Pub Date : 2025-12-23DOI: 10.1109/JSTQE.2025.3647224
Yuriy I. Surkov;Isabella A. Serebryakova;Arseniy P. Fashchevskiy;Polina A. Timoshina;Elina A. Genina;Valery V. Tuchin
We present a principal component analysis-based Laser Speckle Contrast Tomography (PCA-LSCT) method that enables simultaneous, independent mapping of vessel depth and blood-flow velocity without any modification to the optical layout of conventional laser speckle contrast imaging (LSCI). Raw speckle frames are decomposed by a principal component analysis into a static component–the Static Speckle Contrast (SSC)–and a dynamic component–the Dynamic Activity Coefficient (DAC). The SSC is linearly correlated with the relative depth of vessels and is invariant to flow speed, whereas the DAC quantifies blood-flow velocity analogously to classical LSCI and is only weakly depth-dependent. Experiments with phantoms containing a model capillary and flow velocities ranging from 1 to 50 mm/s demonstrate high reproducibility of SSC profiles and a strong correlation between the resulting depth maps and ultrasound tomography (r2 = 0.90 for transmitted-light detection, r2 = 0.88 for backscattered-light detection). The suggested approach has been tested in vivo on a ring finger and has confirmed its high potential for providing non-invasive, contactless, depth-resolved 3D angiography.
{"title":"PCA-LSCT: Software-Implemented Laser Speckle Contrast Tomography for Depth-Resolved Blood-Flow Mapping","authors":"Yuriy I. Surkov;Isabella A. Serebryakova;Arseniy P. Fashchevskiy;Polina A. Timoshina;Elina A. Genina;Valery V. Tuchin","doi":"10.1109/JSTQE.2025.3647224","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3647224","url":null,"abstract":"We present a principal component analysis-based Laser Speckle Contrast Tomography (PCA-LSCT) method that enables simultaneous, independent mapping of vessel depth and blood-flow velocity without any modification to the optical layout of conventional laser speckle contrast imaging (LSCI). Raw speckle frames are decomposed by a principal component analysis into a static component–the <italic>Static Speckle Contrast</i> (SSC)–and a dynamic component–the <italic>Dynamic Activity Coefficient</i> (DAC). The SSC is linearly correlated with the relative depth of vessels and is invariant to flow speed, whereas the DAC quantifies blood-flow velocity analogously to classical LSCI and is only weakly depth-dependent. Experiments with phantoms containing a model capillary and flow velocities ranging from 1 to 50 mm/s demonstrate high reproducibility of SSC profiles and a strong correlation between the resulting depth maps and ultrasound tomography (r<sup>2</sup> = 0.90 for transmitted-light detection, r<sup>2</sup> = 0.88 for backscattered-light detection). The suggested approach has been tested <italic>in vivo</i> on a ring finger and has confirmed its high potential for providing non-invasive, contactless, depth-resolved 3D angiography.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"32 4: Adv. Biophoton. in Emerg. Biomed. Tech. and Dev","pages":"1-9"},"PeriodicalIF":5.1,"publicationDate":"2025-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-22DOI: 10.1109/JSTQE.2025.3647115
Mikhail I. Skvortsov;Kseniya V. Kolosova;Sofia R. Abdullina;Zhibzema E. Munkueva;Alexander V. Dostovalov;Evgeniy V. Podivilov;Sergey A. Babin
The effect of an additional random reflector providing self-injection locking of an erbium fiber DFB laser on linewidth narrowing is studied. In a hybrid cavity comprising a short artificial fs-inscribed random reflector in combination with a natural Rayleigh reflector in the form of 100-m SMF fiber connected to the DFB laser the effect is greatly enhanced. The instantaneous linewidth narrowing by 2 orders is demonstrated which is in approximate agreement with theoretical estimation. For the long-term linewidth, the narrowing of approximately 3 orders of magnitude is observed. Thus, a compact and stable single-frequency laser with quite narrow linewidth (<5 Hz long term) for a wide range of application has been developed.
研究了铒光纤DFB激光器中提供自注入锁定的附加随机反射器对线宽变窄的影响。在混合腔中，由短的人造fs随机反射器与自然瑞利反射器（以100 m SMF光纤的形式连接到DFB激光器）组成的混合腔中，效果大大增强。结果表明，瞬时线宽缩小了2个数量级，与理论估计基本一致。对于长期线宽，观察到大约3个数量级的缩小。因此，一种紧凑和稳定的单频激光器，具有相当窄的线宽（<5赫兹长期），广泛的应用已经开发出来。
{"title":"DFB Fiber Laser Line Narrowing Due to Self-Injection Locking in a Hybrid Cavity With Random Reflector","authors":"Mikhail I. Skvortsov;Kseniya V. Kolosova;Sofia R. Abdullina;Zhibzema E. Munkueva;Alexander V. Dostovalov;Evgeniy V. Podivilov;Sergey A. Babin","doi":"10.1109/JSTQE.2025.3647115","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3647115","url":null,"abstract":"The effect of an additional random reflector providing self-injection locking of an erbium fiber DFB laser on linewidth narrowing is studied. In a hybrid cavity comprising a short artificial fs-inscribed random reflector in combination with a natural Rayleigh reflector in the form of 100-m SMF fiber connected to the DFB laser the effect is greatly enhanced. The instantaneous linewidth narrowing by 2 orders is demonstrated which is in approximate agreement with theoretical estimation. For the long-term linewidth, the narrowing of approximately 3 orders of magnitude is observed. Thus, a compact and stable single-frequency laser with quite narrow linewidth (<5 Hz long term) for a wide range of application has been developed.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"32 5: Self-Injection Locked Lasers and Assoc. Sys.","pages":"1-8"},"PeriodicalIF":5.1,"publicationDate":"2025-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-15DOI: 10.1109/JSTQE.2025.3644635
{"title":"2025 Index IEEE Journal of Selected Topics in Quantum Electronics","authors":"","doi":"10.1109/JSTQE.2025.3644635","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3644635","url":null,"abstract":"","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 6: Photon. for Climate Chng. Mitigation and Adapt.","pages":"1-88"},"PeriodicalIF":5.1,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11300733","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145778217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-15DOI: 10.1109/JSTQE.2025.3644240
Mojdeh Mansouri;Abolfazl Aghili;Amir Mohammad Ghanei;Sara Darbari;Mohammad Kazem Moravvej-Farshi
In the rapidly evolving field of nanotechnology, the ability to manipulate microscopic particles with precision at far-field distances remains a challenging endeavor. This paper introduces a dynamically tunable optical vortex based on elliptical gold nano-antenna arrays, enabling real-time control over the focal point position of optical vortex. By allowing wavelength-dependent precise adjustments of focal point positions over a range of several micrometers, our method significantly enhances particle manipulation capabilities, compared with traditional static plasmonic tweezers. We demonstrate the generation of far-field optical vortices, achieving effective trapping of nanoparticles with a dynamically tunable trapping distance up to around 14.7 μm from the metasurface, well beyond the near-field limit in conventional plasmonic tweezers. This advancement addresses limitations associated with conventional plasmonic manipulation, such as detrimental thermal effects and confinement to the near-field region. Besides representing a significant progression in nanoparticle manipulation techniques, this innovative platform opens new avenues for applications in optical micro-robotics and advanced material structuring, propelling the field forward and inviting further exploration of tunable optical forces.
{"title":"Optical Vortices for Dynamically Tunable Far-Field Particle Manipulation","authors":"Mojdeh Mansouri;Abolfazl Aghili;Amir Mohammad Ghanei;Sara Darbari;Mohammad Kazem Moravvej-Farshi","doi":"10.1109/JSTQE.2025.3644240","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3644240","url":null,"abstract":"In the rapidly evolving field of nanotechnology, the ability to manipulate microscopic particles with precision at far-field distances remains a challenging endeavor. This paper introduces a dynamically tunable optical vortex based on elliptical gold nano-antenna arrays, enabling real-time control over the focal point position of optical vortex. By allowing wavelength-dependent precise adjustments of focal point positions over a range of several micrometers, our method significantly enhances particle manipulation capabilities, compared with traditional static plasmonic tweezers. We demonstrate the generation of far-field optical vortices, achieving effective trapping of nanoparticles with a dynamically tunable trapping distance up to around 14.7 μm from the metasurface, well beyond the near-field limit in conventional plasmonic tweezers. This advancement addresses limitations associated with conventional plasmonic manipulation, such as detrimental thermal effects and confinement to the near-field region. Besides representing a significant progression in nanoparticle manipulation techniques, this innovative platform opens new avenues for applications in optical micro-robotics and advanced material structuring, propelling the field forward and inviting further exploration of tunable optical forces.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"32 3: Nanophotonics, Metamaterials and Plasmonics","pages":"1-8"},"PeriodicalIF":5.1,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-10DOI: 10.1109/JSTQE.2025.3630954
{"title":"IEEE Journal of Selected Topics in Quantum Electronics Topic Codes and Topics","authors":"","doi":"10.1109/JSTQE.2025.3630954","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3630954","url":null,"abstract":"","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 6: Photon. for Climate Chng. Mitigation and Adapt.","pages":"C4-C4"},"PeriodicalIF":5.1,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11293813","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145729290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-10DOI: 10.1109/JSTQE.2025.3564806
{"title":"Call for Papers: Special issue on Advances in Semiconductor Surface-emitting Lasers: VCSELs and PCSELs","authors":"","doi":"10.1109/JSTQE.2025.3564806","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3564806","url":null,"abstract":"","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 6: Photon. for Climate Chng. Mitigation and Adapt.","pages":"1-2"},"PeriodicalIF":5.1,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11293806","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145729362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-10DOI: 10.1109/JSTQE.2025.3625363
{"title":"Call for Papers: Special issue on Inverse Design of Photonic Applications Using Quantum and Classical Computing","authors":"","doi":"10.1109/JSTQE.2025.3625363","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3625363","url":null,"abstract":"","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 6: Photon. for Climate Chng. Mitigation and Adapt.","pages":"1-2"},"PeriodicalIF":5.1,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11293804","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145729363","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-10DOI: 10.1109/JSTQE.2025.3630952
{"title":"IEEE Journal of Selected Topics in Quantum Electronics Information for Authors","authors":"","doi":"10.1109/JSTQE.2025.3630952","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3630952","url":null,"abstract":"","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 6: Photon. for Climate Chng. Mitigation and Adapt.","pages":"C3-C3"},"PeriodicalIF":5.1,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11293802","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145729345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-10DOI: 10.1109/JSTQE.2025.3564814
{"title":"Call for Papers: Special issue on Advances in High-Speed Intensity Modulation and Direct Detection Technologies","authors":"","doi":"10.1109/JSTQE.2025.3564814","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3564814","url":null,"abstract":"","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 6: Photon. for Climate Chng. Mitigation and Adapt.","pages":"1-2"},"PeriodicalIF":5.1,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11293812","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145729460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-10DOI: 10.1109/JSTQE.2025.3630948
{"title":"IEEE Journal of Selected Topics in Quantum Electronics Publication Information","authors":"","doi":"10.1109/JSTQE.2025.3630948","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3630948","url":null,"abstract":"","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 6: Photon. for Climate Chng. Mitigation and Adapt.","pages":"C2-C2"},"PeriodicalIF":5.1,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11293805","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145729307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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