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Strong Kerr electro-optic effects in PMN-PT single crystal with low composition by Sm doping

Ceramics International 2025年

作者： Wang, Hongwei He, Chongjun Deng, Chenguang Chen, Ziyun Chen, Hongbing Chen, Fangzhou Zha, Jiahao Dong, Biao Liu, Lijuan Xia, Mingjun Li, Qian Lu, Yuangang Key Laboratory of Space Photoelectric Detection and Perception in Ministry of Industry and Information Technology College of Astronautics Nanjing University of Aeronautics and Astronautics 29 Jiangjun Road Nanjing211106 China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing100084 China School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai200240 China School of Materials Science and Chemical Engineering Ningbo University Ningbo315211 China Beijing Center for Crystal Research and Development Key Laboratory of Functional Crystals and Laser Technology Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing100190 China

Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-xPT) single crystal has been applied in many fields due to its excellent piezoelectric properties, but the optical properties remains to be explored. Here, the rhombohedral phase PMN-0.15 PT and 1 % Sm doped PMN-0.15 PT single crystal (Sm-PMN-0.15 PT) were grown by the Bridgman method. The crystal structure was investigated by X-ray diffraction, HRTEM, Raman spectra and second harmonic generation (SHG) microscopy. Combined with the characterization of dielectric, ferroelectric and electro-optic effects, we revealed the dynamic response of polar nanoregions (PNR) and phase transition to the electro-optic properties of crystals. The results demonstrate that the doping of Sm3+ ions can effectively reduce the Curie temperature (Tm) from 57 °C to 38 °C while maintaining high dielectric response characteristics. The Kerr electro-optic coefficient of PMN-0.15 PT and Sm-PMN-0.15 PT can reach 2.55 × 10−16 m2/V2 at 48 °C and 3.40 × 10−16 m2/V2 around 38 °C respectively. Due to the influence of PNR, the peak value of the Kerr electro-optical coefficient measured in the cooling process is higher than that measured in the heating process. The Sm-PMN-0.15 PT has a wide operating temperature range close to room temperature and stable response of frequency, rendering it promising candidate for application in electro-optic devices. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Kerr electrooptical effect

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Stable single-photon detection based on Si-avalanche photodiode in a large temperature variation range

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Optoelectronics Letters 2015年第5期11卷 321-324页

作者：颜佩琴李召辉师亚帆冯百成杜秉乘杜艳伟潭天乐吴光 State Key Laboratory of Precision Spectroscopy East China Normal University Shanghai Institute of Aerospace Control Technology China Aerospace Science and Technology Corporation Infrared Exploration Technology Research and Development Center

In this paper, we present a stable single-photon detection method based on Si-avalanche photodiode(Si-APD) operating in Geiger mode with a large temperature variation range. By accurate temperature sensing and direct current(DC) bias voltage compensation, the single-photon detector can work stably in Geiger mode from-40 °C to 35 °C with an almost constant avalanche gain. It provides a solution for single-photon detection at outdoor operation in all-weather conditions.

关键词： photodiode photon weather compensation fitting outdoor tempera illumination stabilize amplifier

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Effects of different passivation and etching methods on the dark current of InAs/GaSb long-wave detectors 8

Effects of different passivation and etching methods on the ...

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8th Symposium on Novel Photoelectronic detection technology and Applications

作者： Ji, Zhenming Zhu, Xubo He, Yingjie Cui, Ailiang Wei, Peng Lyu, Yanqiu Luoyang Optoelectro Technology Development Center Luoyang471099 China Aviation Key Laboratory of Science and Technology on Infrared Detector Luoyang471099 China The Engineering Center for Antimonide-Based Infrared Detector Research of Henan Province Luoyang471099 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

The InAs/GaSb superlattice infrared detectors have attracted more and more attention due to they have the properties of adjustable energy band, high uniformity, low Auger recombination, tunneling current, and high quantum efficiency. At present, it is widely used in the preparation of long-wave infrared detectors. This paper studies the effects of different passivation methods on device performance. The dark current density of the device which uses silicon nitride film as the passivation layer can be reduced to 5.01×10-5A/cm2, and its maximum impedance can reach 421 O·cm2, then we used energy band theory to explain the reason for this phenomenon. We believe that the occurrence of this phenomenon is related to the wider band gap of nitride, because the wider forbidden band can suppress the generation of surface leakage current, thereby reducing the dark current density and improving the performance of the device. © 2022 SPIE

关键词： Passivation

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Preparation and etching of the mask of the type II superlattice for Focal Plane Arrays 8

Preparation and etching of the mask of the type II superlatt...

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8th Symposium on Novel Photoelectronic detection technology and Applications

作者： Wen, Wang Dongying, Wu Xubo, Zhu Fei, Tao Yanqiu, Lv Luoyang Optoelectro Technology Development Center Luoyang471099 China Aviation Key Laboratory of Science and Technology on Infrared Detector Luoyang471099 China The Engineering Center for Antimonide-based Infrared Detector Research of Henan Province Luoyang471099 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

In the research of the InAs/GaSb type II superlattice, MW/SW?MW/LW?MW/MW two color superlattice infrared focal detector has been developed abroad[1]. In this paper, we study the uniformity, compactness and etching resisrance of the mask prepared by PECVD. It has been proved that dry etching can satisfied the superlattice material etching depth by experiment [2]. When the experimental condition is that the CH4:H2:Cl2:Ar flow ratio is 8:15:6:15, ICP power is 400 W, and the reaction pressure is 1.0 Pa,it can be etched to the requirements of two-color superlattice depth with clear?flat mesa and no residual generation[3]. The experiment optimizes the etching technology of two-color superlattice material, and the etching result meets the requirements of the etching depth and quality of the two-color superlattice chip. © 2022 SPIE

关键词： Dry etching

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Optimization of Corrosion Process after Diffusion in InSb 8

Optimization of Corrosion Process after Diffusion in InSb

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8th Symposium on Novel Photoelectronic detection technology and Applications

作者： Zhou, Xiaoqian Wei, Peng Wang, Haizhen Lyu, Yanqiu Luoyang Optoelectro Technology Development Center Luoyang471099 China Aviation Key Laboratory of Science and Technology on Infrared Detector Luoyang471099 China The Engineering Center for Antimonide-Based Infrared Detector Research of Henan Province Luoyang471099 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

The surface contamination and the complexity of the process seriously restrict the development of InSb detector. The corrosion rates of wafers from different diffusion batches and different crystal in different batches of corrosive liquid were studied to determine a stable corrosion time by depth testing. The research shows that the high concentration on the surface can be removed once by controlling the corrosion time to realize the optimization of the corrosion process after diffusion. Through the surface analysis, the current-voltage and imaging characterization analysis, this method can effectively remove the stress on the wafer surface and the wafer damage in the process of diffusion. This optimized method can not only raise the process efficiency, but also greatly promote the surface quality of InSb. The contamination and residue on the surface will be reduced, and thus the performance of the detector will be improved. © 2022 SPIE

关键词： Diffusion

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Modeling of thermal stresses in passivation layers of InSb infrared detector 8

Modeling of thermal stresses in passivation layers of InSb i...

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8th Symposium on Novel Photoelectronic detection technology and Applications

作者： Wu, Dongying Liu, Wei Wang, Wen Lyu, Yanqiu Luoyang Optoelectro Technology Development Center Luoyang471099 China Aviation Key Laboratory of Science and Technology on Infrared Detector Luoyang471099 China The Engineering Center for Antimonide-based Infrared Detector Research of Henan Province Luoyang471099 China

ISBN: (数字)9781510653122

ISBN: (纸本)9781510653115

Due to a big difference between the temperature of the passivation film preparation and the temperature when the device is used, the stress will appear in the layers, and the existence of stress will affect the spectral performance of the InSb infrared detector. SiO2 or SiNx passivation film for the InSb device is prepared at 130 °C and is used at 77K, which the stress is seriously affect the device performance due to the mismatch. We simulate the stress between different thickness of SiO2 and SiNx single-layer, SiO2/SiNx double-layer and SiO2/SiNx/SiO2/SiNx multilayer passivation films on the InSb substrate. The bending strain of the SiO2/SiNx double-layer passivation films is the smallest. Combined the formula of infrared transmittance, we get less strain when the single-layer SiO2 thickness is 0.78 µm or the single-layer SiNx thickness is 0.54 µm. When the thicknesses of SiO2 and SiNx are 0.1 µm and 0.42µm respectively for the double-layer passivation film system, the external transmittance is the largest and the strain is smallest. © 2022 SPIE

关键词： Passivation

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research on a radiative correction method for the division of focal plane polarization in mid-infrared imaging system 6

Research on a radiative correction method for the division o...

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6th Conference on Frontiers in Optical Imaging and technology: Novel Detector Technologies

作者： Sun, Zunyi Long, Huabao Zhang, Xiaojie Tao, Xiao Zhu, Haolin Shanghai Aerospace Control Technology Institute 1555 Zhongchun Road Minhang District Shanghai201101 China Infrared Dection Technology Research & Development Center of CASC

ISBN: (数字)9781510679696

ISBN: (纸本)9781510679689

In recent years, infrared thermal polarization imaging technology has emerged as a new method of infrared detection. Its main objective is to detect, identify, and track the differences in infrared polarization characteristics between targets and scenes. Compared to ordinary infrared imaging systems, this technology offers significant advantages for detecting and identifying man-made targets in complex natural backgrounds. Specifically, the division of focal plane (DoFP) polarimeter is currently being extensively researched due to its compact structure, small volume, and real-time imaging capabilities. However, the focal plane array (FPA) of the DoFP polarimeter exhibits varying response gains and bias parameters, while the micro-polarizer array on its surface suffers manufacturing defects, resulting in significant non-uniformity errors that adversely affect resolution accuracy. This paper analyzes the mechanism behind the generation of non-uniformity in the DoFP polarization imaging system and establishes a relationship between the output grayscale of the system and incident irradiance. Additionally, through the use of a mid-infrared polarization radiation source, the proposed method conducts irradiation calibration and polarization parameter calibration to rectify the non-uniformity of the detection image of the system. Based on experimental results, the calibration model significantly enhances the accuracy of polarization detection information for scene targets. © 2024 SPIE.

关键词： Imaging systems

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infrared and visual image fusion via multi-modal decomposition and PCNN in gradient domain fusion measure 2nd

Infrared and visual image fusion via multi-modal decompositi...

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2nd International Conference on Smart Multimedia, ICSM 2019

作者： Tan, Wei Zhang, Jiajia Qian, Kun Du, Juan Xiang, Pei Zhou, Huixin School of Physics and Optoelectronic Engineering Xidian University Xi’an710071 China Department of Computer Science University of Copenhagen Copenhagen2100 Denmark Shanghai Institute of Spaceflight Control Technology Shanghai201109 China Infrared Detection Technology Research and Development Center of CASC Shanghai201109 China

ISBN: (纸本)9783030544065

infrared and visual image fusion aims to obtain a complex image which contains more recognizable information. To obtain the complex image, a fusion algorithm via multi-modal decomposition and pulse-coupled neural network (PCNN) in gradient domain fusion measure is proposed. Firstly, the source images are decomposed into three layers through the decomposition model. Then, a gradient domain PCNN fusion measure is employed in the three layers. Finally, the fused image is reconstructed through the three fused layers. Experimental results demonstrate that the proposed algorithm performs effectively in both qualitative and quantitative measures. © Springer Nature Switzerland AG 2020.

关键词： Image fusion

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Influence of interface types on the flexural performance of FRP-concrete composite beams 6

Influence of interface types on the flexural performance of ...

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6th Asia-Pacific Conference on FRP in Structures, APFIS 2017

作者： Pu, Zhang Sen, Yang Gang, Chen Jun, Zhao Huana, Liu Guobin, Tang Zhengzhou University Zhengzhou45002 China Henan Transportation Research Institute CO. LTD China Research and Development Center on Bridge Safety Detection and Reinforcement Technology Ministry of Transport China

FRP-concrete composite structure is a kind of light-weight hybrid structure with high durability. The flexural test of 7 FRP profile-concrete composite beams was conducted to investigate the influence of interface types on the flexural performance of beams. The interface types between FRP profile and concrete include wet-bond interface, shear key interface, and shear key combined with wet-bond interface. Three types of failure modes were occurred in this test: shear failure of FRP-concrete interface, longitudinal shear failure of FRP profile web, and bulking failure of FRP profile web. The failure process of the specimen was described. Meanwhile, the ultimate capacity loads and flexural stiffness of different members were compared. Results show that the interface type can significantly influence the flexural performance of FRP profile-concrete composite beams. And the shear capacity of the web of FRP profile needs to be improved in order to further study the failure load of the interfaces. © 2017 APFIS. All rights reserved.

关键词： Composite beams and girders

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DIM MOVING TARGET detection USING SPATIO-TEMPORAL ANOMALY detection FOR HYPERSPECTRAL IMAGE SEQUENCES

DIM MOVING TARGET DETECTION USING SPATIO-TEMPORAL ANOMALY DE...

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IEEE International Geoscience and Remote Sensing Symposium

作者： Yang Li Jinshen Wang Xiang Liu Ning Xian Changsheng Xie Image Processing Center Beihang University Beijing China School of Automation Science and Electrical Engineering Beihang University Infrared Detection Technology Research & Development Center CASC

Dim moving target detection from hyperspectral image sequences, which contains temporal information as well as spectral information, has attracted researchers' interest for its crucial role in civil and military application. In this paper, we propose a novel spatio-temporal anomaly approach to solve the dim moving target detection problem. This approach calculates spatial anomaly map, temporal anomaly map using anomaly detection algorithm from spatial domain and temporal domain, respectively. To achieve motion consistency characteristic, this approach manages to generate the trajectory prediction map. After fusing the spatial anomaly map, the temporal anomaly map and the trajectory prediction map, target of interest can be easily detected from background. The proposed approach is applied to a test dataset of airborne target in the cloud clutter background. Experimental results confirm that the proposed approach can achieve a low false alarm rate as well as a high probability of detection.

关键词： Hyperspectral imaging Object detection Image sequences Trajectory Anomaly detection Principal component analysis

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