Coloured vortex beams with incoherent white light illumination

Functionalizing nanophotonic structures with 2D van der Waals materials

“…In contrast, metasurfaces are engineered optical scatterer arrays with a subwavelength dimension that can achieve powerful control over the fundamental attributes of light, 22,95,135–144 such as the phase, wave vector, amplitude, and frequency, 145–148 with widespread application such as meta-lenses, 149,150 high-efficiency holograms, 151,152 color display, 21,152–154 ultrathin cloaks, 155–157 healthcare sensors, 158–162 LiDAR, 163–165 functional meta-waveguides, 10,166–180 and nonlinear applications, 181–183 to name a few.…”

“…134 They can also be applied as optical cavities for light enhancement and light guiding structures by intentionally introducing point and line defects, respectively. 134 In contrast, metasurfaces are engineered optical scatterer arrays with a subwavelength dimension that can achieve powerful control over the fundamental attributes of light, 22,95,[135][136][137][138][139][140][141][142][143][144] such as the phase, wave vector, amplitude, and frequency, [145][146][147][148] with widespread application such as meta-lenses, 149,150 highefficiency holograms, 151,152 color display, 21,[152][153][154] ultrathin cloaks, [155][156][157] healthcare sensors, [158][159][160][161][162] LiDAR, [163][164][165] functional meta-waveguides, 10,[166][167][168][169][170][171][172][173]…”

“…The integration of functional materials into photonic structures is essential for building high-performance integrated optoelectronic systems 1 and an ideal platform for investigating nanophotonic phenomena. 2 The field of photonic integrated circuits [3][4][5] and nanophotonics 6,7 has achieved vibrant progress for optical communications, [8][9][10] artificial intelligence, [11][12][13] quantum technology, 14,15 imaging, [16][17][18] sensing, 19,20 and displays, [21][22][23] to name a few. However, issues such as insufficient multifunctionality and reconfigurability still await further attention.…”

Nanoprinted Diffractive Layer Integrated Vertical-Cavity Surface-Emitting Vortex Lasers with Scalable Topological Charge

“…l takes an infinite value in principle, and the vortex light fields with different l values are orthogonal to each other. , This unique infinitely orthogonal property makes the vortex beam a well-recognized way to greatly increase the information capacity. In the past decade, OAM-based multiplexing optical communication, − holography, − optical data storage, , optical encryption, , and quantum information have been widely investigated.…”

Selective high-order resonance in asymmetric plasmonic nanostructures stimulated by vortex beams

“…[1][2][3][4] In recent years, the OAM optical source technology has been receiving significant attention and is experiencing rapid development. [5][6][7][8][9][10][11][12][13][14][15] Spatially structured light carrying OAM allows for multiple distinct spatial light beams which can be used to transfer information or to exert forces on particles based on their OAM content. [16][17][18][19] This gives them unique properties for several interesting and useful applications such as optical tweezer or spanner, 20,21 OAM multiplexing, [22][23][24][25][26][27][28][29] and quantum information technology.…”