Infrared Physics & Technology最新文献

Large-Area near infrared metamaterial emitters based on Si nanodisk arrays

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-25 DOI: 10.1016/j.infrared.2025.105827

Can Li , Yecheng Luo , Yi Shu , Churong Ma , Kai Chen

引用次数: 0

Effect of 0.015 mol % cobalt (Co) doping on the broadband terahertz optical properties of congruent LiNbO3 single crystal

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-24 DOI: 10.1016/j.infrared.2025.105823

Lalit Kumar , Guruvandra Singh , R. Bhatt , Mukesh Kumar , M. Soharab , Indranil Bhaumik , Abhilasha Chouksey , Chitra Gautam , Mukesh Jewariya

{"title":"Effect of 0.015 mol % cobalt (Co) doping on the broadband terahertz optical properties of congruent LiNbO3 single crystal","authors":"Lalit Kumar , Guruvandra Singh , R. Bhatt , Mukesh Kumar , M. Soharab , Indranil Bhaumik , Abhilasha Chouksey , Chitra Gautam , Mukesh Jewariya","doi":"10.1016/j.infrared.2025.105823","DOIUrl":"10.1016/j.infrared.2025.105823","url":null,"abstract":"<div><div>Incorporating transition elements into a Non-Linear Optical (NLO) material offers a substantial potential for efficient broadband terahertz (THz), photorefractive, and NLO applications. Cobalt, a versatile transition metal, is particularly influential in modifying the nonlinear optical properties of efficient nonlinear optical single crystals. The undoped Congruent Lithium Niobate (LiNbO<sub>3</sub>, LN) and 0.015 mol % CoO-doped Congruent Lithium Niobate (Co:LN) single crystals are grown using the Czochralski technique along the z-direction in ambient air. The Powder X-ray diffraction (PXRD) studies confirm the crystalline perfection with different orientations of the diffraction planes. Raman spectroscopy confirmed the impact of cobalt doping on the lattice vibrational modes, evidenced by the altered intensity and full width at half maximum (FWHM) values, without shifting the vibrational peak positions of the observed vibrational mode<em>.</em> Further, to probe the terahertz-material interaction, a THz analysis is carried out on both crystals by employing the terahertz time-domain spectroscopy (THz-TDS) in transmission mode operated in the ambient air condition at room temperature. The terahertz optical parameters are derived from the transmission spectra and phase shift between the reference and sample signal. The 0.015 mol% Co doping significantly influences the THz optical parameters of the undoped LiNbO<sub>3</sub> single crystal. In addition, a theoretical Lorentz’s Damped Harmonic Oscillator (DHO) model is employed, which accurately describes the obtained THz response of both the crystals in the THz region.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105823"},"PeriodicalIF":3.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143706399","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

TiN nanoparticles anchored on porous carbon black: The synergistic effect of porosity, surface roughness and surface plasmon on high-performance broadband infrared absorption

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-24 DOI: 10.1016/j.infrared.2025.105819

Yu Xie, Quanjiang Lv, Tingzhen Chen, Dongliang Zhang, Siwei Liu, Haigang Hou, Guiwu Liu, Guanjun Qiao, Junlin Liu

{"title":"TiN nanoparticles anchored on porous carbon black: The synergistic effect of porosity, surface roughness and surface plasmon on high-performance broadband infrared absorption","authors":"Yu Xie, Quanjiang Lv, Tingzhen Chen, Dongliang Zhang, Siwei Liu, Haigang Hou, Guiwu Liu, Guanjun Qiao, Junlin Liu","doi":"10.1016/j.infrared.2025.105819","DOIUrl":"10.1016/j.infrared.2025.105819","url":null,"abstract":"<div><div>Porous carbon black loaded with TiN nanoparticles was developed as a broadband infrared (IR) absorber. The unique porous structure, characterized by variable pore sizes and random spatial distribution, effectively guides and absorbs electromagnetic waves across a broad wavelength range. The incorporation of TiN nanoparticles enhance the surface roughness, facilitating multiple reflection and scattering, thereby extending the light propagation path. This modification notably addresses the absorption deficiencies in the 3.5–6 μm wavelength range, significantly improving overall absorption efficiency. IR absorption tests revealed that the original film achieved an average absorption rate of approximately 93.7 % within the 2.5–20 μm range, while the addition of TiN nanoparticles increased the absorption rate to 95.73 %. Finite-difference time-domain simulations results demonstrated a significant increase in electric field intensity around the carbon surface and TiN nanoparticles at 5 μm, attributed to the radiative absorption properties of carbon and the surface plasmon characteristics of TiN at shorter wavelengths. This absorber layer shows high potential for IR sensor applications.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105819"},"PeriodicalIF":3.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725409","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

Efficient and high-precision image recognition in visible to near-infrared enabled by Bi2Te3/WS2 heterostructure photodetector

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-23 DOI: 10.1016/j.infrared.2025.105822

Yongfeng Jia , Xuming Shi , Zhihao Wu , Xiao Zhuo , Jiaxiang Guo , Tiange Zhao , Linhong Cao , Fang Wang , Peng Wang , Zhiping He , Xiujuan Zhuang , Qiandong Zhuang , Jin Wang , Yajun Fu

{"title":"Efficient and high-precision image recognition in visible to near-infrared enabled by Bi2Te3/WS2 heterostructure photodetector","authors":"Yongfeng Jia , Xuming Shi , Zhihao Wu , Xiao Zhuo , Jiaxiang Guo , Tiange Zhao , Linhong Cao , Fang Wang , Peng Wang , Zhiping He , Xiujuan Zhuang , Qiandong Zhuang , Jin Wang , Yajun Fu","doi":"10.1016/j.infrared.2025.105822","DOIUrl":"10.1016/j.infrared.2025.105822","url":null,"abstract":"<div><div>Owing to its exceptional carrier mobility and unique topological features, Bi<sub>2</sub>Te<sub>3</sub> emerges as an ideal material for crafting high-performance photodetectors. The synergistic integration of Bi<sub>2</sub>Te<sub>3</sub> photodetectors with convolutional neural networks (CNNs) holds the potential to enhance feature extraction robustness and target recognition accuracy. This study focuses on the optoelectronic properties of the Bi<sub>2</sub>Te<sub>3</sub>/WS<sub>2</sub> heterojunction and explores its application in Image recognition in combination with CNNs. By fabricating the Bi<sub>2</sub>Te<sub>3</sub>/WS<sub>2</sub> photodetector, the dark current of the device has been effectively reduced, enabling photodetection within the visible-near-infrared wavelength range. The device has a detectivity of 8.39 × 10<sup>8</sup> cm·Hz<sup>1/2</sup>·W<sup>−1</sup> and a response time of 185 μs/71 μs. Furthermore, the Bi<sub>2</sub>Te<sub>3</sub>/WS<sub>2</sub> photodetector enables high-resolution image imaging. Leveraging CNNs, the image recognition accuracy attains 88 %. This research not only illuminates the construction of Bi<sub>2</sub>Te<sub>3</sub> nanostructured optoelectronic heterojunction devices but also presents an innovative approach for image recognition applications.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105822"},"PeriodicalIF":3.1,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735254","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

Measuring the spectrum of terahertz pulses using the first-order autocorrelator based on Fabry-Perot cavity

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-21 DOI: 10.1016/j.infrared.2025.105820

Kang Jin , Shixing Zhang , Yuan Zhao , Chenxiang Hao , Nan Zhang , Bing Liu

{"title":"Measuring the spectrum of terahertz pulses using the first-order autocorrelator based on Fabry-Perot cavity","authors":"Kang Jin , Shixing Zhang , Yuan Zhao , Chenxiang Hao , Nan Zhang , Bing Liu","doi":"10.1016/j.infrared.2025.105820","DOIUrl":"10.1016/j.infrared.2025.105820","url":null,"abstract":"<div><div>Ultrashort terahertz (THz) pulse has a broad spectral bandwidth and essential applications in material identification and disease diagnosis. In this work, the cascaded Fabry-Perot interferometer is proposed to construct a Fabry-Perot cavity based first-order autocorrelator(FPAC) for measuring the spectrum of the ultrashort THz pulse. The FPAC is made up of two pieces of uncoated high resistivity float zone silicon wafers and can be regarded as three tandem Fabry-Perot interferometers/etalons. It can be demonstrated numerically that without any coating process to measure the spectrum of the THz pulse. Using the home-built FPAC, the spectrum of THz pulses generated by dual-color femtosecond laser filament and the THz transmission spectrum of the penicillin sodium tablet is measured, experimentally demonstrating the validity of the FPAC in THz spectrum detection. Compared to other THz spectrum detection methods, such as the Fourier transform spectrometer and THz time-domain spectral system, the FPAC has a more compact structure due to the utilization of the common-path interference setup, which can be used in narrow space for in situ detection.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105820"},"PeriodicalIF":3.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725465","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

Deep learning based spectral overlap separation for dual gases CO2/H2O detection with a 2004 nm laser source

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-19 DOI: 10.1016/j.infrared.2025.105821

Jianguo Zhang , Jiachen Sun , Jinghua Wu , Qiang Wang , Fupeng Wang

{"title":"Deep learning based spectral overlap separation for dual gases CO2/H2O detection with a 2004 nm laser source","authors":"Jianguo Zhang , Jiachen Sun , Jinghua Wu , Qiang Wang , Fupeng Wang","doi":"10.1016/j.infrared.2025.105821","DOIUrl":"10.1016/j.infrared.2025.105821","url":null,"abstract":"<div><div>Carbon dioxide (CO<sub>2</sub>) and water vapor (H<sub>2</sub>O) dual gas detection is realized within the same wavelength band by one laser source, giving low system complexity and high measurement accuracy. A neural network based on deep learning is developed to solve the cross-interference problem from the spectral overlap between CO<sub>2</sub> and H<sub>2</sub>O molecules. Absorption-induced 2nd harmonic model is established by simulation based on the theory of wavelength modulation spectroscopy (WMS) and calibrated by experimental data, then the calibrated model is used to conveniently generate a large dataset for training and testing the neural network. Verified by experiments, excellent linearity of R<sup>2</sup> <span><math><mrow><mo>≈</mo></mrow></math></span> 1 is achieved between the predicted concentrations and the true values for both CO<sub>2</sub> and H<sub>2</sub>O. The relative error is evaluated to be <span><math><mrow><mo><</mo></mrow></math></span> 0.3 % for CO<sub>2</sub> and <span><math><mrow><mo><</mo></mrow></math></span> 0.9 % for H<sub>2</sub>O by measuring 15 groups of CO<sub>2</sub>/H<sub>2</sub>O mixture. This study is a successful combination of WMS and deep learning to provide both capabilities of high-sensitive detection and spectral overlap separation, giving a promising direction for simultaneous measurement of multi-gases.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105821"},"PeriodicalIF":3.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682098","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

Surface lattice and silver coating assisted mid-infrared reflection reduction of micropore arrays etched in silicon wafers

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-19 DOI: 10.1016/j.infrared.2025.105817

Quang Minh Ngo , Xuan Bach Nguyen , Thanh Son Pham , Anh Tu Tran , Alexander Dolbik , Taisa Orehovskaya , Serguei Lazarouk

{"title":"Surface lattice and silver coating assisted mid-infrared reflection reduction of micropore arrays etched in silicon wafers","authors":"Quang Minh Ngo , Xuan Bach Nguyen , Thanh Son Pham , Anh Tu Tran , Alexander Dolbik , Taisa Orehovskaya , Serguei Lazarouk","doi":"10.1016/j.infrared.2025.105817","DOIUrl":"10.1016/j.infrared.2025.105817","url":null,"abstract":"<div><div>In this work, we report the design, numerical simulation, and fabrication of mid-infrared metasurfaces consisting of two-dimensional periodic arrays of silver coated-micropores patterned on silicon wafer. The structures with regular arrangements of square and triangular lattices, lattice constants, pore diameters, and silver coated micropore thicknesses were designed, and their optical characteristics were analyzed using the finite-difference time-domain method. The designed reflectors work in the mid-infrared range of 7–24 µm and strongly depend on the surface lattice, silver film, and fill-factor of the silver taken place in the silicon wafer. By introducing and applying the electrochemical fabrication processes for silicon wafers, the diameters of ∼ 4–15 µm and depth of ∼ 30–50 µm of the micropores in silicon wafer depending on the anodic current density of ∼ 4–10 mA/cm<sup>2</sup> at given anodization time of ∼ 5–30 min, and then the silver films of ∼ 0.2–1.5 µm formed into micropores have been shown. The fabricated samples were characterized using Fourier transform infrared reflection measurements, which showed good agreement with the simulations. We have demonstrated an alternative implementation of the reflectance metasurfaces working in the mid-infrared region without using the precise fabrication techniques. This work provides general guidelines and useful approaches for designing mid-infrared metasurface devices.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105817"},"PeriodicalIF":3.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682099","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

SiamTU: Hyperspectral video tracking against appearance changes using improved SiameGAT with adaptive template updating

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-19 DOI: 10.1016/j.infrared.2025.105811

Jialing Chen , Kun Qian , Wei Song , Yonghao Qiu , Shiqing Wang

{"title":"SiamTU: Hyperspectral video tracking against appearance changes using improved SiameGAT with adaptive template updating","authors":"Jialing Chen , Kun Qian , Wei Song , Yonghao Qiu , Shiqing Wang","doi":"10.1016/j.infrared.2025.105811","DOIUrl":"10.1016/j.infrared.2025.105811","url":null,"abstract":"<div><div>Siamese-based tracking algorithms are gaining popularity in hyperspectral tracking because of their effectiveness in feature matching. Nevertheless, these techniques require refinement to handle significant variations in the target’s appearance, including deformation, occlusion, and small size, more effectively. Therefore, we propose the SiamTU (SiameGAT with Template Updating) tracker, which includes band selection, an improved graph attention based Siamese model, and an adaptive template update mechanism, using public hyperspectral videos. Initially, a band selection technique employing the neighborhood group normalized filter is utilized to obtain three high-significance bands. The resultant synthesized image is then used as the input for the tracker. Following this, a module for efficient feature refinement is developed to improve the features that have been encoded. The model has the ability to simultaneously concentrate on both local details and overall structures by extracting features from the input at various scales. Moreover, an embedded template update network enhances the SiamTU’s capability referring to appearance changes effectively. Results from tests on the hyperspectral dataset reveal that SiamTU is more effective than comparable algorithms, attaining a success rate of 0.617 and a precision value of 0.939. The code will be accessible at <span><span>https://github.com/ctb2/SiamTU</span><svg><path></path></svg></span>.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105811"},"PeriodicalIF":3.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682100","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

Spacecraft damage infrared detection for hypervelocity impact based on multi-objective optimal clustering algorithm

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-17 DOI: 10.1016/j.infrared.2025.105810

Yan Gao , Chun Yin , Xuegang Huang , Jiuwen Cao , Sara Dadras , Anhua Shi , Junyang Liu

引用次数: 0

A long working distance optical microscope for synchrotron infrared and Raman microspectroscopy

IF 3.1 3区物理与天体物理

Infrared Physics & Technology Pub Date : 2025-03-16 DOI: 10.1016/j.infrared.2025.105818

Jiluan Zhang , Shiyu Xie , Liangxin Qiao, Chuansheng Hu, Hengjie Liu, Zeming Qi

{"title":"A long working distance optical microscope for synchrotron infrared and Raman microspectroscopy","authors":"Jiluan Zhang , Shiyu Xie , Liangxin Qiao, Chuansheng Hu, Hengjie Liu, Zeming Qi","doi":"10.1016/j.infrared.2025.105818","DOIUrl":"10.1016/j.infrared.2025.105818","url":null,"abstract":"<div><div>A long working distance optical microscope was developed at the infrared beamline on National Synchrotron Radiation Laboratory to address the increasing demand infrared microspectroscopy under external fields (temperature, pressure etc.) and in-situ/operando conditions. This microscope is configured with a pair of 15 × Schwarzschild objectives with 45 mm working distance and a numerical aperture (NA) of 0.5 for transmission and reflection infrared micro-spectrum measurements. The utilization of a high-brightness synchrotron infrared light source ensures the attainment of diffraction-limited spatial resolution along with an excellent signal-to-noise ratio. In addition, the system integrates a Raman microscope, allowing for combined infrared and Raman microspectroscopic measurements without reloading the sample, ensuring that measurements are made under the same sample conditions. The versatile optical microscope offers a powerful tool for combining synchrotron infrared and Raman microspectroscopy measurements of microscale samples under various external fields such as high pressure, low temperature, as well as in-situ/operando chemical reactions. Consequently, it provides a flexible research platform for the study of condensed matter physics, energy and catalysis, materials science, geology, polymer and other related research fields.</div></div>","PeriodicalId":13549,"journal":{"name":"Infrared Physics & Technology","volume":"147 ","pages":"Article 105818"},"PeriodicalIF":3.1,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643499","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