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2025

Record 25 of

Title:Effect of Multi-dressing quantization on three-mode quantum squeezing in Nature Non-Hermitian atomic Ensemble

Author Full Names:Huang, Cheng; Wei, Jiajia; Zhuang, Rui; Yang, Qinyue; Liu, Ziyang; Feng, Fang; Zhu, Xiangping; Zhao, Wei; Cai, Yin; Zhang, Yanpeng
Source Title:OPTICS AND LASER TECHNOLOGY
Language:English
Document Type:Article
Keywords Plus:ENTANGLEMENT; SENSITIVITY
Abstract:This paper reports the three-mode quantum squeezing generated in the four-wave mixing process of dressing field coupled energy level transitions in single 85 Rb vapor. Based on the natural non-Hermitian atomic coherence, the effect of the dressing field on nonlinear gain and quantum squeezing is studied, revealing that when the Rabi frequency of the dressing field is dominant, the dressing field has the advantage of weakening the nonlinear gain of the system but enhancing the three-mode quantum squeezing. However, when the de-phase rate of energy level is dominant, the dressing field has the advantage of enhancing the nonlinear gain characteristics even though the three-mode quantum squeezing is relatively weakened. It can be used for quantum information processing and development of quantum memory devices with enhanced sensitivity in the future.
Addresses:[Huang, Cheng; Wei, Jiajia; Zhuang, Rui; Yang, Qinyue; Liu, Ziyang; Feng, Fang; Cai, Yin; Zhang, Yanpeng] Xi An Jiao Tong Univ, Sch Elect Sci & Engn, Key Lab Phys Elect & Devices, Shaanxi Key Lab Informat Photon Tech,Minist Educ, Xian 710049, Shaanxi, Peoples R China; [Huang, Cheng; Feng, Fang; Zhu, Xiangping; Zhao, Wei] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China; [Huang, Cheng; Feng, Fang; Zhu, Xiangping; Zhao, Wei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Affiliations:Xi'an Jiaotong University; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
Publication Year:2025
Volume:183
Article Number:112310
DOI Link:http://dx.doi.org/10.1016/j.optlastec.2024.112310
數(shù)據(jù)庫ID（收錄號）:WOS:001390553800001
Record 26 of

Title:Leveraging central-surrounding receptive fields for single image dehazing

Author Full Names:Tang, Zhifeng; Zhang, Yunyao; Zhang, Peng; Dong, Wenkang; Zhang, Zhiyong; Zhang, Xingguang; Zhang, Ning
Source Title:NEUROCOMPUTING
Language:English
Document Type:Article
Keywords Plus:NETWORK; HAZE
Abstract:Image dehazing is a representative low-level vision task that estimates latent haze-free images from hazy images. In recent years, Vision Transformers (ViT) have shown promising dehazing performance, leveraging their capacity for global perception through long-sequence dependencies in cost of high resource consumption. Therefore, our approach seeks to integrate the utilization of global information into the Convolutional Neural Network (CNN) framework in a more resource-efficient manner. In this paper, we introduce the Adaptive Center-Surround Receptive Field (ACSRF) network architecture inspired by the central-peripheral receptive field in biological vision for single-image haze removal. This leads to a unique receptive field mechanism that effectively combines both central and surrounding information. Our ACRSF addresses this by initially compressing global information and then merging it within the CNN, significantly boosting the capability to integrate local and global information, and effectively handling dominant color tones. Experimental results on four publicly available real-world image dehazing datasets show that our ACRSF outperforms current state-of-the-art methods in recovering global information, especially in dominant color tones. Importantly, this technology demonstrates its effectiveness in realistic scenarios, contributing significantly to improving traffic safety in adverse weather conditions. The code is available at https://github.com/JavanTang/ACSRF.
Addresses:[Tang, Zhifeng; Zhang, Yunyao; Dong, Wenkang; Zhang, Zhiyong; Zhang, Xingguang] Northwest Univ, Sch Informat Sci & Technol, Xian 710127, Peoples R China; [Tang, Zhifeng] China Elect Technol Grp Corp 20th Res Inst, Xian 710071, Peoples R China; [Zhang, Peng] Northwestern Polytech Univ, Sch Comp Sci, Xian 710129, Peoples R China; [Zhang, Ning] Xian Inst Opt & Precis Mech CAS, Key Lab Spectral Imaging Technol, Xian 710119, Peoples R China
Affiliations:Northwest University Xi'an; Northwestern Polytechnical University; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS
Publication Year:2025
Volume:618
Article Number:129075
DOI Link:http://dx.doi.org/10.1016/j.neucom.2024.129075
數(shù)據(jù)庫ID（收錄號）:WOS:001386468300001
Record 27 of

Title:Low-light image enhancement via illumination optimization and color correction

Author Full Names:Zhang, Wenbo; Xu, Liang; Wu, Jianjun; Huang, Wei; Shi, Xiaofan; Li, Yanli
Source Title:COMPUTERS & GRAPHICS-UK
Language:English
Document Type:Article
Keywords Plus:RETINEX
Abstract:The issue of low-light image enhancement is investigated in this paper. Specifically, a trainable low-light image enhancer based on illumination optimization and color correction, called LLOCNet, is proposed to enhance the visibility of such low-light image. First, an illumination correction network is designed, leveraging residual and encoding-decoding structure, to correct the illumination information of the V-channel for lighting up the low-light image. After that, the illumination difference map is derived by difference between before and after luminance correction. Furthermore, an illumination-guided color correction network based on illumination- guided multi-head attention is developed to fine-tune the HS color channels. Finally, a feature fusion block with asymmetric parallel convolution operation is adopted to reconcile these enhanced features to obtain the desired high-quality image. Both qualitative and quantitative experimental results show that the proposed network favorably performs against other state-of-the-art low-light enhancement methods on both real-world and synthetic low-light image dataset.
Addresses:[Zhang, Wenbo; Xu, Liang; Wu, Jianjun; Huang, Wei; Shi, Xiaofan] Chinese Acad Sci, Lab Aeronaut Optoelect Technol, Xian Inst Opt & Precis Mech, Xian 710119, Shaanxi, Peoples R China; [Li, Yanli] Northwestern Polytech Univ, Sch Marine Sci & Technol, Xian 710072, Shaanxi, Peoples R China
Affiliations:Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Northwestern Polytechnical University
Publication Year:2025
Volume:126
Article Number:104138
DOI Link:http://dx.doi.org/10.1016/j.cag.2024.104138
數(shù)據(jù)庫ID（收錄號）:WOS:001383763200001
Record 28 of

Title:A novel turbidity compensation method for fluorescence spectroscopy and application in the detection of two algae species

Author Full Names:Li, Ruizhuo; Dong, Jing; Wu, Guojun; Gao, Limin; Yang, Min
Source Title:SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Language:English
Document Type:Article
Abstract:Turbidity interference in measurements can reduce the accuracy of fluorescence detection. Conventional turbidity compensation methods directly establish the relationship between turbidity value and fluorescence but cannot accurately characterize the complex interference of turbidity on fluorescence detection. This paper introduces a novel turbidity compensation technique that separates the interference caused by turbidity particles into scattering intensifying and scattering-absorption attenuating components and corrects them separately. First, the scattering spectrum overlapping with fluorescence is estimated and subtracted from the actual sample spectrum to mitigate the fluorescence intensification caused by scattering. Then, attenuation coefficients at different turbidity intervals are calculated to compensate for fluorescence attenuation. Finally, the two components are combined to obtain the final corrected result. Based on the proposed method, the fluorescence spectra data of Platymonas helgolandica var. tsingtaoensis and Synechococcus elongatus undeod is evaluated. The core problem for comper different turbidity interferences were analyzed. Intensifying and attenuating coefficients based on turbidity values and scattering spectra were determined, ensuring adaptability to known and unknown turbidity conditions. The study results show that the fluorescence variation at different concentrations and turbidity levels are influenced by sample concentration and turbidity, exhibiting nonlinear behavior. The compensation model developed was applied to experimental data, achieving a mean relative error of less than 4% and a satisfactory root-mean-square error, significantly enhancing prediction accuracy. This method offers a straightforward and rapid application to detect a wide range of fluorescent substances.
Addresses:[Li, Ruizhuo; Dong, Jing; Wu, Guojun; Gao, Limin] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China; [Li, Ruizhuo; Dong, Jing] Univ Chinese Acad Sci, Coll Photoelect, Beijing 100049, Peoples R China; [Wu, Guojun] Laoshan Lab, Qingdao 266237, Peoples R China; [Yang, Min] Minist Nat Resources, North China Sea Marine Tech Ctr, Qingdao 266033, Peoples R China
Affiliations:Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Laoshan Laboratory; Ministry of Natural Resources of the People's Republic of China
Publication Year:2025
Volume:329
Article Number:125510
DOI Link:http://dx.doi.org/10.1016/j.saa.2024.125510
數(shù)據(jù)庫ID（收錄號）:WOS:001374405600001
Record 29 of

Title:Enhancement of the Gain and Stability in a Discrete Dynode Electron Multiplier Through Differential Voltage Distribution Among Dynodes

Author Full Names:Yang, Jishi; Li, Jie; Zhao, Wanru; He, Li; Wang, Ruozheng; Zhao, Yuan; Hu, Wenbo; Tian, Jinshou; Wu, Shengli
Source Title:IEEE TRANSACTIONS ON ELECTRON DEVICES
Language:English
Document Type:Article
Keywords Plus:EMISSION
Abstract:We proposed an effective strategy involvinga differential distribution of voltages among dynodes tosignificantly enhance the gain and stability of discrete dyn-ode electron multipliers (DEMs) under continuous electronbombardment. The effects of the differential voltage distri-bution on the DEM performance were systematically inves-tigated through experiments and numerical simulations.The differential voltage distribution of 7:7:7:7:7:5:5:5:5enables the DEM to achieve a gain of 3.4x104, repre-senting a substantial increase by 2.1 times at an operatingvoltage of 1200 V, and the operating voltage at a gain of106to be reduced to 1949 V with a decrease of 186 Vin comparison to the traditional uniform voltage distribu-tion of 1:1:1:1:1:1:1:1:1. The gain enhancement is closelyrelated to the increased average secondary electron emis-sion (SEE) coefficients of dynodes D2-D6 and the improvedelectron collection efficiencies of dynodes D3 and D6. Addi-tionally, the differential voltage also reduced the gain decayrate to 16.7%/mC, reflecting a decrease of 14.8% due tothe suppression of SEE degradations in dynodes D7-D9,which can be attributed to their lower average SEE coeffi-cients. Overall, the proposed strategy of differential voltagedistribution, characterized by higher voltages among ear-lier dynodes and lower voltages among latter dynodes,presents a novel and universal approach for optimizing thestructure of electron multipliers, addressing the need forhighly sensitive and reliable detection of ultraweak or evensingle charged particles.
Addresses:[Yang, Jishi; Li, Jie; Zhao, Wanru; Wang, Ruozheng; Zhao, Yuan; Hu, Wenbo; Wu, Shengli] Xi An Jiao Tong Univ, Sch Elect Sci & Engn, Key Lab Phys Elect & Devices, Minist Educ, Xian 710049, Peoples R China; [He, Li] Chinese Acad Sci, Inst Semicond, State Key Lab Superlatt & Microstruct, Beijing 100083, Peoples R China; [Tian, Jinshou] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Key Lab Ultrafast Photoelect Diagnost Technol, Xian 710119, Peoples R China
Affiliations:Xi'an Jiaotong University; Chinese Academy of Sciences; Institute of Semiconductors, CAS; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS
Publication Year:2025
Volume:72
Issue:1
Start Page:439
End Page:444
DOI Link:http://dx.doi.org/10.1109/TED.2024.3503536
數(shù)據(jù)庫ID（收錄號）:WOS:001372006100001
Record 30 of

Title:Bulk damage growth characteristics and ultrafast diagnosis of fluoride-containing phosphate glasses induced by 355-nm laser

Author Full Names:Li, Shengwu; Jiang, Yong; Wan, Rui; Wang, Pengfei
Source Title:OPTICS AND LASER TECHNOLOGY
Language:English
Document Type:Article
Keywords Plus:FUSED-SILICA OPTICS; BREAKDOWN; ABLATION
Abstract:To comprehensively reveal the influence regularity of different glass melting temperatures on the ultraviolet (UV) laser-induced damage resistance of fluoride-containing phosphate glasses, the initial bulk damage, damaged growth, and dynamic behaviors of both fundamental-frequency (1w) absorptive and third-harmonicfrequency (3w) transparent fluoride-containing phosphate glasses are explored utilizing the time-resolved pump-probe shadowgraph technique. A low-temperature (1000 degrees C) glass melting process resulted in an increase in the absorption coefficient at 355 nm and decrease in the optical bandgap for the 1w absorptive glass. The produced 1w absorptive glass was subjected to higher shock pressure and shock temperature on the rear surface after a single-pulse laser irradiation, and had a more serious filamentation damage accompanied by a funnel-shape morphology. With the subsequent multiples irradiation, the initial bulk damage area increased exponentially with a growth coefficient of 0.72. The corresponding exponential growth coefficient for the counterpart 1w absorptive glass melted at a high temperature (1200 degrees C) was only 0.32 due to its slight initial bulk damage. In contrast, for the 3w transparent glass, the high-temperature (1200 degrees C) melting process led to a larger initial bulk damage area and largest exponential growth coefficient of 0.91, 1.1 times that of the 3w transparent glass melted at a low temperature (1000 degrees C). They exhibited wave-packed damaged morphologies extending from the rear surface into the glass body. The melting temperatures exhibited the opposite influence regularity for these two investigated fluoride-containing phosphate glasses. The high-temperature (1200 degrees C) melting process favored the improvement in UV laser-induced damage resistance of the 1w absorptive glass, as evidenced by the higher UV laser-induced damage threshold and lower damage growth coefficient, while the low-temperature (1000 degrees C) melting process exerted similar effects on the 3w transparent glass.
Addresses:[Li, Shengwu; Wan, Rui; Wang, Pengfei] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China; [Li, Shengwu] Northwest Inst Nucl Technol, State Key Lab Laser Interact Matter, Xian 710024, Shaanxi, Peoples R China; [Jiang, Yong] Southwest Univ Sci & Technol, Sch Sci, Mianyang 621010, Peoples R China; [Jiang, Yong] Southwest Univ Sci & Technol, Joint Lab Extreme Condit Matter Properties, Mianyang 621010, Peoples R China
Affiliations:State Key Laboratory of Transient Optics & Photonics; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Northwest Institute of Nuclear Technology - China; Southwest University of Science & Technology - China; Southwest University of Science & Technology - China
Publication Year:2025
Volume:182
Article Number:112222
DOI Link:http://dx.doi.org/10.1016/j.optlastec.2024.112222
數(shù)據(jù)庫ID（收錄號）:WOS:001372118900001
Record 31 of

Title:2.6 GW, mJ-class high-energy femtosecond laser system based on Yb:YAG single-crystal fiber amplifier

Author Full Names:Cao, Xue; Li, Feng; Wang, Yishan; Zhao, Hualong; Zhao, Wei; Li, Qianglong; Xing, Jixin; Wen, Wenlong; Si, Jinhai
Source Title:INFRARED PHYSICS & TECHNOLOGY
Language:English
Document Type:Article
Keywords Plus:YB-DOPED FIBER; PEAK-POWER; PULSE; AMPLIFICATION; YB/YAG; FS; ABSORPTION; AVERAGE
Abstract:High-peak-intensity ultrafast fiber lasers show excellent prospect for ultrafast science and industrial applications. For simplicity as well as efficiency, chirped-pulse amplification (CPA) is an effective technique for the generation of high-energy sources and single crystal fiber (SCF) also shows great potential due to its convenient configuration. In this work, a high-peak-power hybrid CPA pulsed laser system based on a three-stage single-pass endpumped Yb:YAG SCF amplifier is experimentally demonstrated. The amplification system emitted pulses with the maximum power of 103.2 W at 100 kHz repetition rate and we obtained the compressed output power of 84.2 W, corresponding to the pulse energy of 0.84 mJ. Considering the third order dispersion that induced by the stretcher and the accurate tuning effect for higher-order dispersion compensation of chirped fiber Bragg grating, we have demonstrated a nearly transform limited output pulse duration of 323 fs with the peak power exceeding 2.6 GW. It can be said that we present the results for the first implementation of the shortest pulse duration and highest peak power in such multi-stage Yb:YAG SCF amplifier. The well-preserved beam quality with the measured M2 value of 1.22 and 1.29 for the horizontal and vertical directions at the maximum achieved average power. With such outstanding combined features, the demonstrated high-energy ultrafast fiber lasers would enable broad applications.
Addresses:[Cao, Xue; Li, Feng; Wang, Yishan; Zhao, Hualong; Zhao, Wei; Li, Qianglong; Xing, Jixin; Wen, Wenlong] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China; [Cao, Xue; Si, Jinhai] Xi An Jiao Tong Univ, Key Lab Phys Elect & Devices, Minist Educ, Xian 710049, Peoples R China; [Cao, Xue; Si, Jinhai] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Shaanxi Key Lab Informat Photon Tech, Xian 710049, Peoples R China; [Cao, Xue] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Affiliations:State Key Laboratory of Transient Optics & Photonics; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Xi'an Jiaotong University; Xi'an Jiaotong University; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
Publication Year:2025
Volume:144
Article Number:105643
DOI Link:http://dx.doi.org/10.1016/j.infrared.2024.105643
數(shù)據(jù)庫ID（收錄號）:WOS:001370534400001
Record 32 of

Title:Opto-mechanical-thermal integration design of the primary optical system for a tri-band aviation camera

Author Full Names:Zhang, Kailin; Pan, Yue; Xu, Xiping; Xu, Liang; Liu, Wancheng; Hu, Motong; Lu, Yi; Cao, Yajie
Source Title:MEASUREMENT
Language:English
Document Type:Article
Abstract:This paper presents a tri-band aviation camera that integrates short-wave infrared (SWIR, 0.9-1.7 mu m), mid-wave infrared (MWIR, 3.7-4.8 mu m) and visible (VIS, 0.486-0.656 mu m) bands into a primary optical system and three subsystems, to enhance optical remote sensing capabilities. The focus is on opto-mechanical-thermal integration to effectively manage thermal stress and minimise deformation. Finite Element Analysis is employed to extract Zernike coefficients for deformation analysis, facilitating a comprehensive assessment of the camera's performance across a temperature range of -40 degrees C to 60 degrees C. An innovative flexible support system is integrated to maintain the optimal surface figure of the primary mirror, further reducing thermal effects. Extensive empirical testing, including resolution and wavefront error detection, has validated the system's robustness under various thermal conditions.
Addresses:[Zhang, Kailin; Pan, Yue; Xu, Xiping; Hu, Motong; Lu, Yi; Cao, Yajie] Changchun Univ Sci & Technol, 7186 Weixing Rd, Changchun 130022, Jilin, Peoples R China; [Xu, Liang] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Shaanxi, Peoples R China; [Liu, Wancheng] Natl Key Lab Electromagnet Space Secur, Jiaxing, Peoples R China
Affiliations:Changchun University of Science & Technology; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS
Publication Year:2025
Volume:242
Article Number:116319
DOI Link:http://dx.doi.org/10.1016/j.measurement.2024.116319
數(shù)據(jù)庫ID（收錄號）:WOS:001371550200001
Record 33 of

Title:A data processing method for multispectral emissivity and temperature with the introduction of new objective function and nonlinear constraints

Author Full Names:Yang, Longjie; Bai, Yonglin; Zheng, Jinkun; Wang, Bo
Source Title:OPTICS COMMUNICATIONS
Language:English
Document Type:Article
Keywords Plus:RADIATION; ALGORITHM; OPTIMIZATION; SURFACES
Abstract:The underdetermined equation in multispectral pyrometer temperature measurement involves simultaneous unknowns of emissivity and temperature, posing a challenging obstacle to achieving accurate temperature inversion. In recent years, constrained optimization algorithms have been increasingly employed to address this issue. However, these algorithms need to set the appropriate initial emissivity values in particular and the imposition of manual constraints on the search range for emissivity. In this paper, a new data processing method that does not require these artificial Settings is proposed. Our method incorporates new objective functions and nonlinear constraints into the inversion of multispectral emissivity and temperature, while employing the Barrier Function Interior Point Method as an optimization tool. In addition, it has to be mentioned that in the blackbody temperature setting of the reference temperature model, the temperature of the blackbody is set very close to the target temperature by the constrained optimization algorithm, which obviously does not meet the needs of large-scale temperature measurement. The data processing method proposed in this paper addresses situations where there is a significant difference between the blackbody set temperature and the target temperature, ensuring both accuracy and speed over a wide range. Experiments demonstrate that our proposed method achieves a relative error of less than 0.42% in emissivity inversion, less than 0.57% in temperature inversion, and a calculation time of under 0.2 s. Our method can be applied to some high-precision and fast temperature measurement occasions that require short processing time and small relative error.
Addresses:[Yang, Longjie; Bai, Yonglin; Zheng, Jinkun; Wang, Bo] Chinese Acad Sci, Xian Inst Opt & Precis Mech, 17 Informat Ave, Xian 710119, Peoples R China; [Yang, Longjie] Univ Chinese Acad Sci, 1 Yanqihu East Rd, Beijing 101408, Peoples R China
Affiliations:Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
Publication Year:2025
Volume:576
Article Number:131311
DOI Link:http://dx.doi.org/10.1016/j.optcom.2024.131311
數(shù)據(jù)庫ID（收錄號）:WOS:001371932100001
Record 34 of

Title:Soliton patterns recognition and searching from a 2 μm intelligent mode-locked fiber laser agent

Author Full Names:Yao, Tianchen; Qi, Liwen; Zheng, Fangfang; Zhou, Wei; Kang, Hui; Zhu, Qiang; Song, Xiaozhao; Liu, Guangmiao; Xu, Shengzhou; Zhang, Qianwei; Wang, Haotian; Wang, Fei; Wang, Yishan; Jia, Baohua; Shen, Deyuan
Source Title:OPTICS AND LASER TECHNOLOGY
Language:English
Document Type:Article
Abstract:The negative dispersion of silica fibers near 2 mu m wavelength leads to formations of attractive soliton-patterns in Thulium-doped mode-locked fiber lasers (TDMLFL), including single-solitons(SS), bound-solitons(BS), multisolitons(MS), soliton molecules(SM), as well as noise-like pulses(NLP). However, the current manual or physically controlled methods cannot accurately identify and quickly adjust the diverse solitons. Here, we successfully realized the fine identification and automatic searching of continuous waves, Q-switching, noise-like pulses, multi-solitons, and single-solitons by constructing a genetic algorithm based self-tuning pump power and time- spectrum feedback agent in a TDMLFL. The searched SS have a duration of 1.269 ps, a central wavelength of 1966 nm and a typical Kelly-sideband spectrum. The minimum consuming time of globally finding a singlesoliton is-40 mins, and the corresponding recovery-time is-2 mins. To the best of our knowledge, this is the first time that an intelligent searching and recognition of single soliton in 2 mu m TDMLFL and also the first report of soliton-patterns fully intelligent identification and searching without prior parameters in soliton mode locked fiber lasers.
Addresses:[Yao, Tianchen; Qi, Liwen; Zheng, Fangfang; Zhou, Wei; Kang, Hui; Zhu, Qiang; Song, Xiaozhao; Liu, Guangmiao; Xu, Shengzhou; Zhang, Qianwei; Wang, Haotian; Shen, Deyuan] Jiangsu Normal Univ, Sch Phys & Elect Engn, Jiangsu Key Lab Adv Laser Mat & Devices, Xuzhou 221116, Peoples R China; [Yao, Tianchen; Zhou, Wei; Kang, Hui; Zhu, Qiang; Song, Xiaozhao; Liu, Guangmiao; Wang, Fei; Shen, Deyuan] Jiangsu Inst Mid Infrared Laser Technol & Applicat, Xuzhou 221000, Peoples R China; [Wang, Yishan] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China; [Jia, Baohua] RMIT Univ, Australian Res Council ARC, Ind Transformat Training Ctr Surface Engn Adv Mat, Melbourne, Vic 3000, Australia
Affiliations:Jiangsu Normal University; State Key Laboratory of Transient Optics & Photonics; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Royal Melbourne Institute of Technology (RMIT)
Publication Year:2025
Volume:182
Article Number:112125
DOI Link:http://dx.doi.org/10.1016/j.optlastec.2024.112125
數(shù)據(jù)庫ID（收錄號）:WOS:001358702400001
Record 35 of

Title:Fluorescence temperature dependent behaviors of Eu3+/Mn4+co-doping cubic and hexagonal ZnO-TiO2 compounds: Application in high sensitive optical thermometers

Author Full Names:Sun, Chengmei; Xu, Chengcheng; Ren, Wenzhen; Hu, Fengya; Yuan, Jun; Wang, Qingru; Xie, Yanru; Wang, Kai; Zhang, Dong
Source Title:JOURNAL OF ALLOYS AND COMPOUNDS
Language:English
Document Type:Article
Keywords Plus:PHOTOLUMINESCENCE PROPERTIES; CRYSTAL-STRUCTURE; POTENTIAL APPLICATION; HIGH-PRESSURE; RED PHOSPHOR; ZNTIO3; EMISSION; STABILITY; PROPERTY; SPECTRA
Abstract:ZnTiO3:Eu3+,Mn4+ phosphors with hexagonal and cubic structure are synthesized by solvothermal method. The structure of ZnTiO3 depends on precursors and the annealing temperature. Inverse spinel Zn2TiO4 phase reveals the highest thermostability compared with cubic ZnTiO3 and hexagonal ZnTiO3 phases. The different phases of ZnTiO3 crystals exhibit different photoluminescence properties. The forbidden transition of 4A2g -> 2T2g for Mn4+ is observed in Zn2TiO4 and hexagonal ZnTiO3 (h-ZnTiO3) due to the decreased symmetry. The zero photon line (ZPL) assigned to 2Eg -> 4A2g transition of Mn4+ is absent in all type ZnTiO3 phases. A sharp emission peak at 714 nm assigned to nu 6 (Stokes emission) mode of Mn4+ in h-ZnTiO3 is present when the temperature was below 270 K, and increases sharply in intensity with the temperature decreasing. The similar PL spectra of cubic ZnTiO3 and Zn2TiO4 co-doped with Eu3+ and Mn4+ show a wide emission band composed of Stokes and anti-Stokes modes. The calculated nephelauxetic parameter increases from 0.84 to 1.03 and 1.18 for Mn4+ in h-ZnTiO3, cubic ZnTiO3 and Zn2TiO4, respectively, indicating the covalency decreasing, which causes the red shift of ZPL in h-ZnTiO3. The Mn4+ emissions show stronger temperature dependence than that of Eu3+, especially for that in hZnTiO3 matrix. Based on the fluorescence intensity ratio between I Eu 3+ and I Mn4+ , the highest relative temperature sensitivity of 2.46 %K- 1 is observed in cubic ZnTiO3 (c-ZnTiO3) and Zn2TiO4. Under the excitation at 550 nm, the highest relative sensitivity of 2.9 %K- 1 is achieved in c- and h-ZnTiO3 mixed phases.
Addresses:[Sun, Chengmei; Xu, Chengcheng; Hu, Fengya; Yuan, Jun; Wang, Qingru; Xie, Yanru; Wang, Kai; Zhang, Dong] Liaocheng Univ, Sch Phys Sci & Informat Technol, Shandong Key Lab Opt Commun Sci & Technol, Liaocheng 252059, Peoples R China; [Ren, Wenzhen] Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China
Affiliations:Liaocheng University; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; State Key Laboratory of Transient Optics & Photonics
Publication Year:2025
Volume:1010
Article Number:177374
DOI Link:http://dx.doi.org/10.1016/j.jallcom.2024.177374
數(shù)據(jù)庫ID（收錄號）:WOS:001357057400001
Record 36 of

Title:X-ray communication system with high-repetition-rate pulsed X-ray source and LYSO(Ce) and YAP(Ce) scintillators

Author Full Names:Li, Yun; Su, Tong; Sheng, Lizhi; Zhang, Ruili; Chen, Junfeng; Wang, Bo; Qiang, Pengfei
Source Title:NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Language:English
Document Type:Article
Abstract:X-ray communication offers significant advantages over traditional microwave methods due to its shorter wavelength and higher theoretical bandwidth, enabling efficient space communication and penetration through complex electromagnetic environments. However, current systems face limitations in X-ray emission modulation and high-precision timing detection. To meet the high-frequency transmission demands of space missions, we developed a pulsed X-ray emission source capable of high-frequency modulation. Additionally, we identified specific scintillators with distinct advantages for different transmission frequency ranges, allowing for performance optimization. Experimental results demonstrated a successful transmission rate of 10 MHz, validating the feasibility of MHz-frequency X-ray communication.
Addresses:[Li, Yun; Su, Tong; Sheng, Lizhi; Zhang, Ruili; Wang, Bo; Qiang, Pengfei] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transients Opt & Photon, Xian 710119, Peoples R China; [Li, Yun] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Chen, Junfeng] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 201899, Peoples R China
Affiliations:Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Chinese Academy of Sciences; Shanghai Institute of Ceramics, CAS
Publication Year:2025
Volume:1070
Article Number:170022
DOI Link:http://dx.doi.org/10.1016/j.nima.2024.170022
數(shù)據(jù)庫ID（收錄號）:WOS:001356647400001