDF]
arXiv, 2018 We show that customized optical patterns can be generated by employing feedback-based wavefront shaping without prior knowledge of the transmission matrix of optical systems. To control the spatial distribution of intensity within the target region, the overlap coefficient is employed as the key feedback signal for wavefront shaping, and the optimal ...
arxiv