Article
Physics, Applied
Tingting Tang, Yujie Tang, Lei Bi, Tongtong Kang, Xiao Liang, Jun Qin, Jie Li, Li Luo, Chaoyang Li
Summary: This study utilizes the photonic spin Hall effect and quantum weak measurement to achieve real-time detection and highly sensitive analysis of the phase transition process of VO2 films. It does not involve mechanical adjustment and provides high measurement resolution and visualization capability.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Yougang Ke, Yongfeng Bian, Qiang Tang, Jibo Tian, Linzhou Zeng, Yu Chen, Xinxing Zhou
Summary: In this paper, the authors introduce a novel three-dimensional rotational photonic spin Hall effect (PSHE) and demonstrate how to control the rotation angle of the splitting patterns by adjusting the rotation angle of metasurfaces. They also show that the number of lobes in the splitting patterns can be independently controlled by introducing a dynamic phase. These findings enable active manipulation of spin photons in multiple dimensions and may have potential applications in optical microscopy, among other areas.
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)
Article
Optics
Ting Lei, Changyu Zhou, Dawei Wang, Zhenwei Xie, Boyuan Cai, Shecheng Gao, Youpeng Xie, Luping Du, Zhaohui Li, Anatoly Zayats, Xiaocong Yuan
Summary: A chip-integrated nanodisk device is demonstrated for high-speed coherent optical signal detection based on spin-orbit coupling in silicon photonics circuitry. The device can extract phase information through polarization measurements, enabling coherent signal recovery at multiple wavelengths. This technology offers low-cost and small footprint advantages in high-speed coherent optical communication applications.
LASER & PHOTONICS REVIEWS
(2022)
Article
Physics, Applied
Ruisi Wang, Shanshan He, Hailu Luo
Summary: The visualization of transparent phase objects is crucial in biological research, but it is challenging due to the weak scattering and absorption. In this study, a differential microscopy based on the photonic spin Hall effect is proposed, which can achieve high-contrast imaging of pure phase objects. The phase distribution can be reconstructed by biased imaging, providing potential for high-resolution reconstruction and quantitative analysis of phase images.
PHYSICAL REVIEW APPLIED
(2022)
Article
Materials Science, Multidisciplinary
Zhihao Chen, Yu Chen, Yaodong Wu, Xinxing Zhou, Handong Sun, Tony Low, Hongsheng Chen, Xiao Lin
Summary: The photonic spin Hall effect, which is a manifestation of the spin-orbit interaction of light, can be measured through the transverse shift of photons with opposite spins. However, current methods to generate a large spin Hall effect have limitations, occurring only within a narrow angle range. This study proposes a universal scheme to achieve a wide-angle giant photonic spin Hall effect by utilizing the interface between free space and uniaxial epsilon-near-zero media.
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
Monu Nath Baitha, Kyoungsik Kim
Summary: In this study, the polarization-independent photonic spin Hall effect (PSHE) is achieved by manipulating the spin-orbit coupling of light. The thickness of the thin film can be adjusted to control the device's characteristic size. This finding will contribute to the development of polarization-independent nano-photonics devices.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Israr Ahmed, Mohamed Elsherif, Seongjun Park, Ali K. Yetisen, Haider Butt
Summary: This study developed rapid, reliable, and reusable alcohol sensors based on hydrogel-based fiber optic probes. The sensors were fabricated using a simple, rapid, and facile process by imprinting Aztec microstructures onto alcohol-sensitive hydrogels. The sensors showed real-time sensing capability towards various concentrations of ethanol, isopropanol, methanol, and dimethyl sulfoxide. The developed optical fiber sensors exhibited fast response time, high sensitivity, and low limit of detection, making them suitable for remote and real-time alcohol sensing in multiple industries.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Chengkang Liang, Dongxue Liu, Rao Liu, Dongmei Deng, Guanghui Wang
Summary: The photonic spin Hall effect is proposed for precision metrology and quantum information processing. It is accompanied by the Goos-Hanchen and Imbert-Fedorov effects. By manipulating the chirality, transverse and longitudinal shifts can be achieved simultaneously.
Article
Engineering, Electrical & Electronic
Nipun Sharma, Arun Kumar Sakthivel, Subbiah Alwarrapan, Ankur Gupta, Ahmed S. Razeen, Dharmraj Subhash Kotekar Patil, Sudhiranjan Tripathy, Mahesh Kumar
Summary: The quick and easy monitoring of heavy metals in drinking water is of utmost importance due to their harmful effects on human health. In this study, a GaN-based HEMT sensor was fabricated and used to detect trace Pb2+ ions in water. The sensor showed a sensitivity of 0.46 mu A/ppb with a detection limit of 0.32 ppb, which is below international standards. Real-time measurements on lake water were also performed using this sensor, demonstrating its fast and ultrasensitive detection capabilities. This work serves as a proof-of-concept for the development of heavy metal ion sensors.
IEEE SENSORS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Yang Shen, Guanchu Wang, Qiushun Zou, Xiaoyi She, Da Cai, Chongjun Jin
Summary: This study introduces a high-performance relative humidity sensor driven by a plasmonic-photonic hybrid system, which offers ultrahigh sensitivity and accuracy in humidity detection. The sensor shows great potential in medical diagnostics and optical modulation applications, demonstrating its versatility and reliability in various fields.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Physics, Applied
Subrat Sahu, Triranjita Srivastava, Rajan Jha
Summary: The photonic spin Hall effect (PSHE) in the Plexcitonic system is analyzed in this paper, where the signature of Plexciton is studied by implanting an organic semiconductor layer over the plasmon active metal. The high sensitivity of the transverse shift to alterations in the environmental refractive indices makes it suitable for applications as a highly sensitive PSHE-based refractometer.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Axin He, Yi Xu, Baowei Gao, Tongzhou Zhang, Jiasen Zhang
Summary: In this study, broadband subwavelength photonic spin Hall devices (PSHDs) based on L-shaped optical slot antennas were demonstrated, showing small size, broadband response, and flexible design.
LASER & PHOTONICS REVIEWS
(2021)
Article
Physics, Multidisciplinary
Wenguo Zhu, Huadan Zheng, Yongchun Zhong, Jianhui Yu, Zhe Chen
Summary: This research demonstrates a novel wave-vector-varying PB phase that naturally arises in transmission and reflection processes for paraxial beams with small incident angles. This new photonic spin Hall effect can address the contradiction between spin separation and energy efficiency in the conventional PSHE.
PHYSICAL REVIEW LETTERS
(2021)
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
Yunpeng Wu, Shuoqing Liu, Shizhen Chen, Hailu Luo, Shuangchun Wen
Summary: This paper investigates two models for describing the behavior of light in graphene and proposes a method to detect the small difference between these models using the photonic spin Hall effect and weak-value amplification. Experimental results show that the zero-thickness model provides a more accurate description for the interaction between light and monolayer or bilayer graphene, while the slab model should be used for more than two layers.
Article
Physics, Multidisciplinary
Jiawei Liu, Qiang Yang, Shizhen Chen, Zhicheng Xiao, Shuangchun Wen, Hailu Luo
Summary: By solving Maxwell's equations, we discovered a relationship between the cross-polarized component and the copolarized component of the dipole scattering field. This discovery has allowed for the development of a nondestructive imaging technique that can visualize the structure of pure-phase objects at low photon levels without damaging living cells. By using polarization entanglement, the switch between dark-field imaging and bright-field imaging can be remotely controlled.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Applied
Dingyu Xu, Hua Yang, Wenhao Xu, Wenshuai Zhang, Kuiming Zeng, Hailu Luo
Summary: This paper proposes a method for inverse design of Pancharatnam-Berry phase metasurfaces based on specified optical computing, which is then applied to optical analog computing and all-optical image edge detection.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Yan Wang, Qiang Yang, Shanshan He, Ruisi Wang, Hailu Luo
Summary: Differential interference contrast (DIC) microscopy based on computing metasurfaces is proposed for observing transparent phase samples with high contrast and potential applications in biological imaging.
Article
Multidisciplinary Sciences
Ruisi Wang, Shanshan He, Shizhen Chen, Weixing Shu, Shuangchun Wen, Hailu Luo
Summary: In this study, we propose a method of using computing metasurfaces for chiral edge sensing, incorporating a weak-value amplification technique. Experimental results demonstrate that high-contrast recognition of chirality can be achieved through edge detection, which may have potential applications in real-time measurement and separation of chiral enantiomers.
Article
Optics
Shanshan He, Ruisi Wang, Wenhao Xu, Zhaoming Luo, Hailu Luo
Summary: Optical analog computing operates on the electromagnetic field through the interaction of light and matter. This paper proposes a concise method to observe transparent particles and successfully achieves high-contrast optical images. The method provides the possibility to directly observe protein particles in complex biological tissues.
Article
Optics
Yichang Shou, Yan Wang, Lili Miao, Shizhen Chen, Hailu Luo
Summary: This study introduces the idea of cascaded operations into all-optical spatial analog computing, achieves all-optical second-order spatial differentiators by cascading operation units, and demonstrates image edge detection applications.
Article
Physics, Applied
Ruisi Wang, Shanshan He, Hailu Luo
Summary: The visualization of transparent phase objects is crucial in biological research, but it is challenging due to the weak scattering and absorption. In this study, a differential microscopy based on the photonic spin Hall effect is proposed, which can achieve high-contrast imaging of pure phase objects. The phase distribution can be reconstructed by biased imaging, providing potential for high-resolution reconstruction and quantitative analysis of phase images.
PHYSICAL REVIEW APPLIED
(2022)
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.
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.
