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Reflections on the Spatial Exponential Growth of Electromagnetic Quasinormal Modes
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-25 DOI: 10.1002/lpor.202402133
Tong Wu, José Luis Jaramillo, Philippe Lalanne
{"title":"Reflections on the Spatial Exponential Growth of Electromagnetic Quasinormal Modes","authors":"Tong Wu, José Luis Jaramillo, Philippe Lalanne","doi":"10.1002/lpor.202402133","DOIUrl":"https://doi.org/10.1002/lpor.202402133","url":null,"abstract":"A major research objective across various fields is to represent the response of open systems using quasinormal mode (QNM) expansions, akin to the treatment of normal modes in closed systems. In electromagnetism, QNM expansions effectively describe modal physics inside resonators and in their near field. However, challenges arise in the intermediate and far field, where QNM fields grow exponentially, posing mathematical issues and often being considered unphysical. How can a near-field relevant concept lose its validity? Where does this transition occur? This perspective seeks to answer these questions by analyzing foundational concepts such as cavity perturbation theory and dissipative coupling using model problems. The analysis reveals no fundamental inconsistencies with exponential growth and sometimes yields surprising results, such as an increase in coupling coefficients between QNMs of two distant bodies as separation increases. These findings should be widely shared to prevent misunderstandings and enhance the understanding of contemporary electromagnetic QNM theories. The final section, intended for experts in electromagnetic QNMs, provides a thorough analysis of these theories.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"20 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143703598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Sub-Skin-Depth Nanoslit Integrated Topological Insulator Devices for Self-Driven Broadband Terahertz Detection and Imaging
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-25 DOI: 10.1002/lpor.202402091
Shiqi Lan, Li Han, Chenyu Yao, Shijian Tian, Libo Zhang, Mengjie Jiang, Xiaokai Pan, Yingdong Wei, Yichong Zhang, Kaixuan Zhang, Huaizhong Xing, Xiaoshuang Chen, Lin Wang
{"title":"Sub-Skin-Depth Nanoslit Integrated Topological Insulator Devices for Self-Driven Broadband Terahertz Detection and Imaging","authors":"Shiqi Lan, Li Han, Chenyu Yao, Shijian Tian, Libo Zhang, Mengjie Jiang, Xiaokai Pan, Yingdong Wei, Yichong Zhang, Kaixuan Zhang, Huaizhong Xing, Xiaoshuang Chen, Lin Wang","doi":"10.1002/lpor.202402091","DOIUrl":"https://doi.org/10.1002/lpor.202402091","url":null,"abstract":"The advancement of terahertz technology is primarily fueled by the imperative for room-temperature operation with high sensitivity, high integration, and broadband detection capabilities. Nevertheless, the traditional semiconductor materials in terahertz detectors continue to grapple with obstacles, notably intricate integration and processing complexities. The unique electronic structures and non-trivial topological properties of two-dimensional topological materials bring new possibilities and perspectives for high-performance terahertz low-energy photon detection. Here, an antenna combined with the topological insulator GeBi<sub>4</sub>Te<sub>7</sub> and an ultrashort channel integration technique is utilized to significantly enhance the electromagnetic response in a confined region by compressing and localizing the optical field in the spatial dimension. This strategy achieves a preferential flow of hot carriers through enhanced light-matter interactions while satisfying the enhanced bandwidth and response speed of the detector. The sensitivity of the detector is 3.04 A·W<sup>−1</sup> at 0.81 THz with a noise equivalent power of less than 15.8 pW·Hz<sup>−0.5</sup> and a response time of less than 5 µs. These research results provide a brand-new opportunity to develop highly sensitive, highly integrated, and broadband terahertz detectors, enabling exploration across a diverse array of application domains.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"13 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143703597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Unique Multilayer Gradient Design of Al2O3 Doping Phosphor-In-Glass Film Enabling High-Luminance Laser Lighting
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-25 DOI: 10.1002/lpor.202401991
Zhencheng Li, Jiuzhou Zhao, Yongjie Ding, Hongjin Zhang, Zhenyu Chen, Zhenzi Wu, Yufan Wei, Feng Wu, Changqing Chen, Yang Peng, Jiangnan Dai
{"title":"Unique Multilayer Gradient Design of Al2O3 Doping Phosphor-In-Glass Film Enabling High-Luminance Laser Lighting","authors":"Zhencheng Li, Jiuzhou Zhao, Yongjie Ding, Hongjin Zhang, Zhenyu Chen, Zhenzi Wu, Yufan Wei, Feng Wu, Changqing Chen, Yang Peng, Jiangnan Dai","doi":"10.1002/lpor.202401991","DOIUrl":"https://doi.org/10.1002/lpor.202401991","url":null,"abstract":"Next-generation high-luminance laser lighting faces a crucial challenge in developing a transmissive color converter with efficient heat dissipation and phosphor conversion. Herein, a unique architecture of Al<sub>2</sub>O<sub>3</sub> particles gradient doping phosphor-in-glass film (PiGF) coated on a transparent sapphire (AGD-PiGF@S) is designed and prepared by a simple multilayer printing and low-temperature sintering strategy. By optimizing the multilayer gradient doping structure, the 9-0%AGD-PiGF@S converter enables a high-luminance white light with a high luminous flux (LF) of 2996 lm under a maximum laser power density saturation threshold (LPD-ST) of 19 W mm<sup>−2</sup>, which is 2.63 times of the traditional PiGF@S converter with a LF of 1139 lm@11 W mm<sup>−2</sup>. The working temperature of this AGD-PiGF@S converter is decreased by 35.8°C@11 W mm<sup>−2</sup> (≈23.82%). Compared with the Al<sub>2</sub>O<sub>3</sub> uniform doping PiGF@S (4.5%AUD-PiGF@S) converter, the maximum LF and luminous efficiency (LE) of AGD-PiGF@S are increased by 58.18% and 33.20%, respectively. The findings will provide a new idea for realizing the preferably color converter in high-luminance laser lighting and display.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"183 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 Photothermal and Photocurrent Enhancements in Bi2Te3 Topological Insulator Nanofilm by Integrating with a Photonic Crystal
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-25 DOI: 10.1002/lpor.202500033
Hua Lu, Shouhao Shi, Dikun Li, Shuwen Bo, Jiadeng Zheng, Dong Mao, Yinan Zhang, Xuetao Gan, Jianlin Zhao
{"title":"Efficient Photothermal and Photocurrent Enhancements in Bi2Te3 Topological Insulator Nanofilm by Integrating with a Photonic Crystal","authors":"Hua Lu, Shouhao Shi, Dikun Li, Shuwen Bo, Jiadeng Zheng, Dong Mao, Yinan Zhang, Xuetao Gan, Jianlin Zhao","doi":"10.1002/lpor.202500033","DOIUrl":"https://doi.org/10.1002/lpor.202500033","url":null,"abstract":"Bismuth telluride (Bi<sub>2</sub>Te<sub>3</sub>) topological insulator (TI) presents excellent photothermoelectric characteristics with promising applications in photonic detection, catalysis, and sensing. Exploring effective approaches to enhance the photothermal and photocurrent response in the Bi<sub>2</sub>Te<sub>3</sub> TI films is particularly significant for improving the photodetection capacity. Herein, the generation of an optical effect analogous to Tamm plasmons is experimentally and numerically demonstrated by integrating the Bi<sub>2</sub>Te<sub>3</sub> TI nanofilm onto a 1D photonic crystal (PC). The Bi<sub>2</sub>Te<sub>3</sub>/PC multilayer enables the distinct enhancement of near-infrared light absorption and photothermal effect of Bi<sub>2</sub>Te<sub>3</sub> nanofilm based on the TI-based optical Tamm state. The measured results reveal that the reflection spectrum of Bi<sub>2</sub>Te<sub>3</sub> nanofilm on the PC exhibits a distinct dip, whose position has a redshift with increasing the thickness of Bi<sub>2</sub>Te<sub>3</sub> film. The numerical and theoretical calculations agree well with the experiments. The reflection dip stems from the formation of the TI-based Tamm state, whose wavelength exhibits a slight blueshift with the increase of temperature. The zero-bias photocurrent conversion of Bi<sub>2</sub>Te<sub>3</sub> nanofilm can be obviously self-reinforced with impinging light on the Bi<sub>2</sub>Te<sub>3</sub>/PC structure at the Tamm state wavelength. The results pave a new avenue for enhancing light-TI interactions and their applications in high-performance near-infrared photodetection devices.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"61 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Moderate Absorption and Low Scattering: Near-infrared Illumination for Clear Imaging through Highly Turbid Water
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-25 DOI: 10.1002/lpor.202402067
Yiwen Wang, Peiyang Liu, Tianxiang Wu, Zhe Feng, Ying Liu, Jun Qian
{"title":"Moderate Absorption and Low Scattering: Near-infrared Illumination for Clear Imaging through Highly Turbid Water","authors":"Yiwen Wang, Peiyang Liu, Tianxiang Wu, Zhe Feng, Ying Liu, Jun Qian","doi":"10.1002/lpor.202402067","DOIUrl":"https://doi.org/10.1002/lpor.202402067","url":null,"abstract":"Optical imaging through highly turbid water (<span data-altimg=\"/cms/asset/3dc6264d-c2b2-41a9-98e5-2fa909dd47a9/lpor202402067-math-0001.png\"></span><mjx-container ctxtmenu_counter=\"1\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"><mjx-math aria-hidden=\"true\" location=\"graphic/lpor202402067-math-0001.png\"><mjx-semantics><mjx-mo data-semantic- data-semantic-role=\"inequality\" data-semantic-speech=\"greater than\" data-semantic-type=\"relation\"><mjx-c></mjx-c></mjx-mo></mjx-semantics></mjx-math><mjx-assistive-mml display=\"inline\" unselectable=\"on\"><math altimg=\"urn:x-wiley:18638880:media:lpor202402067:lpor202402067-math-0001\" display=\"inline\" location=\"graphic/lpor202402067-math-0001.png\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><semantics><mo data-semantic-=\"\" data-semantic-role=\"inequality\" data-semantic-speech=\"greater than\" data-semantic-type=\"relation\">&gt;</mo>$&gt;$</annotation></semantics></math></mjx-assistive-mml></mjx-container>50 NTU) presents significant challenges due to strong photon scattering effect that impedes effective detection of light signal. Using Monte Carlo simulation, it is found that moderate light absorption can improve image quality, while photon scattering is unequivocally detrimental. To achieve clear imaging in highly turbid water, the wavelength of illumination light has been red-shifted from the traditionally utilized blue-green to near-infrared, which has moderate absorption and low scattering. Experimental results demonstrate that near-infrared illumination is helpful to the detection of target while visible illumination causes the loss of target information. This provides a simple optical imaging method for extracting signals from targets in highly turbid water, without the requirement of complex equipment. Furthermore, the negative effect of backscattering background under forward-illumination mode on imaging contrast is confirmed, and the back-illumination mode is proposed to eliminate its interference. Finally, the number and movement of fish are successfully observed in real time through the simulated aquaculture pond, using the near-infrared lateral-illumination, and the research has the potential to be applied in various turbid underwater imaging scenarios.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"57 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143695448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Advances of Fluorescence Molecular Imaging: NIR-II Window, Probes, and Tomography
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-25 DOI: 10.1002/lpor.202400275
Fan Song, Peng Zhang, Huijie Wu, Chenbin Ma, Zeyu Liu, Ruxin Cai, Youdan Feng, Yufang He, Xiaoman Dong, Ye Tian, Guanglei Zhang
{"title":"Advances of Fluorescence Molecular Imaging: NIR-II Window, Probes, and Tomography","authors":"Fan Song, Peng Zhang, Huijie Wu, Chenbin Ma, Zeyu Liu, Ruxin Cai, Youdan Feng, Yufang He, Xiaoman Dong, Ye Tian, Guanglei Zhang","doi":"10.1002/lpor.202400275","DOIUrl":"https://doi.org/10.1002/lpor.202400275","url":null,"abstract":"Fluorescence molecular imaging (FMI), a promising in vivo non-invasive optical molecular imaging technology, has high sensitivity, specificity, and spatio-temporal resolution. Owing to its further advantages of low cost and no radiation, FMI has been extensively employed in the diagnosis and treatment of tumors, imaging of the vascular system, and guided delivery of drugs. Nonetheless, affected by the strong photon absorption and scattering, FMI faces two major challenges: limited tissue penetration depth and complicated tomography reconstruction. This review clarifies both the challenges of FMI for the first time by summarizing the advances in near-infrared region II (NIR-II) imaging and fluorescence molecular tomography (FMT). In detail, NIR-II imaging conditions, representative probes, FMT systems, and reconstruction algorithms are reviewed. The NIR-II imaging can achieve deeper penetration and higher resolution, which facilitate more accurate reconstruction of FMT. And in turn, precise FMT reconstruction will promote the development and application of NIR-II imaging. Additionally, the challenges for the future development of NIR-II imaging and FMT are deeply analyzed, and the potential improvement avenues are discussed. The strengthening of the methodological investigation of NIR-II FMT is proposed to impel the deeper and more accurate FMI, ultimately providing more effective optical imaging tools for the biomedical field.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"33 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143703599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Near-Infrared Quantum Dots for Electroluminescence: Balancing Performance and Sustainability
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-25 DOI: 10.1002/lpor.202401947
Wan-Shan Shen, Ya-Kun Wang, Liang-Sheng Liao
{"title":"Near-Infrared Quantum Dots for Electroluminescence: Balancing Performance and Sustainability","authors":"Wan-Shan Shen, Ya-Kun Wang, Liang-Sheng Liao","doi":"10.1002/lpor.202401947","DOIUrl":"https://doi.org/10.1002/lpor.202401947","url":null,"abstract":"Near-infrared quantum dots (NIR QDs) show promise in the fields of biomedicine, public health, and optoelectronics. Significant progress has been made in the development of efficient NIR light-emitting diodes (LEDs) through understanding the correlation between QD size and photophysical properties, along with research into QD passivation and device structure optimization. However, challenges remain in achieving long operational lifetime and low environmental hazard, which must be addressed to meet restriction of hazardous substances (RoHS) standards. In this review, the research progress on the synthesis and passivation of NIR QDs, as well as the efficiency and stability of NIR-quantum dot light-emitting diodes (QLEDs) are summarized. This is started with the synthesis and passivation strategies for common toxic and RoHS-compliant nonhazardous NIR QDs, highlighting passivation approaches that enhance photoluminescence quantum yield. Then, the fabrication and performance aspects of NIR QLEDs are investigated and the efficiency and stability of devices using toxic and nontoxic NIR QDs are summarized. Finally, the latest advances are summarized by highlighting the necessary balance between conventional high-performance QDs and more environmentally friendly RoHS-compliant QDs, and the move of focus is discussed to the long-term challenge of combining device performance with environmental sustainability and what needs to do toward this goal.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"57 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143703600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
2D AgVP2Se6 with Layer-Independent and Strong In-Plane Anisotropic Second Harmonic Generation
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-25 DOI: 10.1002/lpor.202500149
Xu Chen, Zhiyong Bai, Tao Ouyang, Weiqi Huang, Shanshan Chen, Han Wang, Yanqiang Li, Xiaoying Shang, Xueyuan Chen, Junhua Luo, Sangen Zhao
{"title":"2D AgVP2Se6 with Layer-Independent and Strong In-Plane Anisotropic Second Harmonic Generation","authors":"Xu Chen, Zhiyong Bai, Tao Ouyang, Weiqi Huang, Shanshan Chen, Han Wang, Yanqiang Li, Xiaoying Shang, Xueyuan Chen, Junhua Luo, Sangen Zhao","doi":"10.1002/lpor.202500149","DOIUrl":"https://doi.org/10.1002/lpor.202500149","url":null,"abstract":"Exploring 2D nonlinear optical (NLO) materials that exhibit layer-independence and in-plane anisotropy of second-harmonic generation (SHG) is of great importance to the fundamental studies and further development of polarization-sensitive optoelectronics. However, such exploration remains challenging because it requires the corresponding bulk materials to have broken inversion symmetry as well as low-lattice symmetry. Here, it is shown that AgVP<sub>2</sub>Se<sub>6</sub> can be a novel 2D NLO anisotropic material with the experimental demonstration of the layer-irrelevant and in-plane anisotropic NLO process. Nanoflakes of AgVP<sub>2</sub>Se<sub>6</sub> are successfully prepared by mechanical exfoliation method. The thickness- and polarization-dependent SHG measurement reveal that as-exfoliated AgVP<sub>2</sub>Se<sub>6</sub> nanoflakes exhibit layer-independence and strong in-plane anisotropy of SHG with the anisotropic factor up to 56.38. Moreover, temperature-dependent Raman spectroscopy reveals that 2D AgVP<sub>2</sub>Se<sub>6</sub> nanoflakes exhibit interlayer interactions stronger than that of graphene, which is helpful in reducing interlayer slip and detachment. These attributes make 2D AgVP<sub>2</sub>Se<sub>6</sub> promising in polarization-sensitive nanophotonic applications.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"29 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143703603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Measurement of Highly Nonlocal Nonlinear Responses via Circular Airy Beams
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-24 DOI: 10.1002/lpor.202401934
Pengbo Jia, Zhaochen Li, Xiaolan Hu, Domenico Bongiovanni, Xingdong Zhao, Shiqiang Xia, Keyu Su, Yingying Zhang, Zunlue Zhu, Yi Hu
{"title":"Measurement of Highly Nonlocal Nonlinear Responses via Circular Airy Beams","authors":"Pengbo Jia, Zhaochen Li, Xiaolan Hu, Domenico Bongiovanni, Xingdong Zhao, Shiqiang Xia, Keyu Su, Yingying Zhang, Zunlue Zhu, Yi Hu","doi":"10.1002/lpor.202401934","DOIUrl":"https://doi.org/10.1002/lpor.202401934","url":null,"abstract":"Structured light is extensively employed in optical measurements due to its exotic behaviors in light-matter interactions. Notably, it exhibits exceptional capability in detecting the nonlinear response of optical media. Nevertheless, current detections enabled by structured light are limited to local nonlinearities. Here, an approach for measuring highly nonlocal nonlinear responses via a circular Airy beam is demonstrated. Under the action of a highly nonlocal nonlinearity, the profile of the beam is reshaped to a ring pattern whose size is linearly increased with the injected optical power. The slope of the linear relation reveals the nonlocal response, as proved by the theory. Experimentally, the method is verified by testing a typical medium having a highly nonlocal nonlinearity. The findings may trigger more studies on the measurement of optical nonlinearities via structured light.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"18 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143678342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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
Ultralow Photon Flux OWC Links Using UV-C Single-Photon Detection
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-24 DOI: 10.1002/lpor.202401804
Feng Liu, James Farmer, Grahame Faulkner, Jonathan J. D. McKendry, Enyuan Xie, Qianfang Zheng, Zhaoming Wang, Jianming Wang, Jordan Hill, Johannes Herrnsdorf, Martin D. Dawson, Dominic O'Brien
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