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| 1 | Highly efficient generation of arbitrary vector beams with tunable polarization, phase, and amplitude显示文摘We propose an efficient and robust method to generate tunable vector beams by employing a single phasetype spatial light modulator(SLM). With this method, a linearly polarized Gaussian beam can be converted into a vector beam with arbitrarily controllable polarization state, phase, and amplitude. The energy loss during the conversion is greatly reduced and depends mainly on the reflectivity of the SLM. We experimentally demonstrate that conversion efficiency of about 47% is achieved by using an SLM with reflectivity of 62%.Several typical vector beams, including cylindrical vector beams, vector beams on higher order Poincaré spheres,and arbitrary vector beams attached with phases and with tunable amplitude, are generated and verified experimentally. This method is also expected to create high-power vector beams and play important roles in optical fabrication and light trapping. | SHENG LIU SHUXIA QI YI ZHANG PENG LI DONGJING WU LEI RAN JIANLIN ZHAO | 2018 | Photonics Research2018，6，4： | 23 |
| 2 | Polarization oscillating beams constructed by copropagating optical frozen waves显示文摘Polarization oscillating beams, namely, polarization standing waves, commonly formed by a pair of coherent counterpropagating light waves with orthogonal polarizations, oscillate their states of polarization periodically within a wavelength interval, offering conceptual and practical interests in light-matter interactions such as the nonreciprocal magnetoelectric effect, and impressive applications in optical imaging, sensing, and chirality detection. Here, we propose a new class of polarization oscillating beams that longitudinally vary states of polarization with spatial intervals within centimeters via the superposition of two copropagating optical frozen waves with preshaped longitudinal intensity profiles and transverse phase structures. The flexibility and manipulability are demonstrated by creating several polarization oscillating beams with different polarization structures. This work paves a new way to manipulate other waves and may be useful for applications of optical standing waves in optical manipulation, light guiding of atoms, polarization-sensitive sensing, etc. | PENG LI DONGJING Wu YI ZHANG SHENG LIU Yu LI SHUXIA QI JIANLIN ZHAO | 2018 | Photonics Research2018，6，7： | 5 |
| 3 | Thrombospondin I activates the macrophage Toll-like receptor 4 pathway显示文摘 | Yanzhang Li Xinyu Qi Xiaopeng Tong Shuxia Wang | 2013 | Cellular & Molecular Immunology2013，10，6： | 4 |
| 4 | Dynamically measuring the holo-information of light fields in three-dimensional space using a periodic polarization-structured light显示文摘Spatially structured light field has attracted great attention due to its novel properties and application potential in numerous fields.Among them,the most striking one is the polarization-structured light,known as the vector beam.Here,using a periodic polarization-structured light,we propose a method to dynamically measure the holo-information of light fields,including the amplitude,phase,and polarization distributions,in three-dimensional(3D)space.The measurement system is composed of a Mach-Zender interferometer involving a liquid crystal polarized grating in the reference arm,which is simple,stable,and easy to operate.Featuring the single-shot measurement,this method supports observing the dynamic variation of object light fields.The accuracy,3D polarimetry,and dynamic observation of this method are validated by measuring a calibrated quarter-wave plate,a vector vortex beam,a Poincarébeam,and a stressed polymethyl methacrylate sample. | ShuXia Qi Sheng Liu Lei Han BingYan Wei Peng Li JinZhan Zhong XuYue Guo JianLin Zhao | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，6： | 3 |
| 5 | Modulation of orbital angular momentum on the propagation dynamics of light fields显示文摘Optical vortices carrying orbital angular momentum(OAM)have attracted extensive attention in recent decades because of their interesting applications in optical trapping,optical machining,optical communication,quantum information,and optical microscopy.Intriguing effects induced by OAMs,such as angular momentum conversion,spin Hall effect of light(SHEL),and spin– orbital interaction,have also gained increasing interest.In this article,we provide an overview of the modulations of OAMs on the propagation dynamics of scalar and vector fields in free space.First,we introduce the evolution of canonical and noncanonical optical vortices and analyze the modulations by means of local spatial frequency.Second,we review the Pancharatnam–Berry(PB)phases arising from spin–orbital interaction and reveal the control of beam evolution referring to novel behavior such as spindependent splitting and polarization singularity conversion.Finally,we discuss the propagation and focusing properties of azimuthally broken vector vortex beams. | Peng LI Sheng LIU Yi ZHANG Lei HAN Dongjing WU Huachao CHENG Shuxia QI Xuyue GUO Jianlin ZHAO | 2019 | Frontiers of Optoelectronics2019，12，1： | 2 |
| 6 | Construction, detection and microarray analysis on the Shigella flexneri 2a sitC mutant显示文摘In order to overcome the defects of difficult gene operations in low-copy suicide plasmid pCVD442, Gateway technology was applied in the construction process of recombinant plasmid for gene knockout in this study. With this improved knockout system, we inactivated sitC gene, which is associated with iron transport in Shigella flexneri 2a strain 301, to yield the mutant, MTS. The functional detection of the mutant was performed at the level of culture medium, cell and animal experiment, respectively. The gene expression profiles were compared with DNA microarray between the mutant and the wild type under iron-restricted conditions. The results showed that MTS grew obviously less well than the wild-type strains in L broth containing 150 μmol/L iron chelator DIP(2,2′-dipyridyl). Addition of iron or manganese to the cultures stimulated the growth of MTS to wild-type levels in rich culture medium. In either the experiment on the ability of intracellular multiplication and cell-to-cell spread in HeLa and U937 cell lines, or the experiment on keratoconjunctivitis in guinea pigs, MTS showed no obvious changes in virulence compared with the parental strain Sf301. When 65 μmol/L DIP was added to the cultured HeLa cells, the ability of intracellular multiplication of MTS reduced about 51.6% as compared with that of Sf301. The analysis of expression profiles under iron-limited condition showed that MTS was more sensitive for the change of iron deficiency than Sf301. There are 106 more up-regulated genes in MTS than in wild-type strains, which are involved in membrane transportation, amino acid metabolism and uncategorized function genes, while down-regulated genes are mainly in- volved in energy and carbohydrate metabolism. Under low iron conditions, the expression levels of known iron-transport associated genes generally increased. Additionally, the number of these genes and their increase amplitude in MTS are more than those in Sf301. Together, these results confirmed that Sit iron-transport system is important for the growth of Shigella. | LIU Moqing LIU Hong SUN Lilian DONG Jie XUE Ying CHEN Shuxia JIN Qi | 2005 | Science China(Life Sciences)2005，48，3： | 1 |
| 7 | Highly dispersed metal incorporated hexagonal mesoporous silicates for catalytic cyclohexanone oxidation to adipic acid显示文摘Adipic acid is a dicarboxylic acid of great industrial importance,mainly used in the production of nylon-6,6 and polyurethane.The use of nitric acid as an oxidant in the industrial production of adipic acid poses significant carbon footprint to the environment.Clean adipic acid synthesis methods using a heterogeneous catalyst with H2O2 as oxidant and water as solvent have potential advantages of low catalyst cost,easy synthesis and recovery,cleanness and environmental protection.In this work,hexagonal mesoporous silicate materials were synthesized by a sol–gel method and evaluated for cyclohexanol/cyclohexanone oxidation to adipic acid.The physical and chemical properties of Fe-HMS were characterized by XRD,HR-TEM,BET and UV–Vis.The experimental results showed that Fe-HMS materials show pore sizes ranging from 2–3 nm.W-and Mo-based polyoxometalates were also evaluated and compared to the Fe-based HMS catalysts.To improve the adipic acid yield,the influence of the transition metal as well as the effect of metal loading,reaction temperature and catalyst amount on the catalytic performances of Fe-HMS have been investigated in details.When Si/Fe atomic ratio=100,Fe-HMS catalyst shows the highest activity,with a cyclohexanone conversion of 92.3%and adipic acid selectivity of 29.4%.The reaction pathway of cyclohexanone oxidation was further proposed based on experimental data. | Wenjuan Yan Wenxiang Zhang Qi Xia Shuaishuai Wang Shuxia Zhang Jian Shen Xin Jin | 2020 | Chinese Journal of Chemical Engineering2020，28，10： | 1 |
| 8 | Controllable oscillated spin Hall effect of Bessel beam realized by liquid crystal Pancharatnam-Berry phase elements显示文摘Pancharatnam–Berry (PB) phase has become an effective tool to realize the photonic spin Hall effect (PSHE) in recent years, due to its capacity of enhancing the spin-orbit interaction. Various forms of PSHEs have been proposed by tailoring the PB phase of light, however, the propagation trajectory control of the separated spin states has not been reported. In this paper, we realize the oscillated spin-dependent separation by using the well-designed PB phase optical elements based on the transverse-to-longitudinal mapping of Bessel beams. Two typical oscillated PSHEs, i.e., the spin states are circulated and reversed periodically, are experimentally demonstrated with two PB phase elements fabricated with liquid crystal. The displacements and periods of these oscillations can be controlled by changing the transverse vector of the input Bessel beam. The proposed method offers a new degree of freedom to manipulate the spin-dependent separation, and provides technical supports for the application in spin photonics. | Sheng Liu Shuxia Qi Yanke Li Bingyan Wei Peng Li Jianlin Zhao | 2022 | Light(Science & Applications)2022，11，8： | 0 |
| 9 | Visible frequency broadband dielectric metahologram by random Fourier phase-only encoding显示文摘In recent years,metasurfaces that enable the flexible wavefront modulation at sub-wavelength scale have been widely used into holographic display,due to its prominent advantages in polarization degrees of freedom,viewing angle,and achromaticity in comparison with traditional holographic devices.In holography,the computational complexity of hologram,imaging sharpness,energy utilization,reproduction rate,and system indirection are all determined by the encoding method.Here,we propose a visible frequency broadband dielectric metahologram based on the random Fourier phase-only encoding method.Using this simple and convenient method,we design and fabricate a transmission-type geometric phase all-dielectric metahologram,which can realize holographic display with high quality in the visible frequency range.This method encodes the amplitude information into the phase function only once,eliminating the cumbersome iterations,which greatly simplifies the calculation process,and may facilitate the preparation of large area nanoprint-holograms. | XuYue Guo Peng Li BingJie Li Sheng Liu BingYan Wei Wei Zhu JinZhan Zhong ShuXia Qi JianLin Zhao | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，1： | 0 |
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