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Editorial of special issue on optics and photonics for the 40th anniversary of institute of Modern optics,Nankai University

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Chinese optics Letters 2024年第9期22卷 1-2页

作者： Haitao Liu Lingling Huang Yange Liu Jiangbing Du Shengjiang Chang Weiwei Liu Nankai University China Beijing institute of Technology China Shanghai Jiao Tong University China

On the occasion of the 40th anniversary of the institute of Modern optics(IMO),Nankai University(19th October 2024),Chinese optics Letters(COL)is publishing this special issue to highlight the most exciting research on optics and photonics performed recently at the IMO or by the alumni in the world widely,with all manuscripts being subject to the normal standards and peer-review processes of *** IMO was founded in 1984 by the late academician Guoguang Mu,who was the former President of Nankai University,Chairman of the China Optical Society,and Vice Chairman of the International Optical *** then,the IMO has conducted top-level research and provided education in optics and *** IMO has been honored as the first-level national key discipline since *** 2003,in order to broaden the scope of the academic curriculum and to provide a unique learning experience for undergraduate students,the Department of Optoelectronic Technology and Science was established for joint education with Tianjin University in Optoelectronic Information Science and *** the past 40 years,more than 1800 degrees have been awarded by the *** alumni spread around the globe,and many have become internationally renowned *** recognize its educational achievement,the IMO has received the Society of Photo-Optical Instrumentation Engineers(SPIE)Excellence in Education *** IMO will continue to carry forward the character of Nankai,develop its spirit,persist in giving top priority to cultivating the integrity of students,strengthen its quality,and develop towards the goal of building a world-leading institute.

关键词： anniversary education Chairman

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Establishment and verification of theoretical model for underwater light-sheet Scheimpflug LiDAR system

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Science China Technological Sciences 2025年第1期 54-61页

作者： Fei FENG Guojun WU Bo LIU Xu ZHAO Yafeng WU Jinghan XU Xi'an institute of optics and Precision Mechanics Chinese Academy of Sciences University of Chinese Academy of Sciences

The Scheimpflug imaging in the air can increase the depth-of-view and has been well studied with an accurate Scheimpflug imaging model. However, there is no corresponding underwater light-sheet Scheimpflug(ULSS) imaging *** a result, imaging accuracy cannot be ensured in the design phase, which mainly relies on the post-calibration. In this paper,the ULSS imaging model is firstly established, which gives the relationship between the pixel number and target distance, as well as that between the target distance and range resolution. A new experimental bracket and an underwater Scheimflug imaging lens were designed and developed. Based on this new device, several experiments were carried out in a pool to study the range resolution of this ULSS LiDAR, by which the correctness of the imaging model was verified. It also shows that the newly designed ULSS LiDAR can achieve a millimeter-level resolution within 8 m.

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New progress in Ti:sapphire research and development

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Chinese Journal of Lasers 1995年第1期B4卷 87-89页

作者： ZHANG Qiang DENG Peizhen(Shanghai,institute of optics and Fine Mechanics,Academia Sinica,Shanghai 201800,China) Shanghai Inst of optics and Fine Mechanics Shanghai China

ＮｅｗＰｒｏｇｒｅｓｓｉｎＴｉ：ＳａｐｐｈｉｒｅＲｅｓｅａｒｃｈａｎｄＤｅｖｅｌｏｐｍｅｎｔＮｅｗＰｒｏｇｒｅｓｓｉｎＴｉ：ＳａｐｐｈｉｒｅＲｅｓｅａｒｃｈａｎｄＤｅｖｅｌｏｐｍｅｎｔ￥ＺＨＡＮＧＱｉａｎｇ；ＤＥＮＧ... 详细信息

ＮｅｗＰｒｏｇｒｅｓｓｉｎＴｉ：ＳａｐｐｈｉｒｅＲｅｓｅａｒｃｈａｎｄＤｅｖｅｌｏｐｍｅｎｔＮｅｗＰｒｏｇｒｅｓｓｉｎＴｉ：ＳａｐｐｈｉｒｅＲｅｓｅａｒｃｈａｎｄＤｅｖｅｌｏｐｍｅｎｔ￥ＺＨＡＮＧＱｉａｎｇ；ＤＥＮＧＰｅｉｚｈｅｎ（Ｓｈａｎｇｈａｉ，...

关键词： Ti New progress in Ti

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Mode characteristics of hollow core Bragg fiber

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Chinese optics Letters 2005年第3期3卷 132-135页

作者：季敏宁石志东郭强 institute of Fiber optics

Analytical expression to calculate propagation constant and mode field of the hollow core Bragg fiber is derived. Numerical results are presented. It is shown that the fundamental mode of the hollow core Bragg fiber is circularly symmetric TE01 mode with no polarization degeneracy, while the higher order mode may be HE11, TM01, or TEo2 etc.. This property is different from conventional optical fiber that its fundamental mode is the linearly polarized HE11 mode and is polarization degeneracy.

关键词： Calculations Light polarization Light propagation Numerical methods Optical fibers

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Material removal model of vertical impinging in fluid jet polishing

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Chinese optics Letters 2010年第3期8卷 323-325页

作者：施春燕袁家虎伍凡侯溪万勇建 institute of optics and ElectronicsChinese Academy of Sciences

It is important for precise fabrication to research the material removal model of polishing. Simulation is done by computational fluid dynamics for fluid jet polishing （FJP）. Numerical research and theoretical description for abrasive particles discrete system are taken by population balance modeling method, and experiments are taken to research the removal profile by vertical fluid jet polishing （VFJP）. The results of experiment and sinmlation show that the removal profile of VFJP turns on a W-shaped profile. By analyzing the material removal mechanism of FJP that material is removed by particles impinging wear and wall movement erosion, the mathematical material removal model of VFJP is enduced. Comparing the mathematical material removal model with the experimental removal profile, it is found that the mathematical material removal model of VFJP is accurate.

关键词： Computational fluid dynamics Experiments Fluids Polishing Population statistics

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Excitonic optical absorption in semiconductors under intense terahertz radiation

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Chinese Physics B 2008年第11期17卷 4285-4291页

作者：张同意赵卫 State Key Laboratory of Transient optics and Photonics Xi'an Institute of Optics and Precision MechanicsChinese Academy of Sciences State Key Laboratory of Transient optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of Sciences

The excitonic optical absorption of GaAs bulk semiconductors under intense terahertz （THz） radiation is investigated numerically. The method of solving initial-value problems, combined with the perfect matched layer technique, is used to calculate the optical susceptibility. In the presence of a driving THz field, in addition to the usual exciton peaks, 2p replica of the dark 2p exciton and even-THz-photon-sidebands of the main exciton resonance emerge in the continuum above the band edge and below the main exciton resonance. Moreover, to understand the shift of the position of the main exciton peak under intense THz radiation, it is necessary to take into consideration both the dynamical Franz-Keldysh effect and ac Stark effect simultaneously. For moderate frequency fields, the main exciton peak decreases and broadens due to the field-induced ionization of the excitons with THz field increasing. However, for high frequency THz fields, the characteristics of the exciton recur even under very strong THz fields, which accords with the recent experimental results qualitatively.

关键词： exciton optical absorption terahertz radiation dynamical Franz-Keldysh effect

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Planar ion chip design for scalable quantum information processing

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Chinese Physics B 2008年第10期17卷 3565-3573页

作者：万金银王育竹刘亮 Key Laboratory for Quantum optics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences

We investigate a planar ion chip design with a two-dimensional array of linear ion traps for scalable quantum information processing. Qubits are formed from the internal electronic states of trapped ^40Ca^＋ ions. The segmented electrodes reside in a single plane on a substrate and a grounded metal plate separately, a combination of appropriate rf and DC potentials is applied to them for stable ion confinement. Every two adjacent electrodes can generate a linear ion trap in and between the electrodes above the chip at a distance dependent on the geometrical scale and other considerations. The potential distributions are calculated by using a static electric field qualitatively. This architecture provides a conceptually simple avenue to achieving the microfabrication and large-scale quantum computation based on the arrays of trapped ions.

关键词： ion traps ion chip quantum information processing

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Thermal phase change and activation energy of crystallization of Ge-Sb-Te-Sn thin films

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Chinese optics Letters 2003年第12期1卷 716-718页

作者：顾四朋侯立松赵启涛黄瑞安 Shanghai institute of optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 Department of Physics New Jersey Institute of Technology Newark NJ 07102 USA Shanghai institute of optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800

To improve the optical storage performance, Sn was doped into Ge2Sb2Te5 phase change thin films. The optical and thermal properties of Sn-doped Ge2Sb2Te5 film were investigated. The crystal structures of the as-sputtered and the annealed films were identified by the X-ray diffraction (XRD) method. The differential scanning calorimeter (DSC) method is used to get the crystallization temperature and crystallization energy (Ea). It was found that proper Sn-doping could highly improve storage performance of the Ge2Sb2Te5 media.

关键词： Differential scanning calorimetry Optical films X ray diffraction analysis

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Experimental study of the dependences of retrieval efficiencies on time delay between magneto-optical-trap being turned off and optical storage

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Chinese Physics B 2016年第2期25卷 175-180页

作者：陈力荣徐忠孝李萍温亚飞曾炜卿武跃龙田龙李淑静王海 The State Key of Quantum optics and Quantum optics Devices Institute of Opto-Electronics Shanxi University

We report an experimental study of electromagnetically induced transparency（EIT）-based light storage in a cloud of cold atoms loaded into a magneto-optical-trap（MOT）. After the MOT is turned off, the retrieval efficiencies of rightand left-circularly polarized signal light fields each as a function of storage time are measured for different time delays between MOT off and the storage event, respectively. The results show that in the delay ranging from 0.015 ms to 3.5 ms,the retrieval efficiency for a zero-storage time（0.2 μs） and the storage lifetime can exceed 15% and 1.4 ms, *** measured results will provide important help for optimizing the storage of the polarized entanglement photons in cold atomic ensembles.

关键词： light storage electromagnetically induced transparency cold atomic ensemble experimental rep-etition rate

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Radiation-induced effects in polarization-maintaining optical fibers for interferometric gyroscope

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Chinese optics Letters 2011年第6期9卷 21-23页

作者：王学勤张春熹金靖宋凝芳 institute of optics and Electronics Beihang University

Radiation-induced attenuation （RIA） in four types of polarization-maintaining optical fibers for interfer-ometric fiberoptic gyroscope （IFOG） at 1310 nm is measured. The measurements are conducted during and after steady-state γ-ray irradiation using a 60 Co source in order to observe significantly different RIA behavior and recovery kinetics. Mechanisms involving dopants and manufacturing process are introduced to analyze the RIA discrepancy as well as to guide the choice and hardening of optical fibers during the design of IFOG. Medium-accuracy IFOG using Ge–F-codoped fiber and pure silica core fiber can survive in the space radiation environment.

关键词： Doping (additives) Fiber optic sensors Germanium Gyroscopes Interferometry Optical fibers Polarization Radiation effects Silica

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