Pub Date : 2024-08-09DOI: 10.1088/2040-8986/ad6d7d
V. Kotlyar, E. Abramochkin, A. A. Kovalev
We obtain and investigate Bessel-Bessel-Gaussian vortex beams (BBG beams) with the complex amplitude being equal to a product of the Gaussian function with two Bessel functions, whose arguments are expressed as complicated radicals including the cylindrical coordinates and a free parameter that defines the shape of the intensity distribution. If this parameter is small, the intensity has the shape of an inhomogeneous ring. For larger values of this parameter, the intensity has the shape of two arcs or 'crescents', oriented by their concave sides to each other. The complex amplitude of such beams is derived in explicit form for an arbitrary distance from the waist. We demonstrate that the BBG beams rotate upon propagation anomalously fast: at a distance much shorter than the Rayleigh length, the intensity distribution is already rotated by almost 45º, whereas typically, the rotation angle of vortex Gaussian beams is equal to the Gouy phase. It is also shown that the parameter of the BBG beam allows controlling its topological charge: when the parameter value is positive and increases, the beam topological charge also increases stepwise by an even number. Besides, we study two other similar vortex BBG beams: either with four local intensity maxima, lying on the Cartesian coordinates axes, or with one intensity maximum with a crescent shape, whose center is on the horizontal axis. The derived three new families of asymmetric vortex laser beams, whose complex amplitude is described by explicit analytical expressions at an arbitrary distance from the waist, extend the variety of laser beams that can be used for manipulating and rotating microparticles, free space data transmission, and in quantum informatics.
{"title":"Bessel-Bessel-Gaussian vortex laser beams","authors":"V. Kotlyar, E. Abramochkin, A. A. Kovalev","doi":"10.1088/2040-8986/ad6d7d","DOIUrl":"https://doi.org/10.1088/2040-8986/ad6d7d","url":null,"abstract":"\u0000 We obtain and investigate Bessel-Bessel-Gaussian vortex beams (BBG beams) with the complex amplitude being equal to a product of the Gaussian function with two Bessel functions, whose arguments are expressed as complicated radicals including the cylindrical coordinates and a free parameter that defines the shape of the intensity distribution. If this parameter is small, the intensity has the shape of an inhomogeneous ring. For larger values of this parameter, the intensity has the shape of two arcs or 'crescents', oriented by their concave sides to each other. The complex amplitude of such beams is derived in explicit form for an arbitrary distance from the waist. We demonstrate that the BBG beams rotate upon propagation anomalously fast: at a distance much shorter than the Rayleigh length, the intensity distribution is already rotated by almost 45º, whereas typically, the rotation angle of vortex Gaussian beams is equal to the Gouy phase. It is also shown that the parameter of the BBG beam allows controlling its topological charge: when the parameter value is positive and increases, the beam topological charge also increases stepwise by an even number. Besides, we study two other similar vortex BBG beams: either with four local intensity maxima, lying on the Cartesian coordinates axes, or with one intensity maximum with a crescent shape, whose center is on the horizontal axis. The derived three new families of asymmetric vortex laser beams, whose complex amplitude is described by explicit analytical expressions at an arbitrary distance from the waist, extend the variety of laser beams that can be used for manipulating and rotating microparticles, free space data transmission, and in quantum informatics.","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":"28 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141924901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-09DOI: 10.1007/s12596-024-02115-2
Vikas Kumar, Ajay Kumar
{"title":"Stimulated Brillouin scattering in optimized photonic crystal fiber to achieve high Brillouin gain coefficient","authors":"Vikas Kumar, Ajay Kumar","doi":"10.1007/s12596-024-02115-2","DOIUrl":"https://doi.org/10.1007/s12596-024-02115-2","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":"53 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141923896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-09DOI: 10.1007/s12596-024-02023-5
A. K. Maniyar, Y. F. Nadaf, Syed Khasim, T. A. Hamdallah, M. V. Murugendrappa
{"title":"Photophysical studies on donor-p-acceptor substituted 1,3,4-oxadiazole derivatives for optoelectronic application: experimental and theoretical analysis","authors":"A. K. Maniyar, Y. F. Nadaf, Syed Khasim, T. A. Hamdallah, M. V. Murugendrappa","doi":"10.1007/s12596-024-02023-5","DOIUrl":"https://doi.org/10.1007/s12596-024-02023-5","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":"92 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141921779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-08DOI: 10.1007/s12596-024-02104-5
Megalan Leo Leon, Priscilla Mohanadoss, Arun Kumar Selvam, Kavitha Balamurugan, Rathanasabhapathy Gunasekaran, Nune Divya, Chandran Ramesh Kumar, A. I. Ferdous, A. Rashed
{"title":"High modulation depth and high modulated power with low noise figure for high speed modulation optical communication system performance signature","authors":"Megalan Leo Leon, Priscilla Mohanadoss, Arun Kumar Selvam, Kavitha Balamurugan, Rathanasabhapathy Gunasekaran, Nune Divya, Chandran Ramesh Kumar, A. I. Ferdous, A. Rashed","doi":"10.1007/s12596-024-02104-5","DOIUrl":"https://doi.org/10.1007/s12596-024-02104-5","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":"40 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141929296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-08DOI: 10.1007/s12596-024-02100-9
Régis Donald Hontinfinde, M. Ayela, Gaston Edah
{"title":"A numerical method for the Hirota equation in a dispersive optical media","authors":"Régis Donald Hontinfinde, M. Ayela, Gaston Edah","doi":"10.1007/s12596-024-02100-9","DOIUrl":"https://doi.org/10.1007/s12596-024-02100-9","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141929226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-08DOI: 10.1088/2040-8986/ad6ce4
M. A. Butt
In this study, a comprehensive numerical investigation focusing on a ridge waveguide composed of various material platforms is undertaken, including silicon-on-insulator (SOI), silicon nitride (SiN), and SU-8 polymer. In the realm of photonic sensing devices, the evanescent field assumes paramount significance in facilitating light-matter interactions. The primary objective of this study is to furnish a comparative analysis discerning the suitability of these material platforms for sensing applications. The findings reveal distinct characteristics among the different material platforms. SOI emerges as a standout contender, exhibiting an augmented evanescent field ratio (EFR) that substantially enhances light-matter interaction. Following closely, SiN-based waveguides demonstrate commendable performance in this regard. Conversely, SU-8 polymer waveguides, characterized by larger dimensions, present limitations in evanescent field confinement, resulting in the lowest sensitivity among the materials investigated. Hence, the selection of the appropriate material platform and waveguide type emerges as a critical consideration in the design phase of photonic sensors. This decision significantly influences the sensor's performance and efficacy in real-world applications.
{"title":"Analyzing the evanescent field ratio of ridge waveguide based on different material platforms for sensing applications","authors":"M. A. Butt","doi":"10.1088/2040-8986/ad6ce4","DOIUrl":"https://doi.org/10.1088/2040-8986/ad6ce4","url":null,"abstract":"\u0000 In this study, a comprehensive numerical investigation focusing on a ridge waveguide composed of various material platforms is undertaken, including silicon-on-insulator (SOI), silicon nitride (SiN), and SU-8 polymer. In the realm of photonic sensing devices, the evanescent field assumes paramount significance in facilitating light-matter interactions. The primary objective of this study is to furnish a comparative analysis discerning the suitability of these material platforms for sensing applications. The findings reveal distinct characteristics among the different material platforms. SOI emerges as a standout contender, exhibiting an augmented evanescent field ratio (EFR) that substantially enhances light-matter interaction. Following closely, SiN-based waveguides demonstrate commendable performance in this regard. Conversely, SU-8 polymer waveguides, characterized by larger dimensions, present limitations in evanescent field confinement, resulting in the lowest sensitivity among the materials investigated. Hence, the selection of the appropriate material platform and waveguide type emerges as a critical consideration in the design phase of photonic sensors. This decision significantly influences the sensor's performance and efficacy in real-world applications.","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":"6 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141925963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-08DOI: 10.1007/s12596-024-02021-7
Samirkumar R. Bhelave, A. N. Yerpude, S. J. Dhoble
{"title":"Photoluminescence studies and optimistic applications of KAlSiO4 phosphor synthesized by combustion method","authors":"Samirkumar R. Bhelave, A. N. Yerpude, S. J. Dhoble","doi":"10.1007/s12596-024-02021-7","DOIUrl":"https://doi.org/10.1007/s12596-024-02021-7","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":"82 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141926602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-16DOI: 10.1007/s12596-024-02032-4
P. K. Polasi, S. Vellela, Jammula Lakshmi Narayana, Judy Simon, N. Kapileswar, R. T. Prabu, A. Rashed
{"title":"Data rates transmission, operation performance speed and figure of merit signature for various quadurature light sources under spectral and thermal effects","authors":"P. K. Polasi, S. Vellela, Jammula Lakshmi Narayana, Judy Simon, N. Kapileswar, R. T. Prabu, A. Rashed","doi":"10.1007/s12596-024-02032-4","DOIUrl":"https://doi.org/10.1007/s12596-024-02032-4","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":"11 39","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141640533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-16DOI: 10.1007/s12596-024-02010-w
K. Maji, Kousik Mukherjee, M. Mandal
{"title":"All optical 4-bit Galois field adder using 2-D photonic crystals","authors":"K. Maji, Kousik Mukherjee, M. Mandal","doi":"10.1007/s12596-024-02010-w","DOIUrl":"https://doi.org/10.1007/s12596-024-02010-w","url":null,"abstract":"","PeriodicalId":509797,"journal":{"name":"Journal of Optics","volume":"74 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141643218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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