Spectra of HF mixtures with helium were recorded at elevated pressures ranging from 1 to 11 atm at 297.8(2) K. The rovibrational lines in the first overtone band were fitted with Voigt and Rautian profiles. The broadening and shifting coefficients for 19 lines in the first overtone are reported. An estimate for the velocity changing shifting coefficients for 11 lines is obtained. To the best of our knowledge, most of the reported line parameters are novel. Herman–Wallis coefficients were determined from the line intensity distribution as well.
{"title":"Helium-induced broadening and shifting in the first overtone of hydrogen fluoride","authors":"I.A. Tolstikov , A.V. Domanskaya , O.O. Diachkova , R.E. Asfin","doi":"10.1016/j.jqsrt.2025.109787","DOIUrl":"10.1016/j.jqsrt.2025.109787","url":null,"abstract":"<div><div>Spectra of HF mixtures with helium were recorded at elevated pressures ranging from 1 to 11 atm at 297.8(2) K. The rovibrational lines in the first overtone band were fitted with Voigt and Rautian profiles. The broadening and shifting coefficients for 19 lines in the first overtone are reported. An estimate for the velocity changing shifting coefficients for 11 lines is obtained. To the best of our knowledge, most of the reported line parameters are novel. Herman–Wallis coefficients were determined from the line intensity distribution as well.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"351 ","pages":"Article 109787"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145689299","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}
Pub Date : 2026-03-01Epub Date: 2025-11-19DOI: 10.1016/j.jqsrt.2025.109758
Sarah Clavier , Michael Rey , Jeanna Buldyreva
Nitrogen-broadening coefficients for ethylene absorption lines in the band are computed theoretically to fill in the enormous gaps existing in available experimental data. A semi-empirical method relying on the Anderson theory is employed for this purpose, with the model parameters adjusted on some rare room-temperature measurements and used further for calculations in extended temperature ranges. The spectroscopically active molecule CH is rigorously treated as an asymmetric top, and its energy levels and wavefunctions are accurately computed by a quantum-chemistry methodology based on ab initio potential energy surfaces. Theoretical broadening values are obtained for the temperature range 100–1000 K relevant to studies of planetary and exoplanetary atmospheres. These values are further analyzed by the traditional power law to get the associated temperature-dependence exponents. Comparisons of the computed theoretical results with previous measurements and calculations are provided at a low temperature of 173 K to validate the theoretical method chosen. Since the power law describes perfectly the considered temperature range, the sets of reference-temperature broadening coefficients and their temperature exponents can be safely used for higher temperatures where semi-classical approaches applicability only grows. These data are provided for the quantum numbers , and the three -, -, -branches of the band, i.e. represent the most comprehensive up-to-date description of N-broadened ethylene linewidths suitable for integration into spectroscopic databases and high-temperature simulations of (exo)planetary atmospheres.
从理论上计算了ν7波段乙烯吸收谱线的氮展宽系数，以填补现有实验数据中存在的巨大空白。为此，采用了一种基于安德森理论的半经验方法，在一些罕见的室温测量上调整模型参数，并进一步用于扩大温度范围的计算。对具有光谱活性的分子C2H4进行了严格的非对称顶处理，并采用基于从头算势能面的量子化学方法精确计算了其能级和波函数。得到了与行星和系外行星大气研究有关的100 - 1000k温度范围的理论展宽值。利用传统幂律法对这些值进行进一步分析，得到相应的温度依赖指数。在173 K的低温条件下，将计算的理论结果与以往的测量和计算结果进行了比较，以验证所选择的理论方法。由于幂律完美地描述了所考虑的温度范围，参考温度展宽系数集合及其温度指数可以安全地用于更高的温度，而半经典方法的适用性只会增加。这些数据是为量子数0≤J≤47，K≤26和ν7波段的三个P-， Q-， r -分支提供的，即代表了最新最全面的n2加宽乙烯线宽描述，适合集成到光谱数据库和（外）行星大气的高温模拟中。
{"title":"N2-broadening coefficients and their temperature exponents for ethylene lines: A semi-empirical approach for (exo)planetary studies","authors":"Sarah Clavier , Michael Rey , Jeanna Buldyreva","doi":"10.1016/j.jqsrt.2025.109758","DOIUrl":"10.1016/j.jqsrt.2025.109758","url":null,"abstract":"<div><div>Nitrogen-broadening coefficients for ethylene absorption lines in the <span><math><msub><mrow><mi>ν</mi></mrow><mrow><mn>7</mn></mrow></msub></math></span> band are computed theoretically to fill in the enormous gaps existing in available experimental data. A semi-empirical method relying on the Anderson theory is employed for this purpose, with the model parameters adjusted on some rare room-temperature measurements and used further for calculations in extended temperature ranges. The spectroscopically active molecule C<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>H<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> is rigorously treated as an asymmetric top, and its energy levels and wavefunctions are accurately computed by a quantum-chemistry methodology based on <em>ab initio</em> potential energy surfaces. Theoretical broadening values are obtained for the temperature range 100–1000 K relevant to studies of planetary and exoplanetary atmospheres. These values are further analyzed by the traditional power law to get the associated temperature-dependence exponents. Comparisons of the computed theoretical results with previous measurements and calculations are provided at a low temperature of 173 K to validate the theoretical method chosen. Since the power law describes perfectly the considered temperature range, the sets of reference-temperature broadening coefficients and their temperature exponents can be safely used for higher temperatures where semi-classical approaches applicability only grows. These data are provided for the quantum numbers <span><math><mrow><mn>0</mn><mo>≤</mo><mi>J</mi><mo>≤</mo><mn>47</mn></mrow></math></span>, <span><math><mrow><mi>K</mi><mo>≤</mo><mn>26</mn></mrow></math></span> and the three <span><math><mi>P</mi></math></span>-, <span><math><mi>Q</mi></math></span>-, <span><math><mi>R</mi></math></span>-branches of the <span><math><msub><mrow><mi>ν</mi></mrow><mrow><mn>7</mn></mrow></msub></math></span> band, i.e. represent the most comprehensive up-to-date description of N<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>-broadened ethylene linewidths suitable for integration into spectroscopic databases and high-temperature simulations of (exo)planetary atmospheres.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"350 ","pages":"Article 109758"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145559886","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}
Pub Date : 2026-03-01Epub Date: 2026-01-07DOI: 10.1016/j.jqsrt.2026.109808
JingYing Li, XiaoXiao Song, ShanShan Fan
The spectral radiation characteristics of aircraft exhaust plumes are significantly influenced by the volumetric optical properties of alumina-carbon soot hybrid media. This study develops a dedicated computational algorithm to determine these properties by establishing realistic models for alumina and carbon soot clusters in the plume and derives formulas for calculating the volumetric optical properties per unit volume of the hybrid medium. The characteristics are analyzed in the ultraviolet (280 nm) and infrared (4.3 µm) bands. The results show that: (1) In the ultraviolet band, the extinction process is primarily governed by scattering from alumina particles, with carbon soot particles accounting for over 99% of the absorption. Conversely, in the infrared band, extinction is dominated by absorption from carbon soot particles, while the contribution of alumina particles to extinction is only 2%–4.5%. (2) In the ultraviolet band, the volumetric scattering phase function of the hybrid medium exhibits strong forward scattering, which decreases with increasing carbon soot content. In the infrared band, the scattering phase function becomes relatively flat, demonstrating isotropic scattering characteristics. (3) Regarding polarization properties, the volumetric linear polarization degree in the ultraviolet band is predominantly negative, and the circular polarization displays a distribution from strong right-handed in the forward direction to strong left-handed in the backward direction. In the infrared band, the linear polarization exhibits a strictly even-symmetric positive distribution about 90°, and the circular polarization shows strict central symmetry about 90°. The conclusions of this study provide a theoretical basis for multi-band radiation characteristic modeling and target identification of high-speed aircraft exhaust plumes.
{"title":"Volumetric optical properties of alumina-carbon soot hybrid medium in high-speed aircraft plumes","authors":"JingYing Li, XiaoXiao Song, ShanShan Fan","doi":"10.1016/j.jqsrt.2026.109808","DOIUrl":"10.1016/j.jqsrt.2026.109808","url":null,"abstract":"<div><div>The spectral radiation characteristics of aircraft exhaust plumes are significantly influenced by the volumetric optical properties of alumina-carbon soot hybrid media. This study develops a dedicated computational algorithm to determine these properties by establishing realistic models for alumina and carbon soot clusters in the plume and derives formulas for calculating the volumetric optical properties per unit volume of the hybrid medium. The characteristics are analyzed in the ultraviolet (280<!--> <!-->nm) and infrared (4.3<!--> <!-->µm) bands. The results show that: (1) In the ultraviolet band, the extinction process is primarily governed by scattering from alumina particles, with carbon soot particles accounting for over 99% of the absorption. Conversely, in the infrared band, extinction is dominated by absorption from carbon soot particles, while the contribution of alumina particles to extinction is only 2%–4.5%. (2) In the ultraviolet band, the volumetric scattering phase function of the hybrid medium exhibits strong forward scattering, which decreases with increasing carbon soot content. In the infrared band, the scattering phase function becomes relatively flat, demonstrating isotropic scattering characteristics. (3) Regarding polarization properties, the volumetric linear polarization degree in the ultraviolet band is predominantly negative, and the circular polarization displays a distribution from strong right-handed in the forward direction to strong left-handed in the backward direction. In the infrared band, the linear polarization exhibits a strictly even-symmetric positive distribution about 90°, and the circular polarization shows strict central symmetry about 90°. The conclusions of this study provide a theoretical basis for multi-band radiation characteristic modeling and target identification of high-speed aircraft exhaust plumes.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"352 ","pages":"Article 109808"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928118","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}
Pub Date : 2026-03-01Epub Date: 2026-01-08DOI: 10.1016/j.jqsrt.2026.109816
Yahya Baykal
Transmittance is a metric that provides information on how much of the intensity is transferred to the receiver for a given medium. One of the definitions of transmittance is the ratio of the average received intensity in the presence of turbulence to the received intensity in the absence of turbulence. Under such definition, transmittance is found in an anisotropic jet engine exhaust turbulent environment. For various receiver points, transmittances versus the wireless optical communication (WOC) link and anisotropic jet engine exhaust turbulence parameters are presented. The results are useful for designers of WOC links that are installed in the premises such as the airports that possess jet engine exhaust turbulence.
{"title":"Transmittance of Gaussian beam in anisotropic jet engine exhaust turbulence","authors":"Yahya Baykal","doi":"10.1016/j.jqsrt.2026.109816","DOIUrl":"10.1016/j.jqsrt.2026.109816","url":null,"abstract":"<div><div>Transmittance is a metric that provides information on how much of the intensity is transferred to the receiver for a given medium. One of the definitions of transmittance is the ratio of the average received intensity in the presence of turbulence to the received intensity in the absence of turbulence. Under such definition, transmittance is found in an anisotropic jet engine exhaust turbulent environment. For various receiver points, transmittances versus the wireless optical communication (WOC) link and anisotropic jet engine exhaust turbulence parameters are presented. The results are useful for designers of WOC links that are installed in the premises such as the airports that possess jet engine exhaust turbulence.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"352 ","pages":"Article 109816"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145956756","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}
Pub Date : 2026-03-01Epub Date: 2026-01-08DOI: 10.1016/j.jqsrt.2026.109817
Yibai Zhong , Xiu Liu , Zexiao Wang , Jingyi Zou , Tianyi Huang , Sen Lin , Xiao Luo , Zhuo Li , Rui Cheng , Xu Zhang , Sheng Shen
In this work, we design and fabricate tunable pixelated infrared emitter arrays based on graphene transistors. We use finite element analysis to simulate a 5-by-3 pixelated emitter array, where localized heating area can be confined within a size of 25 μm and reaches more than 10 K temperature rise within 3 μs. By applying fast sweeping scheme with electrostatic voltage inputs, tunable surface patterns assembling dynamic alphabetical letters of microscale sizes are demonstrated and captured via thermal mapping with its thermal emission variation caused by localized temperature rise. Our results show that thermal emission can be highly localized and reconfigurable both spatially and temporally, which paves the way for developing and boosting the performance of microscale and nanoscale thermally driven devices for communication, characterization, sensing and actuation.
{"title":"Tunable pixelated graphene based thermal infrared emitter array and its electrothermal characterization","authors":"Yibai Zhong , Xiu Liu , Zexiao Wang , Jingyi Zou , Tianyi Huang , Sen Lin , Xiao Luo , Zhuo Li , Rui Cheng , Xu Zhang , Sheng Shen","doi":"10.1016/j.jqsrt.2026.109817","DOIUrl":"10.1016/j.jqsrt.2026.109817","url":null,"abstract":"<div><div>In this work, we design and fabricate tunable pixelated infrared emitter arrays based on graphene transistors. We use finite element analysis to simulate a 5-by-3 pixelated emitter array, where localized heating area can be confined within a size of 25 μm and reaches more than 10 K temperature rise within 3 μs. By applying fast sweeping scheme with electrostatic voltage inputs, tunable surface patterns assembling dynamic alphabetical letters of microscale sizes are demonstrated and captured via thermal mapping with its thermal emission variation caused by localized temperature rise. Our results show that thermal emission can be highly localized and reconfigurable both spatially and temporally, which paves the way for developing and boosting the performance of microscale and nanoscale thermally driven devices for communication, characterization, sensing and actuation.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"352 ","pages":"Article 109817"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145956902","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}
Pub Date : 2026-03-01Epub Date: 2026-01-05DOI: 10.1016/j.jqsrt.2025.109803
Andrei A. Vigasin , Jonathan Tennyson , Oleg L. Polyansky
Mikhail Yurievich Tretyakov (1958–2024) was a leading spectroscopist working at terahertz and microwave wavelengths. He made substantial advances in sub-millimeter spectrometers and performed spectroscopic studies on isolated gaseous, molecular complexes and, in particular, the water dimer. He also studied molecular interactions and line shapes, using them to develop ideas about the physics of the water continuum. In this memorial paper, we review Mikail Tretyakov’s life and his major scientific achievements.
{"title":"Mikhail Tretyakov’s scientific legacy","authors":"Andrei A. Vigasin , Jonathan Tennyson , Oleg L. Polyansky","doi":"10.1016/j.jqsrt.2025.109803","DOIUrl":"10.1016/j.jqsrt.2025.109803","url":null,"abstract":"<div><div>Mikhail Yurievich Tretyakov (1958–2024) was a leading spectroscopist working at terahertz and microwave wavelengths. He made substantial advances in sub-millimeter spectrometers and performed spectroscopic studies on isolated gaseous, molecular complexes and, in particular, the water dimer. He also studied molecular interactions and line shapes, using them to develop ideas about the physics of the water continuum. In this memorial paper, we review Mikail Tretyakov’s life and his major scientific achievements.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"352 ","pages":"Article 109803"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145902339","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}
Pub Date : 2026-03-01Epub Date: 2025-11-21DOI: 10.1016/j.jqsrt.2025.109761
Prakash Gautam , Justin B. Maughan , Hans Moosmüller , Kurt Ehlers , Christopher M. Sorensen
Polarimetry is a valuable technique for remote sensing of atmospheric aerosol particles, with the linear depolarization ratio (LDR) being a key parameter used to characterize particle properties. This study investigates the LDRs of various aerosol particles, including nearly spherical and irregular aluminum oxide (Al2O3), Arizona Road Dust (AZRD), and molybdenum disulfide (MoS2) particles, using both laboratory measurements conducted at a wavelength of 532 nm over a scattering angle range from 0.32° to 177.6° and theoretical model computations for spheroids and Gaussian random spheres. The results demonstrate that the LDR is strongly influenced by particle size, shape, and refractive index, with significant variations across different scattering angles. In the forward-scattering regime, LDR values are small due to scattering being dominated by diffraction, while in the side-scattering regime, LDR increases, peaking around 140° to 160°, before decreasing in the back-scattering regime. This study further explores the relationship between LDR and particle morphology, as well as the impact of the imaginary part of the complex refractive index on LDR, with results showing that higher absorption leads to lower LDRs. Overall, this study contributes to a better understanding of how LDR behaves for different particle types and scattering angles, enhancing our understanding of the optical properties of aerosol particles towards improved polarimetric remote sensing retrievals.
{"title":"Study of linear depolarization ratios across a wide range of scattering angles for particles of diverse sizes, shapes, and complex refractive indices","authors":"Prakash Gautam , Justin B. Maughan , Hans Moosmüller , Kurt Ehlers , Christopher M. Sorensen","doi":"10.1016/j.jqsrt.2025.109761","DOIUrl":"10.1016/j.jqsrt.2025.109761","url":null,"abstract":"<div><div>Polarimetry is a valuable technique for remote sensing of atmospheric aerosol particles, with the linear depolarization ratio (LDR) being a key parameter used to characterize particle properties. This study investigates the LDRs of various aerosol particles, including nearly spherical and irregular aluminum oxide (Al<sub>2</sub>O<sub>3</sub>), Arizona Road Dust (AZRD), and molybdenum disulfide (MoS<sub>2</sub>) particles, using both laboratory measurements conducted at a wavelength of 532 nm over a scattering angle range from 0.32° to 177.6° and theoretical model computations for spheroids and Gaussian random spheres. The results demonstrate that the LDR is strongly influenced by particle size, shape, and refractive index, with significant variations across different scattering angles. In the forward-scattering regime, LDR values are small due to scattering being dominated by diffraction, while in the side-scattering regime, LDR increases, peaking around 140° to 160°, before decreasing in the back-scattering regime. This study further explores the relationship between LDR and particle morphology, as well as the impact of the imaginary part of the complex refractive index on LDR, with results showing that higher absorption leads to lower LDRs. Overall, this study contributes to a better understanding of how LDR behaves for different particle types and scattering angles, enhancing our understanding of the optical properties of aerosol particles towards improved polarimetric remote sensing retrievals.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"350 ","pages":"Article 109761"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145567716","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}
Pub Date : 2026-03-01Epub Date: 2025-11-11DOI: 10.1016/j.jqsrt.2025.109740
Gennadiy Burlak , Gustavo Medina-Ángel
The semiclassical dynamics of optical nanoemitters (NEs) arranged in the shape of a Bernoulli lemniscate (LB), enhanced by plasmon–polaritons (PPs) in a lattice of conducting nanorings (NRs), are investigated. The coupling of PP and NE is mediated by a common optical field and NE with a finite lifetime of pumping are considered. Using the FDTD approach, it is found that the field structure and the NE dynamics significantly depend on the plasma frequency of the NR. If the intersection point of the LB branches (the region of high NE density) is located inside the NR gaps, a significant increase in the laser field strength and quantum cross-correlations in the NE subsystem occurs. This effect may be exploited to create new types of emitting devices using dispersed nano-objects in modern nanoelectronics.
{"title":"Semiclassical dynamics of the lemniscate ordered emitters enhanced by plasmon-polaritons in nanorings","authors":"Gennadiy Burlak , Gustavo Medina-Ángel","doi":"10.1016/j.jqsrt.2025.109740","DOIUrl":"10.1016/j.jqsrt.2025.109740","url":null,"abstract":"<div><div>The semiclassical dynamics of optical nanoemitters (NEs) arranged in the shape of a Bernoulli lemniscate (LB), enhanced by plasmon–polaritons (PPs) in a lattice of conducting nanorings (NRs), are investigated. The coupling of PP and NE is mediated by a common optical field and NE with a finite lifetime of pumping are considered. Using the FDTD approach, it is found that the field structure and the NE dynamics significantly depend on the plasma frequency of the NR. If the intersection point of the LB branches (the region of high NE density) is located inside the NR gaps, a significant increase in the laser field strength and quantum cross-correlations in the NE subsystem occurs. This effect may be exploited to create new types of emitting devices using dispersed nano-objects in modern nanoelectronics.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"350 ","pages":"Article 109740"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145498984","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}
Pub Date : 2026-03-01Epub Date: 2026-01-15DOI: 10.1016/j.jqsrt.2026.109829
Alexandra A. Idrisova , Armen D. Sargsyan , David H. Sarkisyan , Victor I. Balykin , Anton E. Afanasiev
We studied spectral properties of atoms in a microcell of 80 m length using the microwave-optical double-resonance (DR) spectroscopy in the presence of a magnetic field. The obtained spectra were compared with similar ones from atoms in a macroscopic vapor cell. The comparison demonstrates the potential of microcells for implementation of compact magnetometers. The effect of radiation trapping has been investigated as a limiting factor of the width of double-resonance spectral lines.
{"title":"Microwave-optical double-resonance spectroscopy of rubidium-87 atoms in a microcell","authors":"Alexandra A. Idrisova , Armen D. Sargsyan , David H. Sarkisyan , Victor I. Balykin , Anton E. Afanasiev","doi":"10.1016/j.jqsrt.2026.109829","DOIUrl":"10.1016/j.jqsrt.2026.109829","url":null,"abstract":"<div><div>We studied spectral properties of atoms in a microcell of 80 <span><math><mi>μ</mi></math></span>m length using the microwave-optical double-resonance (DR) spectroscopy in the presence of a magnetic field. The obtained spectra were compared with similar ones from atoms in a macroscopic vapor cell. The comparison demonstrates the potential of microcells for implementation of compact magnetometers. The effect of radiation trapping has been investigated as a limiting factor of the width of double-resonance spectral lines.</div></div>","PeriodicalId":16935,"journal":{"name":"Journal of Quantitative Spectroscopy & Radiative Transfer","volume":"352 ","pages":"Article 109829"},"PeriodicalIF":1.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145995434","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}
Pub Date : 2026-03-01Epub Date: 2026-01-11DOI: 10.1016/j.jqsrt.2026.109815
Guoxia Han , Kaiqi Liu , Feiyang Zhang , Yuhui Peng , Yihan Tian , Xiaolong Liu , Xianghua Yu
Combining the advantages of both auto-focusing Airy beams and vortex beams, the vortex auto-focusing Airy (VAFA) beam has received increasing attentions. However, conventional methods to generate VAFA beams usually require the utilization of bulky devices and complex optical systems, and the applications of VAFA beams are rarely reported. In this work, a novel method to generate and modulate multimode VAFA beams with a single monolayer metasurface is proposed based on the angularly spacing arrangement array and polarization multiplexing. Through spatial multiplexing and polarization multiplexing, we have significantly expanded the modulation capacity of a single-layer metasurface, enabling the synchronous and independent control of multiple optical channels. Based on this approach, we achieved complex manipulation of multimode VAFA beams and the generation of VAFA beams array. Additionally, leveraging the VAFA beam arrays, we designed a polarization-detection metasurface capable of full-polarization states detection. This work not only offers a fresh perspective on the flexible production of multiple beams with a single monolayer metasurface, but also presents the applications in the field of polarization detection of complex Airy beams, holding great potential for a wide range of applications in laser processing and optical communication.
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