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The interaction of in-band and in-gap lattice soliton trains in optically induced two-dimensional photonic lattices

Chinese Physics B 2010年第6期19卷 393-397页

作者：刘圣张鹏肖发俊甘雪涛赵建林 Shaanxi Key Laboratory of Optical Information Technology School of ScienceNorthwestern Polytechnical University The Key Laboratory of Space Applied Physics and Chemistry Ministry of Education

We demonstrate the coherent interactions of lattice soliton trains, including in-band solitons （IBSs） and gap soliton trains （GSTs）, in optically induced two-dimensional photonic lattices with self-defocusing nonlinearity. It is revealed that the π-staggered phase structures of the lattice soliton trains will lead to anomalous interactions. Solely by changing their initial separations, the transition between attractive and repulsive interaction forces or reversion of the energy transfer can be obtained. The ‘negative refraction＇ effect of the soliton trains on the interaction is also discussed. Moreover, two interacting IBSs can merge into one GST when attraction or energy transfer happens.

关键词： soliton interaction in-band soliton gap soliton train photonic lattice

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Experimental demonstration of optical Bloch oscillation in electromagnetically induced photonic lattices

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Fundamental Research 2022年第3期2卷 401-404页

作者： Zhaoyang Zhang Shaohuan Ning Hua Zhong Milivoj RBelić Yiqi Zhang Yuan Feng Shun Liang Yanpeng Zhang Min Xiao Key Laboratory for Physical Electronics and Devices of the Ministry of Education&Shaanxi Key Lab of Information photonic Technique School of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’anShaanxi 710049China Science Program Texas A&M University at QatarP.O.Box 23874DohaQatar Department of Physics University of ArkansasFayettevilleArkansas 72701USA National Laboratory of Solid State Microstructures and School of Physics Nanjing UniversityNanjingJiangsu 210093China

The optical Bloch oscillation(OBO)is an optical-quantum analogy effect that is significant for light field manipulations,such as light beam localization,oscillation and *** an intra-band oscillation,OBO was important for optical investigations in photonic lattices and atomic vapors over an extended period of ***,OBO in reconfigurable platforms is still an open topic,even though tunability is highly desired in developing modern photonic *** we theoretically establish and experimentally demonstrate OBO in an electromagnet-ically induced photonic lattice with a ramping refractive index,established in a coherently-prepared three-level 85 Rb atomic vapor under the electromagnetically induced transparency *** is achieved by interfering two coupling beams with Gaussian profiles and launching a probe beam that exhibits OBO within the resulting *** induced reconfigurable photonic lattice possesses a transverse gradient,due to the innate edges of Gaussian beams,and sets a new stage for guiding the flow of light in periodic photonic *** results should motivate better understanding of peculiar physical properties of an intriguing quantum-optical analogy in an atomic setting.

关键词： Optical bloch oscillation Electromagnetically induced transparency photonic lattice Atomic coherence effect Beam dynamics

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Simultaneous creation of multiple vortex-antivortex pairs in momentum space in photonic lattices

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Advanced photonics 2023年第6期5卷 92-100页

作者： Feng Li Sergei V.Koniakhin Anton V.Nalitov Evgeniia Cherotchenko Dmitry D.Solnyshkov Guillaume Malpuech Min Xiao Yanpeng Zhang Zhaoyang Zhang Xi'an Jiaotong University Key Laboratory for Physical Electronics and Devices of the Ministry of EducationShaanxi Key Laboratory of Information Photonic TechniqueSchool of Electronic Science and EngineeringFaculty of Electronics and InformationXi’anChina Institute for Basic Science Center for Theoretical Physics of Complex SystemsDaejeonRepublic of Korea Korea University of Science and Technology(UST) Basic Science ProgramDaejeonRepublic of Korea Moscow Institute of Physics and Technology DolgoprudnyiRussia University of Wolverhampton Faculty of Science and EngineeringWolverhamptonUnited Kingdom ITMO University St.PetersburgRussia Ioffe Institute St.PetersburgRussia UniversitéClermont Auvergne Institut PascalPHOTON-N2CNRSClermont INPClermont-FerrandFrance Institut Universitaire de France ParisFrance University of Arkansas Department of PhysicsFayettevilleArkansasUnited States Nanjing University School of PhysicsNational Laboratory of Solid State MicrostructuresNanjingChina

Engineering of the orbital angular momentum(OAM)of light due to interaction with photonic lattices reveals rich physics and motivates potential *** report the experimental creation of regularly distributed quantized vortex arrays in momentum space by probing the honeycomb and hexagonal photonic lattices with a single focused Gaussian *** the honeycomb lattice,the vortices are associated with Dirac ***,we show that the resulting spatial patterns of vortices are strongly defined by the symmetry of the wave packet evolving in the photonic lattices and not by their topological *** findings reveal the underlying physics by connecting the symmetry and OAM conversion and provide a simple and efficient method to create regularly distributed multiple vortices from unstructured light.

关键词： vortex photonic lattice orbital angular momentum topology symmetry

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