Article
Optics
Zirui Qin, Lingtong Zhang, Runhao Zhang, Pei Zhang, Rubin Qi, Qingfang Zhang, Linjiao Ren, Liying Jiang
Summary: In this study, the effect of incident polarization on the spin splitting of the photonic spin Hall effect was investigated. The relationship between incident polarization and the four types of spin splitting was found, and it was discovered that in-plane angular and spatial shifts are significantly enhanced near the critical angle. These findings contribute to a deeper understanding of the photonic spin Hall effect and provide new ideas and methods for precision metrology, photonic manipulation, and photonic device fabrication.
Article
Optics
Haoyuan Song, Xiangguang Wang, Shaopeng Hao, Shufang Fu, Xuan-Zhang Wang
Summary: We theoretically study the spin-splitting of reflected linearly-polarized vortex beam on the hyperbolic-crystal surface. We find that the in-plane or out-plane spin-splitting distance is composed of the intrinsic orbit angular momentum (IOAM) contribution and another part not related to the optical vortex. The in-plane and out-plane spin-splitting have different responses to the IOAM. The results have potential applications in infrared radiation manipulation and infrared optical detection.
OPTICS COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Zhi-Wei Cui, Shen-Yan Guo, Yuan-Fei Hui, Ju Wang, Yi-Ping Han
Summary: This study investigates the local dynamical characteristics of Bessel beams reflected from an air-glass interface near the Brewster angle using analytical and numerical methods. Explicit expressions for the field components of the reflected Bessel beams are derived under paraxial approximation. Numerical simulations show that properties of energy, momentum, spin, and orbital angular momentum of Bessel beams near Brewster angle incidence are significantly influenced by their topological charge, half-cone angle, and polarization state.
Article
Optics
Ata Ur Rahman Khalid, Fu Feng, Muhammad Ismail Khan, Xiaocong Yuan, Michael Geoffrey Somekh
Summary: Metasurfaces-based spin tunable beam splitter is proposed and numerically realized in this study, which splits the incoming circularly polarized beam into two different directions and tunes the splitting angles by switching the handedness of incident light polarization. The proposed design approach has potential applications in optical communication, multiplexing, and imaging.
Article
Optics
DongXue Liu, ChengKang Liang, DongMei Deng, GuangHui Wang, Li Zhang
Summary: We systematically study the spin Hall effect of light in chiral PT-symmetric metamaterials and discover asymmetric splitting caused by crosspolarization and intrinsic orbital angular momentum. We also observe spin Hall shift peaks. Additionally, altering multiple parameters can influence the spin splitting and displacement peaks.
Article
Optics
Upasana Baishya, Nitish Kumar, Nirmal K. Viswanathan
Summary: This study presents simulation and experimental results on measuring the spin Hall effect of light (SHEL) at approximately 0.12 degrees away from normal incidence. The measurement is achieved by detecting the transverse spin-shift caused by polarization variations in the reflected beam. This research opens up possibilities for applications in material characterization using retro-reflection geometry.
Article
Materials Science, Multidisciplinary
Yan Xu, Yuting Xu, Jie Sun, Yunkai Mao, Zhen Chai, Jianli Li
Summary: A new spin-selective beam-splitting metasurface-based technique for atomic spin detection is proposed in this study. The experimental results show that the fabricated metasurface supports the beam splitting focusing of circular polarized light. Compared with the traditional beam splitter, this method can reduce the probe's optical path volume by at least 80% and enhance the integration of atomic sensors.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Optics
Jose J. Gil, Andreas Norrman, Ari T. Friberg, Tero Setala
Summary: We develop a theoretical foundation for the spin angular momentum (SAM) of random, statistically stationary polychromatic light fields within the framework of classical optical coherence theory. The formulation is valid for fields of arbitrary frequency bandwidth and dimensionality. Both temporal and spectral representations are given, and we further elucidate the relationship between the SAM and the polarization characteristics of such fields as compared to monochromatic light. The special cases of quasimonochromatic light and planar fields are analyzed separately. Generally, our paper offers deeper insights into the SAM and polarization structures as well as their interlinked connections in random stationary light, which could be beneficial in exploiting SAM in stochastic optical near fields and tightly focused beams exhibiting complex polarization character.
Article
Physics, Multidisciplinary
Liang Fang, Hongya Wang, Yize Liang, Han Cao, Jian Wang
Summary: This study demonstrates the spin-orbit mapping of light in a few-mode fiber, showing high efficiency, large bandwidth, availability for short pulses, and scalability to high-order OAM states.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Analytical
Alexey A. Kovalev, Victor V. Kotlyar, Sergey S. Stafeev
Summary: We investigated a paraxial vectorial Gaussian beam with multiple polarization singularities residing on a circle. Despite initial linear polarization, on propagation in space, alternating areas with a spin angular momentum (SAM) density of opposite sign are generated, manifesting the spin Hall effect. We derived that maximal SAM magnitude is on a certain-radius circle in each transverse plane and obtained an approximate expression for the distance to the transverse plane with the maximal SAM density. Furthermore, we defined the singularities circle radius, at which the achievable SAM density is maximal. The obtained results have potential applications in designing micromachines with optically driven elements.
Article
Optics
Sixian Li, Zhihao Chen, Linguo Xie, Qiyong Liao, Xinxing Zhou, Yu Chen, Xiao Lin
Summary: The beam waist is a crucial parameter in determining the transmission characteristics of a Gaussian beam, and traditional measurement methods are complex and error-prone. This study proposes an effective method using in-plane spin splitting (IPSS) generated by the photonic spin Hall effect to accurately estimate the beam waist, with significant improvements in measurement precision through IPSS amplification.
Article
Physics, Multidisciplinary
Muhammad Tariq, Amir Hamza, Muhammad Hammad, Bakht Amin Bacha, SaeedUllah Jan, Akhlaq Ahmad
Summary: This study investigates the manipulation and control of spin density and spin angular momentum of a probe field through control fields. The variation of spin density and distribution of the probe field can be controlled and modified by controlling the angle between interfering waves and adjusting the Rabi frequency of the control field. The results of this study are significant for the development of unidirectional optical interfaces and the understanding of the quantum spin Hall effect of light beams.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Engineering, Multidisciplinary
Spyridon Koutsoumpos, Panagiotis Giannios, Konstantinos Moutzouris
Summary: This study proposes a simple method to determine the complex optical constants of attenuating samples by measuring two characteristic angles of light at the interface. These two angles, namely the critical angle of attenuated total reflection and the pseudo-Brewster angle, can be accurately measured using common laser refractometers.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2023)
Article
Optics
Yiqi Fang, Meng Han, Peipei Ge, Zhenning Guo, Xiaoyang Yu, Yongkai Deng, Chengyin Wu, Qihuang Gong, Yunquan Liu
Summary: This study investigates the conversion of the photon's orbital angular momentum into spin under strong magnetic field, and verifies this conversion through experiments. The findings have implications for controlling photoelectron holography and coherent extreme-ultraviolet radiations.
Article
Energy & Fuels
M. D. Lobato, F. Gamez, J. M. Pedrosa
Summary: This study provides a comprehensive experimental approach and structural analysis to reveal a two-step aggregation process of asphaltene at interfaces, showing that different aggregation states result in different intramolecular cohesion forces and interaction patterns.
Review
Physics, Applied
Xiaohui Ling, Zan Zhang, Shizhen Chen, Xinxing Zhou, Hailu Luo
Summary: Optical beam shifts, such as Goos-Hanchen shift and spin-Hall shift, are prevalent in basic optical processes and can be used to explore and characterize 2D atomic crystals. They have great potential for applications in precision metrology and sensing due to their sensitivity to material parameter changes.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Optics
Shuai Lin, Jiahao Hong, Zhihao Chen, Yu Chen, Xinxing Zhou
Summary: In this study, the potential of the photonic spin Hall effect (SHE) in precision metrology is explored. A weak measurement method is proposed and experimentally demonstrated for arbitrary linear polarization angle detection.
Article
Optics
Linguo Xie, Yu He, Fubin Yang, Youquan Dan, Xinxing Zhou, Zhiyou Zhang
Summary: In this study, a phase compensation scheme is proposed and experimentally verified to achieve symmetric spin splitting in photonic spin Hall effect. The research reveals that the transverse shift of the total barycenter in the reflected field remains unchanged, whether or not phase compensation is applied.
Article
Physics, Multidisciplinary
Jiahao Hong, Zhihao Chen, Shuai Lin, Yu Chen, Xinxing Zhou
Summary: The flexible enhancement of photonic spin Hall effect is achieved by using selective Brewster angle in an anisotropic metamaterial. This method allows the spin-dependent transverse shift to be enhanced at arbitrary incident angles, and enables information conversion through binary encoding system.
ANNALEN DER PHYSIK
(2023)
Article
Optics
Lijuan Sheng, Xinxing Zhou, Yuhan Zhong, Xinyan Zhang, Yu Chen, Zhiyou Zhang, Hongsheng Chen, Xiao Lin
Summary: The photonic spin Hall effect allows for quantifying the interaction between light and spin-orbit, enabling applications in precise metrology. In this effect, the light beam experiences a spin-dependent transverse shift. It is found that, unlike the reflection/transmission process, the transverse shift for transmitted light is always zero and independent of polarization, regardless of the incident angle. This is due to the complete suppression of conversion between the spin and orbital angular momenta of light during the transmission process. Similar polarization-independent photonic spin Hall effect is observed for reflected light.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Xiaohui Ling, Zan Zhang, Zhiping Dai, Zhiteng Wang, Hailu Luo, Lei Zhou
Summary: The physical origin of the photonic spin-Hall effect (PSHE) at optical interfaces is explored through studying the scatterings of circularly polarized beams obliquely incident on a series of junctions. The PSHE is determined by the interplay between the spin-redirection Berry (SRB) phase and the Pancharatnam-Berry (PB) phase. Shrinking the interfacial region can change the PSHE from SRB-dominated to PB-dominated.
LASER & PHOTONICS REVIEWS
(2023)
Editorial Material
Physics, Multidisciplinary
Shiyao Fu, Hailu Luo, Carmelo Rosales-Guzman
FRONTIERS IN PHYSICS
(2023)
Letter
Optics
Yan Wang, Qiang Yang, Yichang Shou, Hailu Luo
Summary: Mathematically, any function can be expressed as the operation form of another function. In this study, the concept is applied to an optical system for generating structured light. By representing mathematical functions as optical field distributions and using optical analog computations, different structured light fields can be generated from input optical fields. The scheme takes advantage of the Pancharatnam-Berry phase for broadband performance. The work demonstrates a flexible method for generating broadband structured light, with potential applications in high-resolution microscopy and quantum computation.
Editorial Material
Engineering, Electrical & Electronic
Xinxing Zhou, Jacob Khurgin, Shenhe Fu
IEEE PHOTONICS JOURNAL
(2023)
Article
Optics
Kuiming Zeng, Shanshan He, Xianping Wang, Hailu Luo
Summary: A compact optical integration of dynamic phase and geometric phase is proposed to generate arbitrary vector vortex beams on a hybrid-order Poincare sphere. By applying two different technologies, dynamic and geometric phase elements are integrated into a single glass plate to simultaneously modulate the phase and polarization of light. The vector polarization is realized by the metasurface structure, while the vortex phase is generated by the spiral phase plate. Potential applications in future integrated optical devices are anticipated due to its high transmission efficiency and conversion efficiency.
Article
Optics
Qiuying Li, Hua Yang, Yan Wang, Yichang Shou, Shuoqing Liu, Hailu Luo
Summary: This study proposes an optical method for surface topography detection of low-contrast phase objects, which achieves spatial differential operation by constructing reflected light paths. The method is demonstrated to be universal and accurate, and applicable to both opaque and transparent pure phase objects.
Article
Optics
Wenshuai Zhang, Yongsheng Wang, Dingyu Xu, Hailu Luo
Summary: This study investigates the spin-orbit interaction of a vortex beam reflected on twisted few-layer hyperbolic metasurfaces. The spatial Imbert-Fedorov (IF) shift and photonic spin Hall effect (PSHE) shift are found to have symmetrical relationships with the twist angle and are influenced by the topological charge and the polarization state of the incident beam. These findings provide new insights for further investigations of twisted light and twisted metasurfaces.
Article
Engineering, Electrical & Electronic
Shuaijie Yuan, Jin Yang, Yong Wang, Yu Chen, Xinxing Zhou
Summary: In this work, a highly sensitive temperature sensor based on photonic spin Hall effect (PSHE) is proposed. It is found that, by involving the liquid crystal (LC) material, the PSHE exhibits high sensitivity to temperature perturbations near the Brewster and critical angles. The phase transition from liquid crystal state to liquid state leads to a transition of the sensitivity of the temperature sensor and provides an effective method for manipulating the spin-orbit interaction.
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
(2023)
Article
Optics
Yongsheng Wang, Wenshuai Zhang, Shizhen Chen, Shuangchun Wen, Hailu Luo
Summary: In this study, a multiple weak-value model is proposed in quantum weak measurement to improve measurement accuracy by introducing modified preselection states, particularly for broad-spectrum light sources.
Review
Nanoscience & Nanotechnology
Shanshan He, Ruisi Wang, Hailu Luo
Summary: Computing metasurfaces are two-dimensional artificial nanostructures that can perform mathematical operations on the input electromagnetic field. They have exceptional abilities for all-optical image processing and have promising applications in edge-enhanced imaging, microscopy imaging, and quantum imaging.
