Journal ArticleDOI
Bi-channel near- and far-field optical vortex generator based on a single plasmonic metasurface
Qiao Jiang,Yanjun Bao,Jing Li,Lifeng Tian,Tong Cui,Lin Sun,Bowen Du,Bowen Li,Benfeng Bai,Jia Wang,Hong-Bo Sun,Bo Shen,Han Zhang,Feng Lin,Xing Zhu,Zheyu Fang +15 more
Reads0
Chats0
Abstract:
With the recent development of the metasurface, generating an optical vortex in optical far or near fields is realized in various ways. However, to generate vortices in both the near and far fields simultaneously is still a challenge, although it has great potential in the future compact and versatile photonic system. Here, a bi-channel optical vortex generator in both the near and far fields is proposed and demonstrated within a single metasurface, where the surface plasmon vortex and the far-field optical vortex can be simultaneously generated under circularly polarized light. The ability of generating vortices with arbitrary topological charges is experimentally demonstrated, which agrees well with simulations. This approach provides great freedom to integrate different vortex generators in a single device and offers new opportunities for integrated optical communications, trapping, and other related fields.read more
Citations
More filters
Journal ArticleDOI
All‐Dielectric Fiber Meta‐Tip Enabling Vortex Generation and Beam Collimation for Optical Interconnect
Journal ArticleDOI
Switching the orbital angular momentum state of light with mode sorting assisted coherent laser array system.
Tianyue Hou,Qi Chang,Tao Yu,Jinhu Long,Hongxiang Chang,Pengfei Ma,Rongtao Su,Yanxing Ma,Pu Zhou +8 more
TL;DR: This work presents a method for flexibly switching the OAM state of light based on a coherent laser array system and allows one to achieve fast states switching of the combined OAM beam via programming the cost function of the algorithm.
Journal ArticleDOI
Generation of low-order Laguerre-Gaussian beams using hybrid-machined reflective spiral phase plates for intense laser-plasma interactions
Ji Yong Bae,Cheonha Jeon,Ki Hong Pae,Chul Min Kim,Hong Seung Kim,Ilkyu Han,Woo-Jong Yeo,Byeongjoon Jeong,Minwoo Jeon,Dong-Ho Lee,Dong Uk Kim,Sangwon Hyun,Hwan Hur,Kye-Sung Lee,Geon Hee Kim,Ki Soo Chang,Il Woo Choi,Chang Hee Nam,I Jong Kim +18 more
TL;DR: In this article, a series of procedures to obtain high-quality low-order Laguerre-Gaussian (LG) vortex beams from large-sized off-axis reflective spiral phase plates (ORSPPs) were presented, where geometric designs for various surface structures, electromagnetic wave simulations in the extra-large domain, hybrid-mechanical processing technique attempted newly, and experimental demonstrations are involved.
Journal ArticleDOI
Structuring orbital angular momentum beams by coherent laser array systems with tip-tilt optimization
TL;DR: In this paper, a tip-tilt wavefront optimized coherent laser array for tailoring orbital angular momentum (OAM) beams is presented, based on the paraxial diffraction theory and coordinate transforming method.
References
More filters
Journal ArticleDOI
Orbital angular momentum of light and the transformation of Laguerre-Gaussian laser modes.
TL;DR: Laser light with a Laguerre-Gaussian amplitude distribution is found to have a well-defined orbital angular momentum and an astigmatic optical system may be used to transform a high-order LaguERre- Gaussian mode into aHigh-order Hermite-Gaussia mode reversibly.
Journal ArticleDOI
Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction
Nanfang Yu,Patrice Genevet,Patrice Genevet,Mikhail A. Kats,Francesco Aieta,Francesco Aieta,Jean-Philippe Tetienne,Jean-Philippe Tetienne,Federico Capasso,Zeno Gaburro,Zeno Gaburro +10 more
TL;DR: In this article, a two-dimensional array of optical resonators with spatially varying phase response and subwavelength separation can imprint phase discontinuities on propagating light as it traverses the interface between two media.
Journal ArticleDOI
Flat Optics With Designer Metasurfaces
Nanfang Yu,Federico Capasso +1 more
TL;DR: This Review focuses on recent developments on flat, ultrathin optical components dubbed 'metasurfaces' that produce abrupt changes over the scale of the free-space wavelength in the phase, amplitude and/or polarization of a light beam.
Journal ArticleDOI
Terabit free-space data transmission employing orbital angular momentum multiplexing
Jian Wang,Jian Wang,Jeng-Yuan Yang,Irfan Fazal,Nisar Ahmed,Yan Yan,Hao Huang,Yongxiong Ren,Yang Yue,S. Dolinar,Moshe Tur,Alan E. Willner +11 more
TL;DR: In this paper, the authors demonstrate the ability to multiplex and transfer data between twisted beams of light with different amounts of orbital angular momentum, which provides new opportunities for increasing the data capacity of free-space optical communications links.
Journal ArticleDOI
Planar Photonics with Metasurfaces
TL;DR: Progress in the optics of metasurfaces is reviewed and promising applications for surface-confined planar photonics components are discussed and the studies of new, low-loss, tunable plasmonic materials—such as transparent conducting oxides and intermetallics—that can be used as building blocks for metAsurfaces will complement the exploration of smart designs and advanced switching capabilities.