Article
Optics
Jianqi Shen, Shiliang Zhong, Jianxin Lin
Summary: This paper presents an indirect method that utilizes the spherical expansion of a scalar potential function to obtain the BSCs of beam fields, making the calculation easier and faster. The method is rigorous and flexible for different-shaped beams.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Review
Optics
Gerard Gouesbet, Leonardo Andre Ambrosio
Summary: The study focuses on the Rayleigh limit of generalized Lorenz-Mie theory for on-axis beams, specifically non-dark axisymmetric beams and dark axisymmetric beams. This work complements previous research and is accompanied by a mini-review to provide an overview of the issue.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2021)
Article
Optics
Jianqi Shen, Haitao Yu
Summary: In this paper, a new quadrature method for determining the beam shape coefficients (BSCs) of shaped beams using azimuthal and radial integrals is presented. The method is outlined and validated using the tilted plane wave and Gaussian beam as examples. Numerical results show that the proposed method can be a powerful alternative tool for fast and rigorous calculations of BSCs in spherical particle scattering scenarios where analytical solutions are not feasible and numerical evaluations are necessary.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Article
Optics
Gerard Gouesbet, Luiz Felipe Machado Votto, Leonardo Andre Ambrosio, Jiajie Wang
Summary: This paper explores the symmetries of laser beam shape coefficients, extending known symmetries to new families. Examples and counter-examples are provided to illustrate these symmetries, and formal laboratories are proposed as a way to discover even more symmetries.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2021)
Review
Optics
Luiz Felipe Votto, Abdelghani Chafiq, Gerard Gouesbet, Leonardo Andre Ambrosio, Abdelmajid Belafhal
Summary: The Ince-Gaussian beams are included in the framework of the generalized Lorenz-Mie theory through their expansions in terms of Laguerre-Gaussian beams. The beam shape coefficients are derived based on the expressions of Laguerre-Gaussian beam shape coefficients. This allows for a more straightforward computation of the coefficients and an analysis of the implications of the finite series method in the context of the GLMT framework.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Article
Optics
Zhijie Chen, Wei Xiong, Tengfang Kuang, Miao Peng, Xiaofei Zeng, Xiang Han, Xinlin Chen, Guangzong Xiao, Hui Luo
Summary: This study presents two types of asymmetric counter-propagating dual-beam optical traps with different numerical aperture and trapping power. These traps can eliminate the multi-equilibrium positions that occur when the two foci of the trap are not coincided. The asymmetric dual-beam trap exhibits significantly higher axial and transverse trapping stiffness and width compared to the standard dual-beam trap with the same or higher average numerical aperture. This asymmetric dual-beam optical trap has important implications for precision measurement, basic physics, and biomaterials research.
EUROPEAN PHYSICAL JOURNAL D
(2022)
Review
Optics
Gerard Gouesbet, James A. Lock, Yi-Ping Han, Jiajie Wang
Summary: This paper serves as a commentary and rebuttal to a recently published article in the Journal of Quantitative Spectroscopy and Radiative Transfer, addressing the computation of scattering properties between an arbitrary electromagnetic shaped beam and a homogeneous sphere. The discussion extends to more general cases, including arbitrary shaped particles within the T matrix formulation framework, while also reviewing the use of angular spectrum decomposition in light scattering.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2021)
Article
Optics
Jing Bai, Xuan Liu, Cheng-xian Ge, Zhen-sen Wu, Xiao-xiao Zhang
Summary: We studied the optical trapping force exerted on non-uniform chiral stratified spheres using a high-order Bessel beam. By comparing with existing reference, we validated the present theories. Numerical simulations considering various parameters showed that different chirality distributions significantly affect the trapping characteristics, and a stable three-dimensional capture can be achieved by selecting appropriate incident beam and particle parameters. These theoretical investigations offer an analytical method for understanding the interaction between light and more complex stratified chiral cells, thus providing an encouraging approach for designing better optical manipulation systems.
Article
Optics
Jianxin Lin, Shiliang Zhong, Jianqi Shen
Summary: This paper presents a new deduction method for formulating the beam shape coefficients using the radial quadrature method. The equivalence between the radial quadrature and the finite series method is confirmed, allowing for simplified and faster numerical calculation of the coefficients. Additionally, the paper establishes finite series expansions of the associated Legendre functions.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION
(2023)
Article
Optics
Luiz Felipe Machado Votto, Gerard Gouesbet, Leonardo Andre Ambrosio
Summary: Due to recent developments in generalized Lorenz-Mie theories (GLMTs), there is a renewed interest in the finite series (FS) method. However, the lack of flexibility in its earlier statements has led to its neglect since the 1990s. By dissecting the later works and exploring possibilities for generalization, simplification, and organization, a more accessible formulation of the FS method has been proposed.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Article
Optics
Leonardo Andre Ambrosio, Jiajie Wang, Gerard Gouesbet
Summary: Based on the adjoint boundary value problem proposed by Zulehner and Rohatschek [1] decades ago, analytic and closed-form expressions for the photophoretic forces exerted by arbitrary-shaped beams on homogeneous and low-loss spherical particles are derived in both the free molecular and slip flow regimes. The asymmetry vector for arbitrary refractive index particles is explicitly calculated by expanding the internal electromagnetic fields using the generalized Lorenz-Mie theory (GLMT). The proposed approach is the first systematic attempt to incorporate GLMT into the field of photophoresis and may be extended to spheroids and find important applications in optical trapping and manipulation of microparticles, geoengineering, particle levitation, optical trap displays, and other areas.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2022)
Article
Optics
Luiz Felipe Votto, Leonardo Ambrosio, Gerard Gouesbet, Jiajie Wang
Summary: This paper presents a thorough study of the mathematical and computational nuances of the Finite Series (FS) method for Lens-Focused Laguerre-Gaussian beams, comparing it with other known methods and concluding that a properly implemented FS algorithm is generally the most preferable option.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2021)
Article
Optics
Gerard Gouesbet
Summary: The study examines the optical forces exerted by off-axis Bessel beams on Rayleigh particles, focusing on the existence of axicon forces in addition to the classical scattering and gradient forces. Results obtained in the more restricted case of on-axis beams confirm previous findings and help clarify their meaning, while also addressing the distinction between dark and non-dark beams. The question of whether the generalized Lorenz-Mie theory for Rayleigh particle aligns with the usual dipole theory is also raised.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2021)
Article
Optics
Nobuhiro Moteki
Summary: This study presents a theoretical and experimental basis for measuring the complex forward-scattering amplitude of single particles through self-reference interferometry. The proposed CAS-v1 protocol aims to utilize self-reference interferometry effectively for inline measurements of single sub- and super-micron particles, facilitating real-time particle measurements in various scientific fields.
Review
Optics
Leonardo Andre Ambrosio
Summary: This paper presents an analytical approach to incorporate zero-order continuous frozen waves (FWs), a specific class of non-diffracting beams, into the framework of the generalized Lorenz-Mie theory (GLMT). The approach resolves two main drawbacks observed in previous work, which are related to the computation of beam shape coefficients. Examples and field reconstructions are provided for FWs with different polarizations. The approach is significant for using continuous FWs as alternative laser beams and accurately calculating their optical properties in the field of light scattering. (c) 2022 Elsevier Ltd. All rights reserved.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Article
Optics
Luiz Felipe Votto, Abdelghani Chafiq, Abdelmajid Belafhal, Gerard Gouesbet, Leonardo Andre Ambrosio
Summary: This paper describes the derivation of shape coefficients for scalar Hermite-Gaussian beams from the coefficients of Laguerre-Gaussian beams. It analyzes their behavior and compares the resulting solutions with ideal paraxial counterparts.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
M. Lazrek, Z. Hricha, A. Belafhal
Summary: Based on the extended Huygens-Fresnel diffraction integral, the analytical expression of the average intensity for a vortex cosine hyperbolic-Gaussian beam propagating in oceanic turbulence is derived. The propagation properties of the beam in oceanic turbulence and the effects of initial beam parameters are discussed. The results are important for applications in optical underwater communication and remote sensing domain.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
S. Chib, L. Dalil-Essakali, A. Belafhal
Summary: In this paper, a comparative analysis of Generalized Laguerre-Gaussian Schell-model beams through a paraxial ABCD optical system in a turbulent atmosphere is investigated. Analytical expressions for the spectral density in the receiver plane of the beams are derived based on the extended Huygens-Fresnel diffraction integral. Numerical results show that the profile of these Schell-model beams changes shape during propagation, influenced by the source coherence parameters and atmospheric turbulence strength.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Ahmed Abdulrab Ali Ebrahim, Mohamed A. Swillam, Abdelmajid Belafhal
Summary: This research applies the generalized Huygens-Fresnel diffraction integral to study the propagation of Circular Lorentz-Gaussian beams through an ABCD optical system and a Spiral Phase Plate. The interference of these beams with the considered optical elements allows for the generation of the Superposition of Humbert-Gaussian beams.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Z. Hricha, E. M. El Halba, M. Lazrek, A. Belafhal
Summary: In this study, the focusing properties of a vortex Hermite-cosh-Gaussian beam passing through a converging lens system are investigated. The results show that the focal shift is strongly dependent on the Gaussian Fresnel number and the initial beam parameters, while being nearly insensitive to the beam order.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
E. M. El Halba, S. Hennani, A. Balhamri, A. Belafhal
Summary: Based on the vector Debye integral, this study investigates the focusing properties of linearly polarized Bessel-Gaussian beams modulated by Bessel gratings combined with a radial phase shift modulated spiral zone plate (RSSZP) passing through a large numerical aperture lens system. The data obtained shows that the intensity and phase distributions in the focal section are significantly controlled by the order of the beam, the topological charge, and the shifting parameter of the RSSZP. Simulations reveal that increasing the topological charge results in an increased ring radius, and the shifting parameter affects the ring size. Additionally, the linear polarized incident beam loses its polarization after crossing a high numerical aperture objective.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Optics
Yiheng Sun, Jiajie Wang, Qianjiang Yu, Haoxiang Wang, Paul Briard, Leonardo Andre Ambrosio, Gerard Gouesbet
Summary: This study provides analytical expressions for predicting the photophoretic force exerted on an optical absorptive particle in a gaseous medium. Numerical simulations are also performed to analyze the influences of various factors on the asymmetry vector.
Article
Optics
Leonardo Andre Ambrosio, Jiajie Wang, Gerard Gouesbet
Summary: Based on the adjoint boundary value problem proposed by Zulehner and Rohatschek [1] decades ago, analytic and closed-form expressions for the photophoretic forces exerted by arbitrary-shaped beams on homogeneous and low-loss spherical particles are derived in both the free molecular and slip flow regimes. The asymmetry vector for arbitrary refractive index particles is explicitly calculated by expanding the internal electromagnetic fields using the generalized Lorenz-Mie theory (GLMT). The proposed approach is the first systematic attempt to incorporate GLMT into the field of photophoresis and may be extended to spheroids and find important applications in optical trapping and manipulation of microparticles, geoengineering, particle levitation, optical trap displays, and other areas.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2022)
Article
Engineering, Electrical & Electronic
Faroq Saad, Abdelmajid Belafhal
Summary: A Generalized Hermite-cosh-Gaussian (GHchG) beam, which is a general form of Hermite-cosh-Gaussian beams families, is introduced. The propagation formula of this beam through an ABCD optical system is derived and illustrated with numerical examples. The results show that the characteristics of the beam, such as the decentered parameter, the hollowness parameter, the Hermite order, and the fractional order, are strongly affected by its propagation in free space and Fractional Fourier transform (FRFT).
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
H. Benzehoua, A. Belafhal
Summary: In this paper, a theoretical study of the Fresnel diffraction of Hollow-Gaussian laser beams (HGBs) by an opaque disk is presented. Analytical expressions describing the wave amplitude and intensity distribution of the HGBs diffracted by an opaque disk are derived. Important numerical calculations are performed to investigate and discuss the effects of factors such as the radius of the opaque disk and the input beam parameters on the intensity distribution. A specific case of Gaussian beam propagation is deduced from the main finding. The results of this work have potential applications in optical communications.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Physics, Multidisciplinary
Salma Chib, Mert Bayraktar, Abdelmajid Belafhal
Summary: The propagation formula and beam width expression of a partially coherent Generalized Flattened Hermite-Cosh-Gaussian (GFHChG) beam in maritime atmospheric turbulence is derived and investigated in this study. The numerical results show that the profile shape of the analyzed beam depends on the turbulence and beam parameters, and it exhibits good turbulence resistance with small wavelength and waist width values.
Article
Optics
Luiz Felipe Machado Votto, Gerard Gouesbet, Leonardo Andre Ambrosio
Summary: Due to recent developments in generalized Lorenz-Mie theories (GLMTs), there is a renewed interest in the finite series (FS) method. However, the lack of flexibility in its earlier statements has led to its neglect since the 1990s. By dissecting the later works and exploring possibilities for generalization, simplification, and organization, a more accessible formulation of the FS method has been proposed.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2023)
Article
Optics
H. Benzehoua, A. Belafhal
Summary: This paper derives the formula for the propagation of pulsed Laguerre higher-order cosh-Gaussian (LHChG) beam in turbulent atmosphere using the extended Huygens-Fresnel principle and the Fourier Transform method. The impact of atmospheric turbulence, transverse positions, and initial beam parameters on the spectral intensity of the propagated beam is examined using graphical representations. The relative spectral shift of pulsed LHChG beam in turbulent atmosphere with different radial coordinates is also studied and illustrated with numerical calculations. The research results have potential applications in information coding and transmission.
OPTICS COMMUNICATIONS
(2023)
Article
Mathematics, Applied
Abdelmajid Belafhal, E. M. El Halba, Talha Usman
Summary: The principal aim of this work is to investigate a new class of integral transforms involving the product of Bessel functions and Laguerre polynomials, which leads to new results related to digamma functions and Kampe de Feriet functions. A novel expression for the Kampe de Feriet function is found in terms of hypergeometric functions. Finally, the obtained results are applied in the problem of propagation of Laguerre-Bessel-Gaussian Schell-model beams.
CONTEMPORARY MATHEMATICS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Leonardo A. Ambrosio, Jhonas O. de Sarro, Vinicius S. de Angelis, Ahmed H. Dorrah, Priyanuj Bordoloi, Michel Zamboni-Rached, Federico Capasso
Summary: We discuss the theoretical aspects of longitudinally-structured light-sheets formed by the superposition of Bessel beams, and outline their potential applications in holography, volumetric displays, augmented and virtual reality, and optical trapping and manipulation of microparticles. Current experimental setups are also presented.
2023 INTERNATIONAL CONFERENCE ON OPTICAL MEMS AND NANOPHOTONICS, OMN AND SBFOTON INTERNATIONAL OPTICS AND PHOTONICS CONFERENCE, SBFOTON IOPC
(2023)
Article
Optics
Jianbao Zhao, Brant E. Billinghurst, Paul L. Raston
Summary: The far-infrared spectrum of room temperature formic acid labeled with 13C has been recorded and analyzed, leading to the determination of accurate line positions and predictions relevant to Earth's atmosphere and interstellar sources.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Semen Vasilchenko, Alexander Solodov, Oleg Egorov, Vladimir Tyuterev
Summary: Ozone plays a crucial role in atmospheric chemistry and radiative processes, and it may serve as a potential biosignature species in exoplanetary observations. This study utilized a continuous-wave cavity-ring-down spectrometer to accurately measure the absorption cross-sections of ozone in the near-infrared range. The results provide more precise data and have potential applications in atmospheric research.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Baorui Huang, Bo Peng, Qifeng Ren, Sheng Liao
Summary: This study utilizes the polarization bidirectional reflectance distribution function (p-BRDF) model derived from the microfacet theory to analyze the spectral p-BRDF of a brass surface. The results show that factors such as polarization state, wavelength, surface roughness, and permittivity have a significant impact on the distribution of BRDF on the object surface.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Qingwei Duan, Jiajie Wang, Qiwei Li, Xiang'e Han, Kuan Fang Ren
Summary: This paper introduces the applications of the generalized Lorenz-Mie theory (GLMT) and the vectorial complex ray model (VCRM) in the interaction between beams and particles. By comparing the experimental results, it is found that VCRM performs well in Gaussian beam scattering problems, providing a new method for studying the scattering of shaped beams by large particles/objects of any shape.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Yuefan Du, Xiaoping Li, Lei Shi, Fangyan Li, Shurong Yuan
Summary: This study proposes a physics-constrained model that utilizes the distribution characteristics of gas spectral parameters to predict spectral parameters for unknown wavelengths. Experimental results show that the model improves prediction accuracy and increases the data volume of gas spectral parameters by 4-5 times.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Laurentius Windholz, Imran Siddiqui, Shamim Khan, Syed Tanweer Iqbal
Summary: In this study, we report the discovery of two energy levels of the Pr atom that exhibit strong J-mixing, as well as the observed hyperfine structure patterns. The composition of wave functions, in addition to J-values, plays a crucial role in determining the appearance of these patterns.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Matthias Germann, Adrian Hjalten, Jonathan Tennyson, Sergei N. Yurchenko, Iouli E. Gordon, Christian Pett, Isak Silander, Karol Krzempek, Arkadiusz Hudzikowski, Aleksander Gluszek, Grzegorz Sobon, Aleksandra Foltynowicz
Summary: In this study, optical frequency comb Fourier transform spectroscopy was used to record the spectroscopic data of formaldehyde in a specific frequency range. The line positions and intensities of rovibrational transitions were obtained through line-by-line fitting. By incorporating these accurate line positions into the analysis, more energy levels and rovibrational transitions were predicted with reduced uncertainties in the H2CO spectrum.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Leonardo A. Ambrosio, Jhonas O. de Sarro, Gerard Gouesbet
Summary: This study derives a polychromatic version of the generalized Lorenz-Mie theory stricto sensu (GLMT) by expanding arbitrary time-dependent fields into partial waves using Bromwich scalar potentials. The new formalism introduces field shape spectra (FSSs) which are intrinsically frequency-dependent, modifying and redefining the physical quantities expressed in the monochromatic GLMT.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Patrick C. Chaumet
Summary: The paper proposes two new methods (IDR(s) and GPBiCGstab(L)) for computing the electromagnetic diffraction of objects larger than the wavelength. It is found that IDR(s) can reduce computation time but may not converge in some cases, while GPBiCGstab(L) always converges and also reduces computation time compared to QMR, GPBiCG, and BiCGstab.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Antigoni Kleanthous, Anthony J. Baran, Timo Betcke, David P. Hewett, Christopher D. Westbrook
Summary: To improve weather and climate models, it is important to accurately calculate the single-scattering properties of randomly oriented complex atmospheric ice crystals. This study applies Boundary Element Method (BEM) to calculate these properties in the microwave and sub-millimeter region of the electromagnetic spectrum for all-sky data assimilation. The results show that BEM can accurately compute the scattering properties of complex ice aggregates, which is crucial for weather and climate models.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Ben Niu, Yanting Li, Gang Xiong, Jihui Chen, Zhimin Hu, Yunqing Fu, Yaming Zou, Chongyang Chen, Ke Yao
Summary: This study presents both experimental and theoretical analysis of the 4d 2D5/2 -> 2D3/2 magnetic dipole transition in Rb-like ions. The correlation between the theoretical and experimental findings is observed, and it is illustrated that the contribution of the core-valence correlation is pivotal for the fine structure splittings.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
James A. Lock, Gunther P. Konnen, Philip Laven
Summary: Researchers have derived an analytical generalization of Airy theory that provides a more accurate approximation for the primary rainbow, but still has limitations for the second-order rainbow and beyond.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Shixiong Wu, Xuebang Gao, Xuqiang Dou, Li Xie
Summary: In this paper, an indoor experimental study was conducted to investigate the optical attenuation caused by sand/dust storms at different relative humidity levels. It was found that the hygroscopic growth of sand/dust particles has a significant effect on optical attenuation when the relative humidity is above 60%. Based on the double-parameter Kasten model, a proposed optical attenuation model takes into account visibility, particle size, relative humidity, and optical wavelength. Numerical calculations considering the hygroscopicity effect were also performed, and the results were in agreement with the experimental data.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
Article
Optics
Zhimin Yang, Jaeman Song, Bong Jae Lee
Summary: In this study, we analyze TPX cells operating in the self-sustaining circuit and examine the effects of different bandgaps on their performance. The results show that the bandgap energy of the LED must exceed that of the PV cell for the TPX cell to function in a self-sustaining parallel circuit. Additionally, a narrower bandgap energy for the PV cell and a wider bandgap energy for the LED can improve the performance of the TPX cell in the self-sustaining circuit.
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
(2024)
