2025

• Record 1 of
  
  Title:Enhancement of weak optical signal detection based on phase-sensitive amplification
  
  Author Full Names:Zhang, Changchang; Wang, Zhaolu; Shi, Wenjuan; Zhang, Congfu; Gao, Ke; Liu, Hongjun; Huang, Nan

  Source Title:OPTICS AND LASER TECHNOLOGY

  Language:English

  Document Type:Article

  Keywords Plus:QUANTUM-NOISE; PARAMETRIC AMPLIFICATION; LIMITS

  Abstract:Phase-sensitive amplification (PSA) performs crucial roles in quantum information processing and optical communications with its noiseless amplification characteristics. To advance its application in the area of weak signal detection. We experimentally demonstrate a weak signal detection strategy below detector limit by employing a phase-sensitive amplifier. We show that PSA can effectively detect weak signals with intensity lower than the detector limit. When the phase sensitive gain is 14.3 dB and the detection efficiency of the detector is 0.69, the signal-to-noise ratio (SNR) is improved from <0 dB to 6.2 dB, which is 1.55 dB higher than that of the phase-insensitive amplification (PIA) mode under the action of the same intensity pump field.

  Addresses:[Zhang, Changchang; Wang, Zhaolu; Shi, Wenjuan; Zhang, Congfu; Gao, Ke; Liu, Hongjun; Huang, Nan] Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China; [Liu, Hongjun] Shanxi Univ, Collabotat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China; [Zhang, Changchang; Shi, Wenjuan; Zhang, Congfu; Gao, Ke] Univ Chinese Acad Sci, Beijing 100084, Peoples R China

  Affiliations:Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; State Key Laboratory of Transient Optics & Photonics; Shanxi University; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS

  Publication Year:2025

  Volume:184

  Article Number:112467

  DOI Link:http://dx.doi.org/10.1016/j.optlastec.2025.112467

  数据库ID（收录号）:WOS:001405199700001
• Record 2 of
  
  Title:High-performance microchannel plates based on atomic layer deposition for the preparation of functional layers
  
  Author Full Names:Lian, Zhuoxi; Wang, Dan; Zhu, Xiangping; He, Yongning

  Source Title:JOURNAL OF PHYSICS D-APPLIED PHYSICS

  Language:English

  Document Type:Article

  Keywords Plus:LIFETIME

  Abstract:Microchannel plates (MCPs) are critical devices used in electron multiplication for applications such as night vision, mass spectrometry, and particle detection. Traditional MCP fabrication using lead silicate glass faces challenges in meeting the increasing demands for high gain, long lifespan, and low noise. In this study, pursuing MCP with excellent performance, atomic layer deposition (ALD) technology was employed to prepare Ru/Al2O3 composite film and Al2O3 film as the conductive layer and secondary electron emission (SEE) layer respectively in microchannels. By optimizing the ALD cycle ratio of Ru and Al2O3, process parameters that satisfy the MCP bulk resistance requirements were obtained. As the number of ALD cycles for Ru increases, the bulk resistance decreases, enabling the regulation of bulk resistance within the range of tens to hundreds of megaohms. The variation of the secondary electron yield of Al2O3 film with increasing thickness was investigated, and a preferable thickness of 5-7 nm was obtained. When the ALD cycle ratio of Ru to Al2O3 in the conductive layer is 29:10 and the thickness of the Al2O3 film in the SEE layer is 7 nm, the gain of the fabricated MCP exceeds 3 x 105 at a bias voltage of 1500 V. As well as the fabricated MCP also exhibits excellent uniformity and stability in electron multiplication. Additionally, a GaAs image intensifier utilizing the prepared MCP exhibited superior performance in field-of-view uniformity, low-light imaging, and resolution. This study makes significant engineering sense for enhancing MCP performance and expanding its applications in imaging and related fields.

  Addresses:[Lian, Zhuoxi; Wang, Dan; He, Yongning] Xi An Jiao Tong Univ, Sch Microelect, Xian 710049, Peoples R China; [Zhu, Xiangping] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China; [Zhu, Xiangping] ZhongKe Atom Precise Mfg Technol Co Ltd, Xian 710119, Peoples R China

  Affiliations:Xi'an Jiaotong University; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS

  Publication Year:2025

  Volume:58

  Issue:11

  Article Number:115106

  DOI Link:http://dx.doi.org/10.1088/1361-6463/ada80a

  数据库ID（收录号）:WOS:001400686700001
• Record 3 of
  
  Title:A new dual-channel transformer-based network for remaining useful life prediction
  
  Author Full Names:Yang, Kai; Wei, Yuxuan; Ma, Yubao; Huang, Lehong; Tang, Qiang; Li, Zhiguo

  Source Title:MEASUREMENT SCIENCE AND TECHNOLOGY

  Language:English

  Document Type:Article

  Keywords Plus:RECURRENT NEURAL-NETWORK; PROGNOSTICS

  Abstract:Remaining useful life (RUL) prediction is crucial for enhancing the reliability of complex systems, preventing unexpected failures, and reducing the maintenance costs of electromechanical systems. Data-driven methods, particularly deep learning, have been extensively applied in RUL prediction. However, recent methods have focused solely on long-term features, neglecting the significant role of short-term features in long sequence processes, which leads to an inability to achieve high-precision RUL prediction. In this article, a novel dual-channel network is proposed, which is based on the transformer encoder. Additionally, the approach proposes a robust dual-channel feature extraction layer that integrates a multi-scale convolution block and a gating convolution block. This integrated system is capable of capturing both long-term and short-term features from the raw data simultaneously. Compared to convolutional neural networks, recurrent neural networks and other transformer-based methods, the proposed method is more effective at extracting profound features and focusing on important information in the input. Utilizing the self-attention mechanism, the proposed model captures degradation features and achieves precise RUL prediction. Experiments conducted on the CMAPSS dataset demonstrate that the proposed method outperforms recent RUL prediction methods. The average root mean square error of the proposed method is reduced by 6.8%, and the average score is reduced by 8.5%, proving the effectiveness of the proposed approach.

  Addresses:[Yang, Kai; Wei, Yuxuan; Ma, Yubao; Huang, Lehong; Tang, Qiang; Li, Zhiguo] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian, Shaanxi, Peoples R China; [Yang, Kai] Univ Chinese Acad Sci, Beijing, Peoples R China; [Li, Zhiguo] Chinese Acad Sci, Key Lab Space Precis Measurement Technol, Xian, Shaanxi, 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

  Publication Year:2025

  Volume:36

  Issue:2

  Article Number:26119

  DOI Link:http://dx.doi.org/10.1088/1361-6501/ad9e12

  数据库ID（收录号）:WOS:001394229200001
• Record 4 of
  
  Title:150 MHz, All-Polarization-Maintaining Fiber Integrated Figure-9 Femtosecond Laser
  
  Author Full Names:Cheng, Haihao; Zhang, Zhao; Hu, Xiaohong; Zhang, Ting; Pan, Ran; Jia, Jing; Wang, Yishan; Wu, Shun

  Source Title:IEEE PHOTONICS TECHNOLOGY LETTERS

  Language:English

  Document Type:Article

  Keywords Plus:FREQUENCY COMBS; YBFIBER LASER

  Abstract:We accomplish a compact 150-MHz figure-9 Er:fiber laser through the use of a hybrid device of wavelength division multiplexer and phase shifter. By combining the time-independent rate equation and nonlinear Schr & ouml;dinger equation, evolution of the intracavity field towards stable mode locking state is presented. We further quantify the output characteristics of the 150-MHz figure-9 laser. Explicitly, 5.8-mW average power, center wavelength of 1561.2 nm and 3-dB spectral bandwidth of 29.2 nm are obtained. More importantly, an integrated root-mean-square relative intensity noise of 0.0016% [1 Hz, 1 MHz] and 75.8 fs timing jitter [100 Hz, 1 MHz] are measured at the fundamental repetition rate. Moreover, by referencing to a stable radio frequency, the fundamental repetition rate is locked with an in-loop relative instability of 2.78x10(-12) at 1-s gate time.

  Addresses:[Cheng, Haihao; Zhang, Zhao; Hu, Xiaohong; Zhang, Ting; Pan, Ran; Jia, Jing; Wang, Yishan] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China; [Cheng, Haihao; Zhang, Zhao; Hu, Xiaohong; Zhang, Ting; Pan, Ran; Jia, Jing; Wang, Yishan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wu, Shun] Wuhan Inst Technol, Hubei Key Lab Opt Informat & Pattern Recognit, Wuhan 430205, Peoples R China

  Affiliations:Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; State Key Laboratory of Transient Optics & Photonics; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Wuhan Institute of Technology

  Publication Year:2025

  Volume:37

  Issue:3

  Start Page:165

  End Page:168

  DOI Link:http://dx.doi.org/10.1109/LPT.2024.3523958

  数据库ID（收录号）:WOS:001395305200001
• Record 5 of
  
  Title:Atomic coherence-induced non-Hermitian control of multimode EPR steering from cascading four-wave mixing
  
  Author Full Names:Qin, Wenqiang; Yan, Jin; Zhao, Wenjing; Bai, Yonglin; Li, Feng; Zhang, Yanpeng; Cai, Yin

  Source Title:JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

  Language:English

  Document Type:Article

  Keywords Plus:PARITY-TIME SYMMETRY; ENTANGLEMENT; LASER

  Abstract:Einstein-Podolsky-Rosen (EPR) steering is a type of directional quantum correlation that holds immense significance and broad applications in quantum information processing. While EPR steering has been achieved across various physical systems, research into its implementation in non-Hermitian systems remains in its early stages. In this study, we delve into the realm of non-Hermitian control of EPR steering by leveraging atomic coherence- controlled energy-level cascaded four-wave mixing (ELC-FWM) processes. We derive analytical expressions for the generation of EPR steering within such non-Hermitian nonlinear systems, demonstrating that exceptional points (EPs) and multimode EPR steering can be realized through introducing dressing-control fields. Furthermore, we illustrate that nonlinear coherent channels and the associated steerability distribution of the output modes can be tailored during the EPR steering generation process, which is directly linked to the eigenvalues of non-Hermitian processes. Additionally, we analyze the impact of loss effects on generated multimode EPR steering. Our findings suggest that non-Hermitian control offers a promising all-optical approach for constructing practical quantum networks. (c) 2025 Optica Publishing Group. All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.

  Addresses:[Qin, Wenqiang; Yan, Jin; Zhao, Wenjing; Li, Feng; Zhang, Yanpeng; Cai, Yin] 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; [Qin, Wenqiang; Bai, Yonglin] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Key Lab Ultrafast Photoelect Diagnost Technol, CAS, Xian 710119, Peoples R China; [Qin, Wenqiang; Bai, Yonglin] 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:42

  Issue:2

  Start Page:233

  End Page:242

  DOI Link:http://dx.doi.org/10.1364/JOSAB.540311

  数据库ID（收录号）:WOS:001405145400005
• Record 6 of
  
  Title:Inhibition of platelet activation alleviates diabetes-associated cognitive dysfunction via attenuating blood-brain barrier injury
  
  Author Full Names:Xu, Fuxing; Hu, Juan; Li, Xuying; Yang, Lan; Jiang, Shiqiu; Jiang, Tao; Cheng, Bo; Du, Hailiang; Wang, Ruiduo; Deng, Yingying; Gao, Wei; Li, Yansong; Zhu, Yaomin

  Source Title:BRAIN RESEARCH BULLETIN

  Language:English

  Document Type:Article

  Keywords Plus:CD40 LIGAND; UP-REGULATION; CILOSTAZOL; MELLITUS; MICE; HYPERGLYCEMIA; INFLAMMATION; DISRUPTION; IMPAIRMENT; PROTEINS

  Abstract:Cognitive dysfunction has become the second leading cause of death among the diabetic patients. In pre-diabetic stage, blood-brain barrier (BBB) injury occurs and induced the microvascular complications of diabetes, especially, diabetes-associated cognitive dysfunction (DACD). Endothelial cells are the major component of BBB, on which the increased expression of CD40 could mediate BBB dysfunction in diabetics. Since platelets play an important role in regulating endothelial cell barrier function and over 95 % of the circulating soluble CD40 ligand (sCD40L) is derived from activated platelets, we speculated that the release of CD40L from activated platelets induced by diabetes was the key mechanism that aggravated BBB injury and leaded to DACD. We performed inhibition of platelet activation on diabetic and non-diabetic mice, with or without cilostazol treatment, and then compared cognitive function, platelet activation, BBB structure and permeability. In vitro, mouse brain microvascular endothelial cell line (b.End3) were exposed to CD40L for 24 h at 5.5 mM or 30 mM glucose media after silencing CD40 and HIF1 alpha or not to investigate the effects of CD40 on BBB disruption and the underlying molecular pathways. Inhibition of platelet activation improved cognitive behaviors in diabetic mice, accompanied with reduced BBB permeability, increased tight junction proteins, balanced A(3 transporters, as well as attenuated A(3 deposition and hippocampal neurons damage. In vitro, CD40L increased HIF1 alpha, diminished tight junction proteins and dysregulated A(3 transporters in b.End3 cells, which could be restored by CD40 siRNA and HIF1 alpha siRNA. Hence, inhibition of platelet activation ameliorates DACD via alleviating BBB injury, which involving the regulation of CD40L-CD40-HIF1 alpha signaling pathway. Our study may demonstrate a potential therapeutic target for the treatment of DACD.

  Addresses:[Xu, Fuxing; Hu, Juan; Jiang, Shiqiu; Jiang, Tao; Cheng, Bo; Du, Hailiang; Deng, Yingying; Gao, Wei; Li, Yansong; Zhu, Yaomin] Xi An Jiao Tong Univ, Dept Anesthesiol, Affiliated Hosp 1, Xian 710061, Shaanxi, Peoples R China; [Xu, Fuxing; Hu, Juan; Yang, Lan; Jiang, Shiqiu; Jiang, Tao; Cheng, Bo; Du, Hailiang; Deng, Yingying; Gao, Wei; Li, Yansong; Zhu, Yaomin] Xi An Jiao Tong Univ, Ctr Brain Sci, Affiliated Hosp 1, Xian 710061, Shaanxi, Peoples R China; [Xu, Fuxing] Shanxi Med Univ, Shanxi Prov Canc Hosp, Shanxi Hosp Affiliated Canc Hosp, Chinese Acad Med Sci,Dept Anesthesiol,Canc Hosp, Taiyuan 030013, Shanxi, Peoples R China; [Hu, Juan] Shaanxi Univ Chinese Med, Xianyang 712021, Shaanxi, Peoples R China; [Li, Xuying] Hainan Med Univ, Hainan Gen Hosp, Dept Anesthesiol, Hainan Affiliated Hosp, Haikou 570100, Hainan, Peoples R China; [Jiang, Tao] Xi An Jiao Tong Univ, Dept Anesthesiol, Affiliated Hosp 2, Xian 710004, Shaanxi, Peoples R China; [Wang, Ruiduo] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China

  Affiliations:Xi'an Jiaotong University; Xi'an Jiaotong University; Chinese Academy of Medical Sciences - Peking Union Medical College; Shanxi Medical University; Shaanxi University of Chinese Medicine; Hainan Medical University; Xi'an Jiaotong University; State Key Laboratory of Transient Optics & Photonics; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS

  Publication Year:2025

  Volume:221

  Article Number:111211

  DOI Link:http://dx.doi.org/10.1016/j.brainresbull.2025.111211

  数据库ID（收录号）:WOS:001407213800001
• Record 7 of
  
  Title:Characterization of the crosstalk properties of image intensifier spot energy
  
  Author Full Names:Xu, Shihao; Bai, Yonglin; Li, Ran; Cao, Weiwei; Shi, Dalian; Lv, Linwei; Liang, Xiaozhen; Gao, Jiarui

  Source Title:PHYSICA SCRIPTA

  Language:English

  Document Type:Article

  Keywords Plus:DETECTORS

  Abstract:In the field of high-energy particle detection, Intensified Scientific CMOS (IsCMOS) cameras, which utilize image intensifier coupling, can enhance the input spot, generate a grey-value image of the improved spot, and subsequently reconstruct the crystal deposition energy based on the grey value. The image intensifier, playing a critical role in the crosstalk energy calibration of the spot, is a crucial component of the detector enhancement camera. Reducing the crosstalk of the spot output by the image intensifier contributes to the subsequent accurate calibration of high-energy cosmic ray energy. We have designed a test bed to quantify the spot energy crosstalk from Wavelength Shifting Fibers (WLSF) and conducted an in-depth analysis of the spot energy crosstalk in image intensifiers with varying microchannel plate (MCP) a structures. The results indicate that the spot energy crosstalk is higher for weak signals and that increasing the Minimum-ionization particle (MIP) value of the input signal cannot effectively reduce the spot energy crosstalk when the spot is saturated. Nevertheless, when the spot is not saturated, the spot energy crosstalk can be effectively reduced by increasing the operating voltage of the MCP. Furthermore, reducing the aspect ratio of the MCP and increasing the opening area ratio can also mitigate the spot energy crosstalk in the image intensifier.

  Addresses:[Xu, Shihao; Bai, Yonglin; Li, Ran; Cao, Weiwei; Shi, Dalian; Lv, Linwei; Liang, Xiaozhen; Gao, Jiarui] Chinese Acad Sci, Xian Inst Opt & Precis Mech XIOPM, Key Lab Ultrafast Photoelect Diagnost Technol, Xian 710119, Peoples R China; [Xu, Shihao; Bai, Yonglin; Li, Ran] Univ Chinese Acad Sci CAS, Beijing 100049, 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:100

  Issue:2

  Article Number:25026

  DOI Link:http://dx.doi.org/10.1088/1402-4896/adac17

  数据库ID（收录号）:WOS:001408869700001
• Record 8 of
  
  Title:Chalcogenide dual-core all-solid anti-resonant fiber polarization beam splitter operating at 3 μm band
  
  Author Full Names:Zhang, Zhenlong; Guo, Haitao; Li, Jianshe; Zhao, Yuanyuan; Li, Shuguang; Xu, Yantao; Chang, Yanjie; Zhang, Hao

  Source Title:PHYSICA SCRIPTA

  Language:English

  Document Type:Article

  Abstract:For the first time, we proposed a polarization beam splitter (PBS) designed based on chalcogenide dual-core all-solid anti-resonance fiber (AS-ARF) and simulated it numerically using the finite element method (FEM). Two large cladding tubes are introduced to divide the fiber core into fiber cores A and B. Mode coupling and energy exchange between the two fiber cores are enabled through the gap g between the two large cladding tubes. By adjusting the structural parameters of the AS-ARF, polarization beam-splitting ability and single-mode characteristics can be obtained. The influence of the position of the nested tube within the large cladding tube on the performance of the PBS is further investigated. The numerical results show that the beam-splitting lengths of the two proposed PBSs are 9.5 cm and 8.2 cm, respectively, and the polarization extinction ratios (PERs) are -55.98 dB and -41.35 dB at 3 mu m. In the wavelength range from 2.98 mu m to 3.03 mu m, both PBSs can simultaneously achieve polarization beam-splitting and single-mode characteristics. The proposed chalcogenide-based dual-core AS-ARF is a suitable candidate for PBS in the mid-infrared 3 mu m band.

  Addresses:[Zhang, Zhenlong; Li, Jianshe; Zhao, Yuanyuan; Li, Shuguang] Yanshan Univ, Sch Sci, State Key Lab Metastable Mat Sci & Technol, Key Lab Microstruct Mat Phys Hebei Prov, Qinhuangdao 066004, Peoples R China; [Guo, Haitao; Xu, Yantao; Chang, Yanjie; Zhang, Hao] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China

  Affiliations:Yanshan University; State Key Laboratory of Transient Optics & Photonics; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS

  Publication Year:2025

  Volume:100

  Issue:2

  Article Number:25511

  DOI Link:http://dx.doi.org/10.1088/1402-4896/ada326

  数据库ID（收录号）:WOS:001395906200001
• Record 9 of
  
  Title:Naturalization and Evaluation of Synthetic Random Stripes Pattern for Digital Image Correlation
  
  Author Full Names:Ye, Meitu; Guo, Min; Xie, Meilin; Tian, Guangyuan; Shi, Heng; Tian, Yan

  Source Title:MEASUREMENT SCIENCE AND TECHNOLOGY

  Language:English

  Document Type:Article

  Keywords Plus:SPECKLE PATTERNS; QUALITY ASSESSMENT; SUBSET SIZE; DISPLACEMENT; SELECTION; GRADIENT; ERRORS; MODEL

  Abstract:The morphology of speckle patterns commonly used in the digital image correlation (DIC) community can be categorized into artificially generated free shapes and computer-synthesized circular dots. Due to the non-repeatability of manually sprayed patterns, researchers tend to favor code-controlled dot patterns, which exist in two forms: 'white dots on a black background' and 'black dots on a white background'. However, from the perspective of biological evolution, these two dot patterns can be hybridized 'in silico' using the Turing model to create an intermediate form-the 'striped-like' pattern. This hybridization significantly improves species identification and environmental adaptability. Although there have been reports on producing stripe patterns based on the kernel-based Turing model, there is no specific speckle pattern generation specification or comprehensive evaluation research for DIC applications. This paper naturalizes a novel striped speckle pattern and a corresponding generation approach. The pattern quality was assessed and compared with circular dots and hand-sprayed speckles. The stripes pattern outperformed the other two forms regarding Mean Intensity Gradient, q-factor, systematic bias, and random error. Sub-pixel displacement simulation and actual translation test results demonstrate that the proposed striped pattern offers higher precision and robustness in displacement and static strain measurements. Therefore, this striped pattern provides a preferred alternative for DIC technicians.

  Addresses:[Ye, Meitu; Guo, Min; Xie, Meilin; Tian, Guangyuan; Shi, Heng; Tian, Yan] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China; [Ye, Meitu; Guo, Min; Xie, Meilin; Tian, Guangyuan; Shi, Heng; Tian, Yan] Chinese Acad Sci, Key Lab Space Precis Measurement Technol, Xian 710119, Peoples R China; [Xie, Meilin; Shi, Heng] Pilot Natl Lab Marine Sci & Technol Qingdao, Qingdao 266237, Shandong, Peoples R China

  Affiliations:Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Chinese Academy of Sciences; Laoshan Laboratory

  Publication Year:2025

  Volume:36

  Issue:1

  Article Number:15028

  DOI Link:http://dx.doi.org/10.1088/1361-6501/ad8941

  数据库ID（收录号）:WOS:001362362400001
• Record 10 of
  
  Title:Enhancing Optical Sectioning in Structured Illumination Microscopy With Axially Confined Fringe Modulation
  
  Author Full Names:Li, Jiaoyue; Chen, Xiaofei; Wen, Kai; An, Sha; Zheng, Juanjuan; Ma, Ying; Wang, Xiaofang; Dan, Dan; Yao, Baoli; Nienhaus, G. Ulrich; Gao, Peng

  Source Title:LASER & PHOTONICS REVIEWS

  Language:English

  Document Type:Article; Early Access

  Keywords Plus:FLUORESCENCE MICROSCOPY; RESOLUTION; LIGHT; COHERENT

  Abstract:Optical sectioning structured illumination microscopy (OS-SIM) is a fast, minimally invasive 3D imaging technique that has found widespread application in the biosciences. It is based on sample illumination with several illumination fringe patterns featuring distinct mutual phase shifts, from which an axially sectioned image is reconstructed. Its optical sectioning capability is commonly attributed to the attenuation of the fringe modulation of light collected from planes displaced from the focal plane. However, in addition to this effect, which is governed solely by the detection optics, optical sectioning can be further enhanced by confining the fringe modulation axially via partially coherent illumination (PCI). To establish guidelines for optimal illumination field shaping, both theoretically and experimentally are investigated, the optical sectioning strength of OS-SIM upon variation of the two key parameters, modulation period and angular spectrum of the incident illumination. By using PCI with OS-SIM, nearly fivefold and 1.4-fold enhanced axial resolution have achieved for scattering (non-fluorescent) and fluorescent samples, respectively. This work elucidates the optical sectioning mechanism of OS-SIM and provides a perspective for further optimization.

  Addresses:[Li, Jiaoyue; Chen, Xiaofei; Wen, Kai; An, Sha; Zheng, Juanjuan; Ma, Ying; Wang, Xiaofang; Gao, Peng] Xidian Univ, Sch Phys, Xian 710071, Peoples R China; [Li, Jiaoyue; Chen, Xiaofei; Wen, Kai; An, Sha; Zheng, Juanjuan; Ma, Ying; Wang, Xiaofang; Gao, Peng] Minist Educ, Key Lab Optoelect Percept Complex Environm, Xian 710071, Peoples R China; [Li, Jiaoyue; Chen, Xiaofei; Wen, Kai; An, Sha; Zheng, Juanjuan; Ma, Ying; Wang, Xiaofang; Gao, Peng] Univ Shaanxi Prov, Engn Res Ctr Informat Nanomat, Xian 710071, Peoples R China; [Dan, Dan; Yao, Baoli] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China; [Nienhaus, G. Ulrich] Karlsruhe Inst Technol, Inst Appl Phys, D-76049 Karlsruhe, Germany; [Nienhaus, G. Ulrich] Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Eggenstein Leopoldshafen, Germany; [Nienhaus, G. Ulrich] Karlsruhe Inst Technol, Inst Biol & Chem Syst, D-76021 Eggenstein Leopoldshafen, Germany; [Nienhaus, G. Ulrich] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

  Affiliations:Xidian University; State Key Laboratory of Transient Optics & Photonics; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Helmholtz Association; Karlsruhe Institute of Technology; Helmholtz Association; Karlsruhe Institute of Technology; Helmholtz Association; Karlsruhe Institute of Technology; University of Illinois System; University of Illinois Urbana-Champaign

  Publication Year:2025

  DOI Link:http://dx.doi.org/10.1002/lpor.202401697

  数据库ID（收录号）:WOS:001403516500001
• Record 11 of
  
  Title:Measurement and Analysis of Optical Transmission Characteristics of the Human Skull
  
  Author Full Names:Chen, Peiquan; Zhou, Liang; Liu, Zhaohui; Liu, Shuang

  Source Title:JOURNAL OF BIOPHOTONICS

  Language:English

  Document Type:Article; Early Access

  Keywords Plus:NEAR-INFRARED SPECTROSCOPY; HUMAN SKIN; WAVELENGTH RANGE; TISSUES

  Abstract:The brain, as a vital part of central nervous system, receives approximately 25% of body's blood supply, making accurate monitoring of cerebral blood flow essential. While fNIRS is widely used for measuring brain physiology, complex tissue structure affects light intensity, spot size, and detection accuracy. Many studies rely on simulations with limited experimental validation. In this study, we used real adult skulls and agar to create a mimic model, building a transmission optical system with 13 wavelength filters and varying agar thicknesses. Peak intensity of transmitted light and size of scattered spot were measured at different wavelengths, and transmittance, total attenuation coefficient, and spot diameter enlargement of cranial mimics at different wavelengths were obtained. Results showed wavelengths below 550 nm struggled to penetrate the skull, while those above 700 nm penetrated deeper and diffused more. This suggests that short wavelengths capture epidermal PPG signals, whereas longer wavelengths detect both epidermal and intracranial signals.

  Addresses:[Chen, Peiquan; Zhou, Liang; Liu, Zhaohui] Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian, Peoples R China; [Chen, Peiquan] Univ Chinese Acad Sci, Beijing, Peoples R China; [Chen, Peiquan; Zhou, Liang; Liu, Zhaohui] Chinese Acad Sci, Key Lab Space Precis Measurement Technol, Xian, Peoples R China; [Liu, Shuang] Chinese Acad Med Sci & Peking Union Med Coll, Peking Union Med Coll Hosp, Dept Emergency, State Key Lab Complex Severe & Rare Dis, Beijing, 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; Chinese Academy of Medical Sciences - Peking Union Medical College; Peking Union Medical College; Peking Union Medical College Hospital

  Publication Year:2025

  DOI Link:http://dx.doi.org/10.1002/jbio.202400414

  数据库ID（收录号）:WOS:001397971200001
• Record 12 of
  
  Title:In Situ Infared Optical Fiber Sensor Monitoring Reactants and Products Changes during Photocatalytic Reaction
  
  Author Full Names:Wu, Zeyan; Zhao, Yongkun; You, Tianxiang; Kou, Zongkui; Xu, Yantao; Xia, Mengling; Guo, Haitao; Zhang, Xianghua; Xu, Yinsheng

  Source Title:ANALYTICAL CHEMISTRY

  Language:English

  Document Type:Article

  Keywords Plus:TIO2; DEGRADATION; SENSITIVITY; TECHNOLOGY; PHASE

  Abstract:An in situ monitoring reaction can better obtain the variations during the progression of the photocatalytic reaction. However, the complexity of the apparatus and the limited applicability of substances are the common challenges faced by most in situ monitoring methods. Here, we invented an in situ infrared optical fiber sensor to monitor the reactants and products during photocatalytic reaction. The sensor, which has four tapered regions, demonstrates the best sensitivity of 0.71 au/vol %, 70 times higher than that of the fiber sensor without a tapered region. Then, this sensor was successfully used to in situ monitor the photocatalytic reaction between benzaldehyde and ethanol under the UV light and TiO2. The calibration plots of the reactants and products were established by sensing a series of designed concentration solutions. Based on the calibration plots, the real-time concentrations of four substances could be derived by converting the absorbance values, and the concentration changes of the reactants and products followed the first order kinetic mode. The equilibrium concentrations of reactants and products could be obtained from the fitting curves. With the increase in the UV light intensity, this sensor could detect a gradual increase in the rate of this photocatalytic reaction. The results show that this in situ infrared fiber sensor can monitor the progression of the photocatalytic reaction in real time, which will be helpful for unveiling the photocatalytic mechanism.

  Addresses:[Wu, Zeyan; Zhao, Yongkun; You, Tianxiang; Xia, Mengling; Xu, Yinsheng] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China; [Kou, Zongkui] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China; [Xu, Yantao; Guo, Haitao] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China; [Zhang, Xianghua] Univ Rennes, Inst Sci Chim Rennes, CNRS, UMR 6226, F-35042 Rennes, France

  Affiliations:Wuhan University of Technology; Wuhan University of Technology; State Key Laboratory of Transient Optics & Photonics; Chinese Academy of Sciences; Xi'an Institute of Optics & Precision Mechanics, CAS; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute of Chemistry (INC); Universite de Rennes

  Publication Year:2025

  Volume:97

  Issue:2

  Start Page:1229

  End Page:1235

  DOI Link:http://dx.doi.org/10.1021/acs.analchem.4c04704

  数据库ID（收录号）:WOS:001393280900001