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Coherence phase spectrum analyzer for a randomly fluctuated fractional vortex beam

photonics research 2024年第1期12卷 33-39页

作者： ZHUOYI WANG XINGYUAN LU JIANBO GAO XUECHUN ZHAO QIWEN ZHAN YANGJIAN CAI CHENGLIANG ZHAO School of Physical science and Technology Soochow UniversitySuzhou 215006China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China shandong Provincial Engineering and Technical center of light manipulations&shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250358China shandong joint research center of light manipulation science and photonics integrated chip of east china normal university and shandong normal university East China Normal UniversityShanghai 200241China

Fractional vortex beams exhibit a higher degree of modulation dimensions than conventional vortices,thus inheriting superior anti-turbulent transmission properties through the incorporation of additional coherence ***,aliasing the mixed modes induced by coherence degradation makes the quantitative measurement of the topological charge in fractional vortex beams *** this study,a coherence phase spectrum was introduced,and experimental demonstrations to quantitatively determine the fractional topological charge of partially coherent fractional vortex beams were *** leveraging the four-dimensional measurement of a partially coherent light field,the source coherence function was inversely reconstructed,and fractional topological charges were determined with high precision by extracting the phase spectrum of the coherence ***–Gaussian,elliptical Gaussian,and plane-wave-fraction vortex beams with various degrees of coherence were used to demonstrate measurement *** proposed method is applicable to X-rays and electron *** has potential applications in optical encryption,high-capacity optical communication,and quantum entanglement.

关键词： function fractional vortex

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Single-shot phase retrieval for randomly fluctuated and obstructed vortex beams

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science china(Physics,Mechanics & Astronomy) 2024年第4期67卷 72-80页

作者： Hao Zhang Jun’an Zhu Xingyuan Lu Zhiquan Hu Jianbo Gao Kun Liu Qiwen Zhan Yangjian Cai Chengliang Zhao School of Physical science and Technology Soochow UniversitySuzhou 215006China School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China shandong Provincial Engineering and Technical center of light manipulations Shandong Provincial Key Laboratory of Optics and Photonic DeviceSchool of Physics and ElectronicsShandong Normal UniversityJinan 250358China joint research center of light manipulation science and Photonic integrated chip of east china normal university and shandong normal university East China Normal UniversityShanghai 200241China

Vortex beams with orbital angular momentum play a crucial role in increasing the information capacity in optical *** magnitude of orbital angular momentum determines the ability of information *** practice,a vortex beam can encounter random objects or turbulence during free-space propagation,resulting in information ***,accurately measuring the orbital angular momentum of a randomly fluctuated and obstructed vortex beam is a considerable ***,we propose a single-shot method for the phase retrieval of a randomly fluctuated and obstructed vortex beam by combining the phase-shift theorem and self-reference *** results reveal that the sign and magnitude of the initial orbital angular momentum can be simultaneously determined based on their quantitative relation with the number of coherence singularities on the observation plane,thus addressing the effects of random occlusion and atmospheric *** proposed method considerably improved the accurate decoding of orbital angular momentum information in nonideal freespace optical communications.

关键词： optical vortex phase retrieve orbital angular momentum measurement antiturbulence antidisturbance

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Faster structured illumination microscopy using complementary encoding-based compressive imaging

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photonics research 2024年第4期12卷 740-748页

作者： ZHENGQI HUANG YUNHUA YAO YILIN HE YU HE CHENGZHI JIN MENGDI GUO DALONG QI LIANZHONG DENG ZHENRONG SUN ZHIYONG WANG SHIAN ZHANG State Key Laboratory of Precision Spectroscopy School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200241China School of Mathematical sciences University of Electronic Science and Technology of ChinaChengdu 611731China joint research center of light manipulation science and Photonic integrated chip of east china normal university and shandong normal university East China Normal UniversityShanghai 200241China Collaborative Innovation center of Extreme Optics Shanxi UniversityTaiyuan 030006China

Structured illumination microscopy (SIM) has been widely applied to investigate intricate biological dynamics due to its outstanding super-resolution imaging speed. Incorporating compressive sensing into SIM brings the possibility to further improve the super-resolution imaging speed. Nevertheless, the recovery of the superresolution information from the compressed measurement remains challenging in experiments. Here, we report structured illumination microscopy with complementary encoding-based compressive imaging (CECI-SIM) to realize faster super-resolution imaging. Compared to the nine measurements to obtain a super-resolution image in a conventional SIM, CECI-SIM can achieve a super-resolution image by three measurements;therefore, a threefold improvement in the imaging speed can be achieved. This faster imaging ability in CECI-SIM is experimentally verified by observing tubulin and actin in mouse embryonic fibroblast cells. This work provides a feasible solution for high-speed super-resolution imaging, which would bring significant applications in biomedical research.

关键词： illumination complementary faster

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Robust measurement of orbital angular momentum of a partially coherent vortex beam under amplitude and phase perturbations

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Opto-Electronic science 2024年第1期3卷 1-12页

作者： Zhao Zhang Gaoyuan Li Yonglei Liu Haiyun Wang Bernhard J.Hoenders Chunhao Liang Yangjian Cai Jun Zeng shandong Provincial Engineering and Technical center of light manipulations&shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250358China Collaborative Innovation center of light manipulation and Applications Shandong Normal UniversityJinan 250358China School of Physical science and Technology Soochow UniversitySuzhou 215006China School of Physical science and Technology Suzhou University of Science and TechnologySuzhou 215009China Zernike Institute for Advanced Materials University of GroningenNijenborgh 4NL-9747 AG GroningenThe Netherlands joint research center of light manipulation science and Photonic integrated chip of east china normal university and shandong normal university East China Normal UniversityShanghai 200241China

The ability to overcome the negative effects,induced by obstacles and turbulent atmosphere,is a core challenge of long-distance information transmission,and it is of great significance in free-space optical *** spatial-coherence structure,that characterizes partially coherent fields,provides a new degree of freedom for carrying ***,due to the influence of the complex transmission environment,the spatial-coherence structure is severely damaged during the propagation path,which undoubtedly limits its ability to transmit ***,we realize the robust far-field orbital angular momentum(OAM)transmission and detection by modulating the spatial-coherence structure of a partially coherent vortex beam with the help of the *** cross-phase enables the OAM information,quantified by the topological charge,hidden in the spatial-coherence structure can be stably transmitted to the far field and can resist the influence of obstructions and turbulence within the communication *** is due to the self-reconstruction property of the spatial-coherence structure embedded with the *** demonstrate experimentally that the topological charge information can be recognized well by measuring the spatial-coherence structure in the far field,exhibiting a set of distinct and separated dark rings even under amplitude and phase *** findings open a door for robust optical signal transmission through the complex environment and may find application in optical communication through a turbulent atmosphere.

关键词： degree of coherence orbital angular momentum cross-phase topological charge information transmission

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Three-dimensional isotropic microfabrication in glass using spatiotemporal focusing of high-repetition-rate femtosecond laser pulses

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Opto-Electronic Advances 2023年第10期6卷 18-29页

作者： Yuanxin Tan Haotian Lv Jian Xu Aodong Zhang Yunpeng Song Jianping Yu Wei Chen Yuexin Wan Zhaoxiang Liu Zhaohui Liu Jia Qi Yangjian Cai Ya Cheng shandong Provincial Engineering and Technical center of light manipulations&shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250014China XXL-The Extreme Optoelectromechanics Laboratory School of Physics and Electronics ScienceEast China Normal UniversityShanghai 200241China joint research center of light manipulation science and Photonic integrated chip of east china normal university and shandong normal university East China Normal UniversityShanghai 200241China Collaborative Innovation center of light manipulation and Applications Shandong Normal UniversityJinan 250358China

To improve the processing efficiency and extend the tuning range of 3D isotropic fabrication,we apply the simultaneous spatiotemporal focusing(SSTF)technique to a high-repetition-rate femtosecond(fs)fiber laser *** the SSTF scheme,we propose a pulse compensation scheme for the fiber laser with a narrow spectral bandwidth by building an extra-cavity pulse *** further demonstrate truly 3D isotropic microfabrication in photosensitive glass with a tunable resolution ranging from 8μm to 22μm using the SSTF of fs laser ***,we systematically investigate the influences of pulse energy,writing speed,processing depth,and spherical aberration on the fabrication *** a proof-of-concept demonstration,the SSTF scheme was further employed for the fs laser-assisted etching of complicated glass microfluidic structures with 3D uniform *** developed technique can be extended to many applications such as advanced photonics,3D biomimetic printing,micro-electromechanical systems,and lab-on-a-chips.

关键词： simultaneous spatiotemporal focusing technique pulse compensation pulse stretcher 3D isotropic fabrication chemical etching

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Multidimensional optical tweezers synthetized by rigid-body emulated structured light

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photonics research 2023年第9期11卷 1524-1534页

作者： LIUHAO ZHU YUPING TAI HEHE LI HUAJIE HU XINZHONG LI YANGJIAN CAI YIJIE SHEN School of Physics and Engineering Henan University of Science and TechnologyLuoyang 471023China State Key Laboratory of Transient Optics and photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China shandong Provincial Engineering and Technical center of light manipulations and shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250014China joint research center of light manipulation science and Photonic integrated chip of east china normal university and shandong normal university East China Normal UniversityShanghai 200241China Optoelectronics research Centre University of SouthamptonSouthampton SO171BJUK Centre for Disruptive Photonic Technologies School of Physical and Mathematical Sciences and The Photonics InstituteNanyang Technological UniversitySingapore 637378Singapore

Structured light with more extended degrees of freedom(DoFs)and in higher dimensions is increasingly gaining traction and leading to breakthroughs such as super-resolution imaging,larger-capacity communication,and ultraprecise optical trapping or *** DoFs for manipulating an object can access more maneuvers and radically increase maneuvering precision,which is of significance in biology and related microscopic ***,manipulating particles beyond three-dimensional(3D)spatial manipulation by using current all-optical tweezers technology remains *** overcome this limitation,we theoretically and experimentally present six-dimensional(6D)structured optical tweezers based on tailoring structured light emulating rigid-body *** method facilitates the evaluation of the methodology of rigid-body mechanics to synthesize six independent DoFs in a structured optical trapping system,akin to six-axis rigid-body manipulation,including surge,sway,heave,roll,pitch,and *** contrast to previous 3D optical tweezers,our 6D structured optical tweezers significantly improved the flexibility of the path design of complex trajectories,thereby laying the foundation for next-generation functional optical manipulation,assembly,and micromechanics.

关键词： rigid trapping breakthrough

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Electro-optic tuning of a single-frequencyultranarrow linewidth microdisk laser

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Advanced photonics 2022年第3期4卷 105-113页

作者： Jintian Lin Saeed Farajollahi Zhiwei Fang Ni Yao Renhong Gao Jianglin Guan Li Deng Tao Lu Min Wang Haisu Zhang Wei Fang Lingling Qiao Ya Cheng Chinese Academy of sciences(CAS) Shanghai Institute of Optics and Fine Mechanics(SIOM)State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser ScienceShanghaiChina university of Chinese Academy of sciences Center of Materials Science and Optoelectronics EngineeringBeijingChina university of Victoria Department of Electrical and Computer EngineeringVictoriaBritish ColumbiaCanada east china normal university School of Physics and Electronic ScienceXXL—The Extreme Optoelectromechanics LaboratoryShanghaiChina research center for Intelligent Sensing Zhejiang LabHangzhouChina Zhejiang university College of Optical Science and EngineeringThe Interdisciplinary Center for Quantum InformationState Key Laboratory of Modern Optical InstrumentationHangzhouChina east china normal university State Key Laboratory of Precision SpectroscopyShanghaiChina Jiaxing Institute of Zhejiang university Intelligent Optics&Photonics Research CenterJiaxingChina Shanxi university Collaborative Innovation Center of Extreme OpticsTaiyuanChina shandong normal university Collaborative Innovation Center of Light Manipulations and ApplicationsJinanChina Shanghai research center for Quantum sciences Shang

Single-frequency ultranarrow linewidth on-chip microlasers with a fast wavelength tunability play a game-changing role in a broad spectrum of applications ranging from coherent communication,light detection and ranging,to metrology and *** and fabrication of such light sources remain a challenge due to the difficulties in making a laser cavity that has an ultrahigh optical quality(Q)factor and supports only a single lasing frequency ***,we demonstrate a unique single-frequency ultranarrow linewidth lasing mechanism on an erbium ion-doped lithium niobate(LN)microdisk through simultaneous excitation of high-Q polygon modes at both pump and laser *** the polygon modes are sparse within the optical gain bandwidth compared with the whispering gallery mode counterpart,while their Q factors(above 10 million)are even higher due to the significantly reduced scattering on their propagation paths,single-frequency lasing with a linewidth as narrow as 322 Hz is *** measured linewidth is three orders of magnitude narrower than the previous record in on-chip LN ***,enabled by the strong linear electro-optic effect of LN,real-time electro-optical tuning of the microlaser with a high tuning efficiency of∼50 pm∕100 V is demonstrated.

关键词： lasers lithium niobate microcavities integrated opti

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