Results 11 to 20 of about 369 (124)

Polarization Strips in the Focus of a Generalized Poincaré Beam

Photonics
We analyze the tight focusing of a generalized Poincaré beam using a Richards–Wolf formalism. Conventional Poincaré beams are superpositions of two Laguerre–Gaussian beams with orthogonal polarization, while the generalized Poincaré beams are composed of
Victor V. Kotlyar, Alexey A. Kovalev, Alexey M. Telegin, Elena Sergeevna Kozlova   +3 more
doaj   +2 more sources

Direct Photocurrent Detection of Optical Vortex Based on the Orbital Photo Galvanic Effect: Progress, Challenge, and Perspective. [PDF]

Adv Sci (Weinh)
Direct orbital angular momentum (OAM) detection through the orbital photogalvanic effect offers a scalable route for integrated optoelectronics. This perspective evaluates symmetry‐driven material selection and demonstrates how electrode matrices enable the resolution of complex, mixed OAM modes.
Cheng J, Yang D, Wang W, Xu C, Fan Z, Sun D.   +5 more
europepmc   +2 more sources

Twisted Partially Coherent Full Poincaré Beams

, 2023
Full Poincaré (FP) beams that present all possible states of fully polarized light across their transverse section have received great attention in recent years. However, compared with huge successful design in coherent case, attempts in partial coherent
Yangjian Cai (3958538), Yan Huang (46805), Zhen-hua Li (3959225), Cong Tian (130440), Shijun Zhu (1314876), Shicheng Yuan (14600813), zhuoran kong (11038092)   +6 more
core   +1 more source

Controlling the Coverage of Full Poincaré Beams through Second-Harmonic Generation

, 2023
Ideal full Poincaré (FP) beams contain all possible polarization states on the surface of the Poincaré sphere and are readily created by linear optical techniques and, more recently, by nonlinear optical processes. An inherent limitation in the latter is
Buono, Wagner T., Ghosh, Anirban, Kumar, Subith, Samanta, G. K., Saripalli, Ravi K., Forbes, Andrew   +5 more
core   +1 more source

Arbitrary Orthogonal Polarization Decomposition and Routing With Complex Amplitude Modulation via Wheel-of-Fortune-Inspired Metasurfaces. [PDF]

Adv Sci (Weinh)
This work demonstrates a receiver‐transmitter‐integrated metasurface that decomposes an incident wave into orthogonal components and routes them into separate channels. Inspired by a “Wheel‐of‐Fortune” mechanism, it enables independent control over the amplitude, phase, and polarization of the transmitted wave.
Liu T, Dai C, Feng W, Wang Y, Liu W, Zhang W, Tian C, Hu G, Xu HX.   +8 more
europepmc   +2 more sources

Analytic treatment of nonparaxial full-Poincaré fields: singularity structure and trapping properties

, 2021
International audienceAn analytic extension to the nonparaxial regime of the full-Poincaré (FP) beams is presented. Instead of the stereographic mapping used in the paraxial case, these FP fields are defined in terms of a mapping from the polarization ...
Gutiérrez–cuevas, Rodrigo, Alonso, Miguel   +1 more
core   +1 more source

Polarization shaping of Poincaré beams by polariton oscillations [PDF]

, 2015
We propose theoretically and demonstrate experimentally the generation of light pulses whose polarization varies temporally to cover selected areas of the Poincaré sphere with both tunable swirling speed and total duration (1 ps and 10 ps, respectively ...
Bramati, Alberto, Valle Reboul, Elena del, Kavokin, Alexey V, del Valle, Elena, Shelykh, Ivan A., Kavokin, Alexey V., Liew, Timothy CH., Pervishko, Anastasiia A., de Giorgi, Milena, Giorgi, Milena de, Sanvitto, Daniele, Gigli, Giuseppe, Laussy, Fabrice P, Donati, Stefano, Colas, David, Valle, Elena del, Liew, Timothy C. H., Ballarini, Dario, Colas, D., Laussy, Fabrice P., Dominici, Lorenzo, Liew, Timothy Ch, Liew, Timothy Chi Hin, Pervishko, Anastasiia A, Shelykh, Ivan A   +24 more
core   +1 more source

Optical excitations of Skyrmions, knotted solitons, and defects in atoms [PDF]

, 2022
Analogies between non-trivial topologies of matter and light have inspired numerous studies, including defect formation in structured light and topological photonic band structures.
Parmee, Christopher, Parmee, Christopher D., Dennis, Mark R.; id_orcid, Dennis, Mark R., Ruostekoski, Janne   +4 more
core   +1 more source

Dynamic spin-polarization control of terahertz waves in magnetized plasmas [PDF]

Matter and Radiation at Extremes
Controlling terahertz (THz) polarization with high stability and tunability is essential for achieving further progress in ultrafast spectroscopy, structured-light manipulation, and quantum information processing.
Jie Cai, Yinren Shou, Zheng Gong, Han Wen, Liqi Han, Jinqing Yu, Xueqing Yan   +6 more
doaj   +1 more source

Field‐Programable Dynamics in a Soft Magnetic Actuator Enabling True Random Number Generation and Reservoir Computing

Advanced Intelligent Systems, EarlyView.
Complex dynamics, often avoided in electromechanical design, can enhance soft robotics. We develop durable magnetic soft actuators operating in tunable dynamic regimes, enabling random number generation, stochastic computing, and time‐series prediction.
Eduardo Sergio Oliveros‐Mata, Oleksandr V. Pylypovskyi, Eleonora Raimondo, Rico Illing, Yevhen Zabila, Lin Guo, Guannan Mu, Mónica Navarro López, Xu Wang, Georgios Tzortzinis, Angelos Filippatos, Gilbert Santiago Cañón Bermúdez, Francesca Garescì, Giovanni Finocchio, Denys Makarov   +14 more
wiley   +1 more source