Infrared Physics & Technology最新文献_第6页

Deep learning-enhanced ultra-sensitive fiber optic SPR sensor for mercury ion detection 用于汞离子检测的深度学习增强超灵敏光纤SPR传感器

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-31 DOI: 10.1016/j.infrared.2025.106128

Lixia Li , Yurui Huang , Jiabin Zhao , Feiyou Liu , Ning Feng , Yufang Liu

{"title":"Deep learning-enhanced ultra-sensitive fiber optic SPR sensor for mercury ion detection","authors":"Lixia Li , Yurui Huang , Jiabin Zhao , Feiyou Liu , Ning Feng , Yufang Liu","doi":"10.1016/j.infrared.2025.106128","DOIUrl":"10.1016/j.infrared.2025.106128","url":null,"abstract":"<div><div>Mercury ions (Hg<sup>2+</sup>) are highly toxic heavy metal pollutants that pose significant risks to the environment and human health. In this paper, a fiber optic surface plasmon resonance (SPR) sensor is proposed for ultra-sensitive detection of Hg<sup>2+</sup>. The probe features Ag/ Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> (GST)/Ag composite film and metal–organic framework (MOF)-sensitized layer functionalized with probe DNA (pDNA). In the presence of Hg<sup>2+</sup>, pDNA interacts with target DNA (tDNA) carrying gold nanoparticles (AuNPs) in the solution through the T-Hg<sup>2+</sup>-T structure, immobilizing AuNPs on the sensing surface and inducing a spectral red shift. By combining GST’s high dielectric constant and MOF’s large surface area with strong pDNA affinity, the sensor achieves a maximum refractive index (RI) sensitivity of 11471 nm/RIU, detecting Hg<sup>2+</sup> as low as 10 pM. Furthermore, the deep learning model based on the residual neural network (ResNet) is employed to classify and recognize the SPR spectra corresponding to six distinct concentrations of Hg<sup>2+</sup>, achieving a training accuracy of 99.88 % and a test accuracy of 97.5 %. Therefore, ultra-sensitive fiber optic SPR sensor with deep learning delivers high-performance sensing while enabling rapid, precise, and sensitive quantification of Hg<sup>2+</sup> detection.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106128"},"PeriodicalIF":3.4,"publicationDate":"2025-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A compact local oscillator distribution network design for Leighton Chajnantor Telescope based on a center frequency of 115 GHz 一种中心频率为115 GHz的紧凑型莱顿查南托望远镜本振配电网设计

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-30 DOI: 10.1016/j.infrared.2025.106125

Donghong Cao , Yi Ji , Yiwen Zhang

引用次数: 0

Research on narrow-linewidth erbium-doped fiber lasers based on composite double-ring structures 基于复合双环结构的窄线宽掺铒光纤激光器研究

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-30 DOI: 10.1016/j.infrared.2025.106101

Shuyuan Lv , Duoduo Duan , Xiaohui Li , Wenfeng Luo , Tingting Zhang

{"title":"Research on narrow-linewidth erbium-doped fiber lasers based on composite double-ring structures","authors":"Shuyuan Lv , Duoduo Duan , Xiaohui Li , Wenfeng Luo , Tingting Zhang","doi":"10.1016/j.infrared.2025.106101","DOIUrl":"10.1016/j.infrared.2025.106101","url":null,"abstract":"<div><div>This work presents an innovative erbium-doped fiber laser with ultra-narrow linewidth and single longitudinal mode operation. In this paper, a composite double-ring cavity composed of double couplers combined with a uniform fiber Bragg grating with a reflection bandwidth of only 0.25 nm is used to achieve good performance of single longitudinal mode laser and narrow linewidth output. The experimental results clearly show that under room temperature conditions, the output central wavelength of this laser is 1558.31 nm, the optical signal-to-noise ratio is as high as 61.71 dB, and the slope efficiency is 1.34 %. After a continuous measurement process of 60 min, the fluctuation amplitude of the output wavelength is only 0.05 nm, and the fluctuation amplitude of power is 0.008 dB, fully confirming that the designed laser has good wavelength stability and power stability. The delay self-heterodyne method is used to measure its linewidth, and the results show that the linewidth of the laser is as low as 352 Hz. Such lasers have broad application prospects in cutting-edge fields such as lidar and space optical communication systems.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106101"},"PeriodicalIF":3.4,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hyperspectral inversion of organic matter content in agricultural soils based on fractional-order derivative and ensemble learning 基于分数阶导数和集合学习的农业土壤有机质含量高光谱反演

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-30 DOI: 10.1016/j.infrared.2025.106122

Anhong Tian , Zhiyuan Li , Chengbiao Fu

{"title":"Hyperspectral inversion of organic matter content in agricultural soils based on fractional-order derivative and ensemble learning","authors":"Anhong Tian , Zhiyuan Li , Chengbiao Fu","doi":"10.1016/j.infrared.2025.106122","DOIUrl":"10.1016/j.infrared.2025.106122","url":null,"abstract":"<div><div>Hyperspectral technology shows great potential for rapidly monitoring soil organic matter (SOM) in farmland. To improve prediction accuracy and model stability, this study proposes a new SOM inversion strategy based on the Stacking ensemble learning framework. By applying fractional-order derivative (FOD) processing to hyperspectral data, the spectral data quality is effectively enhanced. Feature selection was performed using the Boruta algorithm, and the modeling performance of six common machine learning algorithms, including Partial Least Squares Regression (PLSR), Support Vector Regression (SVR), Extreme Gradient Boosting (XGBoost), Random Forest (RF), Adaptive Boosting (AdaBoost), and Gradient Boosting Decision Tree (GBDT), was evaluated and compared. The results show that FOD outperforms traditional integer-order differential methods in modeling. Under the 1.8-order FOD processing, the prediction performance of all models improved significantly. Among them, the Stacking ensemble model combining SVR, RF, AdaBoost, and GBDT achieved the best performance on the test set, with an <em>R</em><sup>2</sup> of 0.83, surpassing the <em>R</em><sup>2</sup> of the best single model, GBDT (0.81). Additionally, SHAP value analysis further confirmed the effectiveness of combining FOD, Boruta, and Stacking strategies, greatly improving SOM prediction accuracy. This study offers a novel and effective technical approach for the rapid and accurate inversion of SOM content in farmland soil.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106122"},"PeriodicalIF":3.4,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Infrared image enhancement for transmission cable terminal equipment using detail-enhanced transformer CycleGAN 红外图像增强传输电缆终端设备使用细节增强变压器CycleGAN

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-29 DOI: 10.1016/j.infrared.2025.106098

Ziang Chen, Yuxiang Wu, Xincheng Wang

{"title":"Infrared image enhancement for transmission cable terminal equipment using detail-enhanced transformer CycleGAN","authors":"Ziang Chen, Yuxiang Wu, Xincheng Wang","doi":"10.1016/j.infrared.2025.106098","DOIUrl":"10.1016/j.infrared.2025.106098","url":null,"abstract":"<div><div>This paper proposes a detail-enhanced transformer cycle generative adversarial network (DET-CycleGAN) to improve the quality of infrared images of transmission cable terminal equipment. In the proposed model, the CycleGAN network is constructed based on a U-Net structure and integrated with the transformer to achieve an overall improvement in image quality. In particular, a high-frequency detail enhancement module (DEM) that combines guided filtering and attention weighting is designed, which can effectively enhance the texture features of key areas. In addition, a novel synthetic dataset synthesis method is proposed by combining the atmospheric scattering model and histogram matching. This method uses the atmospheric scattering model to simulate the blur-induced degradation in real low-quality infrared images while using histogram matching for low-contrast feature adaptation, ultimately generating a physically plausible paired infrared image dataset. The model is first pre-trained on synthetic paired data and then fine-tuned using real data. Finally, through knowledge distillation, the model is made lightweight to facilitate deployment in resource-constrained environments. Experimental results show that compared to methods such as CycleGAN, the proposed method improves FID by 9.08%, BQS by 65.49%, saturation by 12.12%, colorfulness by 9.42% on average and reduces the parameters by about 83.5%.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106098"},"PeriodicalIF":3.4,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-precision temperature calibration method for spectral emissivity measurement at low temperatures 低温下光谱发射率测量的高精度温度标定方法

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-28 DOI: 10.1016/j.infrared.2025.106119

Zeye Yuan , Longfei Li , Kun Yu , Yufang Liu

{"title":"High-precision temperature calibration method for spectral emissivity measurement at low temperatures","authors":"Zeye Yuan , Longfei Li , Kun Yu , Yufang Liu","doi":"10.1016/j.infrared.2025.106119","DOIUrl":"10.1016/j.infrared.2025.106119","url":null,"abstract":"<div><div>Under low-temperature conditions, temperature measurement uncertainties of radiation sources introduce non-negligible systematic errors in weak radiation detection. This study proposes a novel equivalent temperature calibration method that iteratively determines the temperature of the central radiation zone based on temperature measurements in non-detection areas. A proportional heat transfer model of the sample radiation source is developed to simulate the surface temperature distribution under high-vacuum cryogenic conditions, optimizing the temperature iteration range. Temperature fluctuation theory is incorporated to quantitatively analyze the impact of radiation source temperature uncertainties on direct emissivity measurement accuracy. The accuracy of the proposed temperature calculation method is systematically evaluated through a comparative analysis of temperature measurement results for copper-based high-emissivity coating samples across various temperature conditions. The reliability of the experimental setup is further validated using a VO<sub>2</sub>-sapphire sample, demonstrating spectral emissivity measurements within the temperature range of 213–363 K, with an overall expanded measurement uncertainty better than 0.01.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106119"},"PeriodicalIF":3.4,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrogen sensing based on polymer modified quartz tuning fork 基于聚合物改性石英音叉的氢传感

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-28 DOI: 10.1016/j.infrared.2025.106120

Chuanning Li , Hanxu Ma , Ying He , Shunda Qiao , Yufei Ma

引用次数: 0

High-sensitivity humidity sensor based on strongly-coupled seven-core fiber for respiratory rate monitoring 基于强耦合七芯光纤的呼吸速率监测高灵敏度湿度传感器

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-28 DOI: 10.1016/j.infrared.2025.106118

Jinghong Zhang , Ying Wang , Barerem-Melgueba Mao , Lingyu Wang , Qiang Ling , Chuankang Li , Zhangwei Yu , Daru Chen

{"title":"High-sensitivity humidity sensor based on strongly-coupled seven-core fiber for respiratory rate monitoring","authors":"Jinghong Zhang , Ying Wang , Barerem-Melgueba Mao , Lingyu Wang , Qiang Ling , Chuankang Li , Zhangwei Yu , Daru Chen","doi":"10.1016/j.infrared.2025.106118","DOIUrl":"10.1016/j.infrared.2025.106118","url":null,"abstract":"<div><div>In this study, an all-fiber Mach-Zehnder interferometer (MZI) respiratory rate sensor based on strongly-coupled seven-core fiber (SC-SCF) is proposed detailly. The MZI, uniformly coated with a strain-induced humidity-sensitive film of agarose, exhibits a highly sensitive response to environmental humidity variations. Thus, it could effectively translate the humidity responses caused by respiratory into measurable optical signals, enabling accurate humidity detection. In experiment, the high humidity sensitivity of 1.076 nm/%RH in the relative humidity range from 25 %RH to 50 %RH has been obtained. Through investigations on bending and surrounding refractive index (SRI) sensing, the high bending sensitivity and low SRI sensitivity have been obtained proved. And it also proves the strain-induced humidity sensing mechanism of our sensor. Besides, the respiratory rate test performs the sensor can be used in different respiratory patterns. In one respiratory cycle of normal pattern, the response time and recovery time are 0.928 and 1.304 s, respectively. The ability of our sensor for the respiratory rate monitoring under different heart rates and long-term monitoring have been displayed in our work. Our sensor not only has high sensitivity and accuracy, but also enables non-contact respiratory monitoring, which has potential applications, especially in medical and healthcare fields such as respiratory monitoring and sleep studies.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106118"},"PeriodicalIF":3.4,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Broadband two-dimensional far-field beam profiling of commercial CW terahertz photomixers from 0.2 to 1.5 THz 商用连续波太赫兹光电混合器在0.2 ~ 1.5太赫兹波段的宽带二维远场波束分析

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-27 DOI: 10.1016/j.infrared.2025.106094

Mathias Hedegaard Kristensen, Esben Skovsen

{"title":"Broadband two-dimensional far-field beam profiling of commercial CW terahertz photomixers from 0.2 to 1.5 THz","authors":"Mathias Hedegaard Kristensen, Esben Skovsen","doi":"10.1016/j.infrared.2025.106094","DOIUrl":"10.1016/j.infrared.2025.106094","url":null,"abstract":"<div><div>We present a systematic far-field characterization of four commercial PIN diode terahertz photomixers over the 0.2–1.5THz frequency range using a two-dimensional (2D) raster scanning method. The emission pattern of each transmitter, equipped with an integrated hyper-hemispherical silicon lens, was characterized using a broadband Schottky diode receiver over a 35 × 35mm<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span> grid. The results reveal consistent frequency-dependent beam divergence and the emergence of distinct Airy diffraction patterns at intermediate frequencies, attributed to lens-induced aperture effects. In addition to qualitative mapping, we extract quantitative metrics – including divergence slope, beam asymmetry, ellipticity, and centroid variability – that enable objective comparison of beam profiles across devices and frequencies. This comprehensive mapping underscores the importance of full 2D beam profiling for understanding THz propagation and offers insights into lens design and photomixer packaging for optimized system performance.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106094"},"PeriodicalIF":3.4,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical analysis of the impact of charge size on the combustion mechanism and radiation-enhanced effect in Mg/PTFE/Viton pyrolants 装药粒度对Mg/PTFE/Viton热解物燃烧机理及辐射增强效应影响的数值分析

IF 3.4 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-08-27 DOI: 10.1016/j.infrared.2025.106110

Yichao Liu, Bohuai Zhou, Chengkuan Shi, Zefeng Guo, Jun Huang, Hua Guan

{"title":"Numerical analysis of the impact of charge size on the combustion mechanism and radiation-enhanced effect in Mg/PTFE/Viton pyrolants","authors":"Yichao Liu, Bohuai Zhou, Chengkuan Shi, Zefeng Guo, Jun Huang, Hua Guan","doi":"10.1016/j.infrared.2025.106110","DOIUrl":"10.1016/j.infrared.2025.106110","url":null,"abstract":"<div><div>Magnesium/polytetrafluoroethylene/Viton (MTV) pyrolants are a typical type of infrared radiation agent capable of emitting intense infrared radiation during combustion. This study systematically investigated the influence of MTV charge size on combustion characteristics and infrared radiation properties through a combination of numerical simulation and experimental methods. Experimental results demonstrated that increasing the charge size significantly enhances the radiation intensity across the near (1–3 µm), mid (3–5 µm), and far (8–14 µm) infrared wavelength bands. Through data fitting, a quantitative relationship was established showing that both infrared radiation intensity and radiation area increase quadratically with charge size expansion. This finding provides a theoretical foundation for the engineering design and practical application of infrared radiation agents. Additionally, based on the energy dissipation concept (EDC model) and the Realizable k-ε turbulence model, numerical simulations were conducted on the combustion processes of five different MTV charge sizes (Ø18 mm, Ø30 mm, Ø42 mm, Ø78 mm, Ø118 mm). The results indicated that larger charge sizes prolong the presence of anaerobic zone products, broaden the thermal radiation range, increase the reaction heat release, and enhance convective heat transfer, thereby accelerating flame propagation. This study presents, for the first time, a quantitative analysis of the relationship between infrared radiation characteristics and charge size in such agents, and confirms that the infrared radiation capability of MTV is significantly enhanced through the synergistic effects of multiple microscopic mechanisms.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"151 ","pages":"Article 106110"},"PeriodicalIF":3.4,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0