|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Optical superoscillatory waves without side lobes along a symmetric cut显示文摘Optical superoscillation refers to an intriguing phenomenon of a wave packet that can oscillate locally faster than its highest Fourier component,which potentially produces an extremely localized wave in the far field.It provides an alternative way to overcome the diffraction limit,hence improving the resolution of an optical microscopy system.However,the optical superoscillatory waves are inevitably accompanied by strong side lobes,which limits their fields of view and,hence,potential applications.Here,we report both experimentally and theoretically a new superoscillatory wave form,which not only produces significant feature size down to deep subwavelength,but also completely eliminates side lobes in a particular dimension.We demonstrate a new mechanism for achieving such a wave form based on a pair of moonlike sharp-edge apertures.The resultant superoscillatory wave exhibits Bessel-like forms,hence allowing long-distance propagation of subwavelength structures.The result facilitates the study of optical superoscillation and on a fundamental level eliminates the compromise between the superoscillatory feature size and the field of view. | Yanwen Hu Shiwang Wang Junhui Jia Shenhe Fu Hao Yin Zhen Li Zhenqiang Chen | 2021 | Advanced Photonics2021，3，4： | 3 |
| 2 | Optimized weak measurement of orbital angular momentum-induced beam shifts in optical reflection显示文摘Tiny but universal beam shifts occur when a polarized light beam is reflected upon a planar interface.Although the beam shifts of Gaussian beams have been measured by the weak measurement technique, the weak measurement for orbital angular momentum(OAM)-induced spatial shifts of vortex beams is still missing.Here, by elaborately choosing the preselection and postselection states, the tiny OAM-induced Goos–H?nchen and Imbert–Fedorov shifts are amplified at an air–prism interface. The maximum shifts along directions both parallel and perpendicular to the incident plane are theoretically predicted and experimentally verified with optimal preselection and postselection states. These maximum shifts can be used to determine the OAM of vortex beams. | Wenjin Long Jintao Pan Xinyi Guo Xiaohe Liu Haolin Lin Huadan Zheng Jianhui Yu Heyuan Guan Huihui Lu Yongchun Zhong Shenhe Fu Li Zhang Wenguo Zhu Zhe Chen | 2019 | Photonics Research2019，7，11： | 1 |
| 3 | Higher-order optical rabi oscillations显示文摘Rabi oscillations express a phenomenon of periodic conversion between two wave states in a coupled system.The finding of Rabi oscillation has led to important applications in many different disciplines.Despite great progress,it is still unknown whether the Rabi oscillating state can be excited in the framework of the higher-order vector vortex regime.Here,we demonstrate in theory that the higher-order vector vortex light beams can be Rabi oscillating during evolution in an optical coupling system.This new classical oscillating state of light is characterized by a topologically shaped wavefront and coupled with spatially varying polarization.The vector vortex state exhibits a harmonic oscillatory property in the resonant and nonresonant conditions but differs greatly in Rabi oscillating frequencies.During Rabi oscillation,the complex state maintains its topology and intensity profile,while its intrinsic polarization pattern varies adiabatically in a periodic manner.We present an interpretation of the Rabi oscillation of the higher-order wave states in terms of the coupled-mode theory.Furthermore,we reveal a symmetry-protected transition between two Rabi oscillating modes,driven by a slowly varying phase mismatch.This Rabi transition has not been reported in either quantum mechanics or any other physical setting.This work advances the research of Rabi oscillation into the higher-order regime,and it may lead to novel applications in classical and quantum optics. | Guohua Liu Shenhe Fu Siqi Zhu Hao Yin Zhen Li Zhenqiang Chen | 2023 | Fundamental Research2023，3，6： | 0 |
| 4 | Spin-orbit Rabi oscillations in optically synthesized magnetic fields显示文摘Rabi oscillation has been proven to be one of the cornerstones of quantum mechanics,triggering substantial investigations in different disciplines and various important applications both in the classical and quantum regimes.So far,two independent classes of wave states in the Rabi oscillations have been revealed as spin waves and orbital waves,while a Rabi wave state simultaneously merging the spin and orbital angular momentum has remained elusive.Here we report on the experimental and theoretical observation and control of spin–orbit-coupled Rabi oscillations in the higher-order regime of light.We constitute a pseudo spin-1/2 formalism and optically synthesize a magnetization vector through light-crystal interaction.We observe simultaneous oscillations of these ingredients in weak and strong coupling regimes,which are effectively controlled by a beam-dependent synthetic magnetic field.We introduce an electrically tunable platform,allowing fine control of transition between different oscillatory modes,resulting in an emission of orbital-angular-momentum beams with tunable topological structures.Our results constitute a general framework to explore spin–orbit couplings in the higher-order regime,offering routes to manipulating the spin and orbital angular momentum in three and four dimensions.The close analogy with the Pauli equation in quantum mechanics,nonlinear optics,etc.,implies that the demonstrated concept can be readily generalized to different disciplines. | Guohua Liu Xiliang Zhang Xin Zhang Yanwen Hu Zhen Li Zhenqiang Chen Shenhe Fu | 2023 | Light(Science & Applications)2023，12，9： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员