Infrared Physics & Technology最新文献_第2页

Investigation of temperature dependence of tapered optical fibers

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-23 DOI: 10.1016/j.infrared.2025.105725

Qinghao Song , Ying Xiao , Zhihao Huang , Kun Sun , Qing Wu

{"title":"Investigation of temperature dependence of tapered optical fibers","authors":"Qinghao Song , Ying Xiao , Zhihao Huang , Kun Sun , Qing Wu","doi":"10.1016/j.infrared.2025.105725","DOIUrl":"10.1016/j.infrared.2025.105725","url":null,"abstract":"<div><div>The temperature-sensitive performance of tapered optical fibers, characterized by high sensitivity and stability, is comprehensively studied. This sensor, based on the coupling between core and cladding modes resulting in Mach-Zehnder interference (MZI), adopts a single-mode fiber (SMF)-multimode fiber (MMF)-tapered SMF-MMF-SMF (SMTMS) hybrid structure. The relationship between resonance wavelength shifts and surrounding temperatures is explored to evaluate its temperature sensitivity. Experimental results reveal that the multimode fiber length and the length of the conical region are critical factors affecting temperature sensitivity. Various SMTMS structures with differing MMF lengths and conical region lengths are fabricated, achieving a maximum sensitivity of −145.8 pm/°C. Notably, the sensor exhibits exceptional stability under laboratory conditions, further demonstrating its reliability for practical applications. With its high sensitivity and robust stability, this sensor shows great promise for applications in fields such as healthcare and environmental monitoring.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"145 ","pages":"Article 105725"},"PeriodicalIF":3.1,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098111","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 bolometers based on 40-nm-Thick Nano-Thermoelectric silicon membranes

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-22 DOI: 10.1016/j.infrared.2025.105720

Anton Murros, Kuura Sovanto, Jonna Tiira, Kirsi Tappura, Mika Prunnila, Aapo Varpula

{"title":"Infrared bolometers based on 40-nm-Thick Nano-Thermoelectric silicon membranes","authors":"Anton Murros, Kuura Sovanto, Jonna Tiira, Kirsi Tappura, Mika Prunnila, Aapo Varpula","doi":"10.1016/j.infrared.2025.105720","DOIUrl":"10.1016/j.infrared.2025.105720","url":null,"abstract":"<div><div>State-of the-art infrared photodetectors operating in the mid- and long-wavelength infrared (MWIR and LWIR) are largely dominated by cryogenically cooled quantum sensors when the target is the highest sensitivity and detection speeds. Nano-thermoelectrics provide a route towards competitive uncooled infrared bolometer technology that can obtain high speed and sensitivity, low-power operation, and cost-effectiveness. We demonstrate nano-thermoelectric LWIR bolometers with fast and high-sensitivity response to LWIR around 10 µm. These devices are based on ultra-thin silicon membranes that utilize the dimensional scaling of silicon nanomembranes in thermoelectric elements and are combined with metallic nanomembranes with subwavelength absorber structures. The fast device performance stems from a low heat capacity design where the thermoelectric beams act both as mechanical supports and transducer elements. Furthermore, by scaling down the thickness of the thermoelectric beams the thermal conductivity is reduced owing to enhanced phonon boundary scattering, resulting in increased sensitivity. The nano-thermoelectric LWIR bolometers are based on 40-nm-thick <em>n</em>- and <em>p</em>-type silicon membranes with LWIR (voltage) responsivities up to 1636 V/W and 1350 V/W and time constants in the range of 300–600 µs, resulting in specific detectivities up to 1.56 × 10<sup>8</sup> cmHz<sup>1/2</sup>/W. We also investigate the use of a heavily doped N++ substrate to increase optical cavity back reflection, resulting in an increased Si substrate reflectance from 30 % to 70 %–75 % for wavelengths between 8–10 µm, resulting in an increase in device responsivity by approximately 20 %.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"145 ","pages":"Article 105720"},"PeriodicalIF":3.1,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing thermographic characterisation of delaminated zones in CFRP composites through data fusion with ultrasonic Lamb Waves technique

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-19 DOI: 10.1016/j.infrared.2025.105721

Léa A.C. LECOINTRE , Yu ZHOU , Naoki HOSOYA , Shintaro KAMIYAMA , Shin-ichi TAKEDA , Tomohiro YOKOZEKI

引用次数: 0

Infrared attitude measurement signal parameter estimation based on gradient zero-crossing method

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-15 DOI: 10.1016/j.infrared.2025.105716

Yihan Cao , Qianwen Li , Haifeng Ding , Miaomiao Xu , Ruyun Tian , Xiongzhu Bu

{"title":"Infrared attitude measurement signal parameter estimation based on gradient zero-crossing method","authors":"Yihan Cao , Qianwen Li , Haifeng Ding , Miaomiao Xu , Ruyun Tian , Xiongzhu Bu","doi":"10.1016/j.infrared.2025.105716","DOIUrl":"10.1016/j.infrared.2025.105716","url":null,"abstract":"<div><div>Prior to measuring the attitude of a projectile using contemporary infrared techniques, it is necessary to calibrate the output signal parameters of the infrared sensor. These measurements are influenced by factors such as the projectile’s flight path, surrounding vegetation, and geographical region. To address the issue that the calibrated infrared attitude signal parameters lack applicability for long-distance flights across varying regions and vegetation, a novel method for estimating infrared attitude measurement signal parameters has been developed. This method is based on the gradient zero-crossing method. Based on the gradient information derived from the infrared sensor, the extrema of the infrared signal can be converted into zero-crossing points. By utilizing the update of the maximum value within the nearest half-cycle as the time base, the maximum and minimum values of the infrared attitude measurement signal in the last nearest half-cycle are obtained through interpolation with an approximate uniform variable-speed model. Consequently, the model parameters of the attitude measurement signal, which are applicable to the current projectile flight environment, are estimated and updated. By changing the experimental environment, the feasibility of the infrared signal parameter estimation method for attitude measurement based on the gradient zero-crossing method proposed in this paper is verified. Compared with the calibration results in the same environment, the relative errors of amplitude and bias parameter estimation are respectively less than ±0.81% and ±0.11%. This proposed parameter estimation method addresses the issue of fixed calibration parameters in attitude measurement signals, thereby enhancing the versatility of the infrared attitude measurement method for projectiles.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"145 ","pages":"Article 105716"},"PeriodicalIF":3.1,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098106","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 REBPNet-based IR radiometric calibration method considering ambient temperature change

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-13 DOI: 10.1016/j.infrared.2025.105715

Ting Li , Xuefeng Lai , Sheng Liao , Xulong Zhao , Yucheng Xia , Jinmei Zhou

{"title":"A REBPNet-based IR radiometric calibration method considering ambient temperature change","authors":"Ting Li , Xuefeng Lai , Sheng Liao , Xulong Zhao , Yucheng Xia , Jinmei Zhou","doi":"10.1016/j.infrared.2025.105715","DOIUrl":"10.1016/j.infrared.2025.105715","url":null,"abstract":"<div><div>Considering the calibration problems of the gray-level drift, complicated calibration procedures, numerous calibration points and high time cost in the infrared radiation measurement system when the ambient temperature changes, a REBPNet-based IR radiometric calibration method is proposed. Firstly, a unified database is generated by integrating ambient temperature compensation coefficient, different gray-level images, neutral density attenuators, integration times, and theoretical radiations under the deduced infrared physical model. Then, the calibration coefficients are automatically learned through the relative error backward propagation network. Furthermore, a multi-stage learning strategy is provided for the training of the complex calibration models, including the segmented training database and the learning rate setting rule. Finally, the radiometric calibration experiments are performed on an infrared radiation measurement system. Results show that the method is effective in improving the calibration accuracy when the ambient temperature changes. Additionally, the method is capable of measuring the internal stray radiation and its drift of the optical system and attenuators.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"145 ","pages":"Article 105715"},"PeriodicalIF":3.1,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098115","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 target detection model based on parallel interactive feature extraction and attention fusion structure

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-11 DOI: 10.1016/j.infrared.2025.105714

Ruxin Gao , Xinyu Li, Tengfei Wang, Haiquan Jin, Yongfei Ma, Qunpo Liu, Bo Su

{"title":"A target detection model based on parallel interactive feature extraction and attention fusion structure","authors":"Ruxin Gao , Xinyu Li, Tengfei Wang, Haiquan Jin, Yongfei Ma, Qunpo Liu, Bo Su","doi":"10.1016/j.infrared.2025.105714","DOIUrl":"10.1016/j.infrared.2025.105714","url":null,"abstract":"<div><div>In this paper, an anomaly inspection algorithm is designed with the infrared anomaly inspection task of substation. Firstly, a parallel interaction feature extraction structure is designed, which can strengthen the information interaction ability of the main part of the model, and the P and R indexes of the model are improved by 4% and 8.7%, respectively; secondly, a parallel encoder structure is designed to strengthen the information interaction between the higher levels of the network, and strengthen the ability of recognizing the small targets; thirdly, a feature attention fusion structure is designed, which can pay attention to the regions to be detected other than the background and the important information channels, so that the information extracted from the features is fully utilized and the model training accuracy is improved. Finally, based on the above innovations, this paper finally proposes a target detection model for substation infrared anomaly inspection, and the mAP50 on substation infrared inspection dataset, FLIRv2, VisDrone2019, and VOC dataset reaches 98.9%, 49.7%, 40.2%, and 79.4%, respectively, which proves the validity of the model design in this paper.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"145 ","pages":"Article 105714"},"PeriodicalIF":3.1,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098110","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

The optical and electrical properties of V2O5-TiO2/PI Nanocomposite film prepared by the Sol-Gel method

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-11 DOI: 10.1016/j.infrared.2025.105719

Haoting Zhang , Yi Li , Weiye He , Chang Xue , Weiye Peng , Hongwei Liu , Wei Wang , Zhangqing Shi , Wenyan Dai , Zhen Yuan , Ke Lin

{"title":"The optical and electrical properties of V2O5-TiO2/PI Nanocomposite film prepared by the Sol-Gel method","authors":"Haoting Zhang , Yi Li , Weiye He , Chang Xue , Weiye Peng , Hongwei Liu , Wei Wang , Zhangqing Shi , Wenyan Dai , Zhen Yuan , Ke Lin","doi":"10.1016/j.infrared.2025.105719","DOIUrl":"10.1016/j.infrared.2025.105719","url":null,"abstract":"<div><div>In this study, nanoscale V<sub>2</sub>O<sub>5</sub> film and V<sub>2</sub>O<sub>5</sub>-TiO<sub>2</sub> composite film were prepared by the sol–gel method and post-annealing process utilizing polyimide (PI) as the substrates. The properties of the composite films were characterized by examining the surface morphology, elemental composition, and optical and electrical properties. The results demonstrate that the films maintain the flexibility of the substrate, while TiO<sub>2</sub> doping effectively enhances the optical and electrical properties of the V<sub>2</sub>O<sub>5</sub>/PI. In the range of 750–1200 nm, the maximum transmittance of the V<sub>2</sub>O<sub>5</sub>-TiO<sub>2</sub>/PI film is increased by 5.77 % compared to the V<sub>2</sub>O<sub>5</sub>/PI film. At room temperature, the resistance of the film was significantly reduced by 96.4 % compared to the V<sub>2</sub>O<sub>5</sub>/PI film. In the context of thermotropic phase transitions, the phase transition temperature of V<sub>2</sub>O<sub>5</sub>-TiO<sub>2</sub>/PI film decreased to 213 ℃. Through many times repeated bending and temperature cycling, the films can maintain good optical and electrical properties, which is expected to be applied to flexible semiconductors and integrated optoelectronic devices.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"145 ","pages":"Article 105719"},"PeriodicalIF":3.1,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143101519","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

Double filter noise reduction algorithm optimized by RBF neural network for laser absorption spectroscopy

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-10 DOI: 10.1016/j.infrared.2025.105718

Qiang Ge , Dingli Xu , Qiannan Cai , Gang Zhang , Sheng Zhou , Jingsong Li , Linguang Xu

{"title":"Double filter noise reduction algorithm optimized by RBF neural network for laser absorption spectroscopy","authors":"Qiang Ge , Dingli Xu , Qiannan Cai , Gang Zhang , Sheng Zhou , Jingsong Li , Linguang Xu","doi":"10.1016/j.infrared.2025.105718","DOIUrl":"10.1016/j.infrared.2025.105718","url":null,"abstract":"<div><div>Acetylene(C<sub>2</sub>H<sub>2</sub>) gas sensors are vital for monitoring the safety of atmospheric as well as industrial environments. In this paper, a high-sensitivity trace gas detection sensor for C<sub>2</sub>H<sub>2</sub> has been developed using tunable diode laser absorption spectroscopy (TDLAS). As we known, the accuracy and sensitivity of TDLAS is largely limited by data noise as well as concentration inversion algorithms as a calibration-free gas detection technology. In order to solve this problem, a dual-filter noise reduction algorithm based on neural network optimization was proposed, which is applied in the process of spectral data processing and concentration inversion. The algorithm is initially tested by using simulated absorption spectra and compared with traditional single filter signal processing algorithms. Subsequently, experimental tests were carried out using standard-concentration gases as well as high-precision long-path gas absorption cell. The experimental results demonstrate that the proposed algorithm increases the signal-to-noise ratio (SNR) from 14.31 dB to 22.07 dB, a 7.76 dB improvement. The standard deviation of the inversion concentration is lowered from 12.53 ppm to 3.25 ppm, representing a 3.86 times improvement. Furthermore, Allan deviation results show that the data filtered according to the proposed technique has a detection sensitivity of 0.83 ppm at the optimal integration time of 19 s. These results demonstrate that the data processed by the algorithm can more precisely predict concentration values, providing significant support for increasing the performance of gas sensor systems.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"145 ","pages":"Article 105718"},"PeriodicalIF":3.1,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098108","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

Effect of VO2 particle aggregation on the performance of thermochromic smart window films for building

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-10 DOI: 10.1016/j.infrared.2025.105717

Kewei Sun , Yinmo Xie , Junyu Chu , Xiaoyue Zhang , Qingzhi Lai , Jun Qiu , Jianyu Tan

{"title":"Effect of VO2 particle aggregation on the performance of thermochromic smart window films for building","authors":"Kewei Sun , Yinmo Xie , Junyu Chu , Xiaoyue Zhang , Qingzhi Lai , Jun Qiu , Jianyu Tan","doi":"10.1016/j.infrared.2025.105717","DOIUrl":"10.1016/j.infrared.2025.105717","url":null,"abstract":"<div><div>The energy efficiency of smart windows plays a crucial role in reducing building energy consumption, and VO<sub>2</sub> particle-based films are widely studied due to their potential for large-scale application. However, current research often assumes that VO<sub>2</sub> particles are completely dispersed, overlooking the impact of aggregation on optical performance. This study systematically investigates the effects of different sizes, aggregation types, and aggregation degrees of VO<sub>2</sub> particles on the optical performance of smart windows using the FDTD method. The results show that particle aggregation leads to an increase in scattering efficiency and causes a redshift and broadening of the absorption peak. As the number of aggregated particles increases, both <em>τ</em><sub>lum</sub> and Δ<em>τ</em><sub>sol</sub> decrease significantly. Additionally, larger particle sizes further exacerbate this negative impact. When the particle size increases from 30 nm to 100 nm, the decrease in <em>τ</em><sub>lum</sub> caused by aggregation increases from 10.85 % to 20.97 %, and the reduction in Δ<em>τ</em><sub>sol</sub> rises from 8.18 % to 67.79 %. Further analysis shows that higher degrees of aggregation result in more pronounced declines in optical performance. Therefore, when preparing VO<sub>2</sub>-based films for smart windows, measures should be taken to minimize particle aggregation, while appropriately reducing particle size and adjusting inter-particle spacing to effectively mitigate the negative effects of aggregation on optical performance.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"145 ","pages":"Article 105717"},"PeriodicalIF":3.1,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098109","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

Design and fabrication of InGaAs/InAlAs avalanche photodiodes with wide dynamic range and high bandwidth

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-01-09 DOI: 10.1016/j.infrared.2025.105710

Guohao Yang , Tianhong Liu , Yanwei Yang , Shengyu Liu , Yifeng Lu , Jinping Li , Cunzhu Tong

引用次数: 0