Photonics最新文献_第5页

Illumination Field Uniformity Correction by Novel Finger Arrays for Lithography Illumination System 利用用于光刻照明系统的新型指阵校正照明场均匀性

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-15 DOI: 10.3390/photonics11070661

Shaoqin Luo, Junbo Liu, Chuan Jin, Ji Zhou

引用次数: 0

Polarization Influence on Er3+-Doped Multi-Wavelength Brillouin Fiber Laser Based on Fiber Loop Mirror 偏振对基于光纤环镜的掺 Er3+ 多波长布里渊光纤激光器的影响

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-13 DOI: 10.3390/photonics11070659

Yunqi Hao, Miao Miao, Weitong Liao, Kun Yang

{"title":"Polarization Influence on Er3+-Doped Multi-Wavelength Brillouin Fiber Laser Based on Fiber Loop Mirror","authors":"Yunqi Hao, Miao Miao, Weitong Liao, Kun Yang","doi":"10.3390/photonics11070659","DOIUrl":"https://doi.org/10.3390/photonics11070659","url":null,"abstract":"Polarization influences on the performance of multi-wavelength Brillouin Er3+-doped fiber laser are investigated by adjusting the polarization controller (PC) in the fiber loop mirror (FLM), where the linear laser cavity is composed of a fiber-tailed mirror and an FLM, and the stimulated Brillouin scattering (SBS) and the Er3+-doped fiber amplification (EDFA) simultaneously serve as the cavity gain. We realized 1–7 Brillouin laser lines by increasing the 980 nm pump power. For the first-order Brillouin laser, the signal–noise ratio (SNR) and optical intensity present a sinusoidal envelope; the conversion efficiency changes significantly from 0.56465 dBm/mw to 0.44975 dBm/mw by adjusting the ring’s angle in the PC; the first-order SBS thresholds are 20.4 mw, 36.1 mw and 28.5 mw at different angles θ2 = 36°, 276° and 300°, respectively; flatness between the two Brillouin lasers change obviously from 2.863 dB to 41.801 dB with different ring angles; the second-order Brillouin laser is suppressed and disappears finally at Δθ2 = −64° to −84° and 106°~136° angle variation. For the fifth-order Brillouin laser, the highest-order Brillouin laser line is seriously suppressed until it disappears at some angle variations similarly. The powers and wavelength stabilities for one-, three- and seven-wavelength Brillouin fiber lasers were measured in 1 h, and the obtained Er3+-doped multi-wavelength Brillouin fiber laser (MWBFL) worked stably during that time, but the stabilities become worse with higher SBS orders.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141651419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Correction: Jiang et al. Role of Pyramidal Low-Dimensional Semiconductors in Advancing the Field of Optoelectronics. Photonics 2024, 11, 370 更正：Jiang 等人. 金字塔低维半导体在推进光电子领域发展中的作用.光子学 2024，11，370

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-12 DOI: 10.3390/photonics11070658

Ao Jiang, Shibo Xing, Haowei Lin, Qing Chen, Mingxuan Li

引用次数: 0

Optical Rogue Waves in Fiber Lasers 光纤激光器中的光学杂波

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-12 DOI: 10.3390/photonics11070657

Hani J. Kbashi, Sergey V. Sergyev

引用次数: 0

Three-Dimensional Exploding Light Wave Packets 三维爆炸光波数据包

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-11 DOI: 10.3390/photonics11070652

Marcos G. Barriopedro, Manuel Holguín, Pablo de Lara-Montoya, Nilo Mata-Cervera, Miguel A. Porras

引用次数: 0

Design and Fabrication of Metasurfaces-Based Polarizing Beam Splitter with Tailored Deflection Angles for 940-nm Wavelength 为 940 纳米波长设计和制造具有定制偏转角的基于金属表面的偏振光分束器

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-11 DOI: 10.3390/photonics11070655

Kuan-Cheng Peng, Ju-Lin Pan, Jin-Li Weng, Yun-Han Lee, Jui-An Chiang, Guo-Dung Su

引用次数: 0

Revolutionizing Firefighting: UAV-Based Optical Communication Systems for Wildfires 消防革命：基于无人机的野火光通信系统

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-11 DOI: 10.3390/photonics11070656

Mohammad Furqan Ali, DushanthaNalin K. Jayakody, P. Muthuchidambaranathan

{"title":"Revolutionizing Firefighting: UAV-Based Optical Communication Systems for Wildfires","authors":"Mohammad Furqan Ali, DushanthaNalin K. Jayakody, P. Muthuchidambaranathan","doi":"10.3390/photonics11070656","DOIUrl":"https://doi.org/10.3390/photonics11070656","url":null,"abstract":"Wildfires are one of the most devastating natural disasters in the world. This study proposes an innovative optical wildfire communication system (OWC) that leverages advanced optical technologies for wildfire monitoring and seamless communication towards the 5G and beyond (5GB) wireless networks. The multi-input–multi-output (MIMO) optical link among communication nodes is designed by gamma–gamma (GG) distribution under consideration of intensity modulation and direct-detection (IM/DD) following an on–off-keying (OOK) scheme. In this study, the performance metrics of the proposed MIMO link that enables unmanned aerial vehicles (UAVs) are analytically derived. The end-to-end (E2E) performance metrics and the novel closed-form expressions for the average BER (ABER) and outage probability (Pout) are investigated for the proposed system models. Furthermore, the simulation results are obtained based on the real experimental data. The obtained results in this study are improved spatial resolution and accuracy, enabling the detection by communication of even small-scale wildfires at their inception stages. In the further perspective of this research, the development of the proposed system holds the potential to revolutionize wildfire prevention and control efforts, making a substantial impact on safeguarding ecosystems, communities, and economies from the devastating effects of fires.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141657470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Emerging Techniques for Nonlinear Optical Spectroscopy of Disordered and Highly Scattering Materials 用于无序和高散射材料非线性光学光谱学的新兴技术

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-11 DOI: 10.3390/photonics11070650

Albert S. Reyna, A. M. Amaral, C. B. de Araújo

{"title":"Emerging Techniques for Nonlinear Optical Spectroscopy of Disordered and Highly Scattering Materials","authors":"Albert S. Reyna, A. M. Amaral, C. B. de Araújo","doi":"10.3390/photonics11070650","DOIUrl":"https://doi.org/10.3390/photonics11070650","url":null,"abstract":"Scattering materials have been of considerable research interest due to their unique optical properties that may enable applications throughout the area of disordered photonics, particularly in fields such as Random Lasers, nonlinear (NL) microscopy in biomedical research, and optical thermometry. However, the complex structures of these materials make traditional NL spectroscopic techniques unsuitable for studies, as the materials of interest can cause large multiple scattering of light in addition to presenting spatial heterogeneities. Fortunately, new techniques, such as the Scattered Light Imaging Method (SLIM), the Intensity Correlation scan (IC-scan), and the Reflection Intensity Correlation scan (RICO-scan), have recently emerged, providing researchers with more appropriate ways to study disordered and scattering NL materials. These techniques allow for a deeper characterization of the NL optical properties of highly scattering materials, which are essential for applications in photonics, optoelectronics, and biophotonics, for example. In this paper, we discuss these innovative techniques, which can offer insights into the properties of materials of great potential for disordered photonics.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141657036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Influence of Fabrication and Assembly Errors on the Root Mean Square Surface Distortion of a 2 m Lightweight Mirror and Its Correction 制造和装配误差对 2 米轻型反射镜均方根表面畸变的影响及其修正

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-11 DOI: 10.3390/photonics11070653

Ping Jiang, Xiaoyu Wang, Kejun Wang, Xiaobo Li, Xun Yang

{"title":"Influence of Fabrication and Assembly Errors on the Root Mean Square Surface Distortion of a 2 m Lightweight Mirror and Its Correction","authors":"Ping Jiang, Xiaoyu Wang, Kejun Wang, Xiaobo Li, Xun Yang","doi":"10.3390/photonics11070653","DOIUrl":"https://doi.org/10.3390/photonics11070653","url":null,"abstract":"The influence of fabrication and assembly errors on the surface distortion due to gravity of a 2 m primary mirror and its correction method are presented. The effect of fabrication errors on the surface distortion is verified by Monte Carlo analysis. The results show that, within the 46.3% confidence interval, the surface accuracy root mean square (RMS) caused by fabrication errors is more than 5.0 nm (indicator requirement). The sensitivity of mirror surface accuracy to the matching relationship between the flexible support axial assembly position and the inherent properties (neutral surface and center of gravity) of the mirror were analyzed. Then, the correction principle of the RMS was proposed based on the analysis result. The surface accuracy RMS of surface gravity distortion is sensitive to fabrication and assembly errors, which can be effectively corrected using a flexible support mounting technique. This new flexible support mounting technique replaces the conventional method with flexible supports having shims so that adjustments can be made during testing to counteract the gravitational distortion of the mirror surface. Astigmatic aberration due to gravitational changes is effectively reduced by selecting a suitable thickness of shim, and the relationship between the astigmatism and the thickness of shim was investigated using the finite element analysis method. Finally, the finite element analysis results showed that the optimal surface gravity accuracy of the mirror assembly could be obtained by adjusting the shim, while the other performance of the assembly was not affected.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141657153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Tailoring Quantum Dot Shell Thickness and Polyethylenimine Interlayers for Optimization of Inverted Quantum Dot Light-Emitting Diodes 定制量子点外壳厚度和聚乙烯亚胺夹层以优化反相量子点发光二极管

IF 2.1 4区物理与天体物理

Photonics Pub Date : 2024-07-11 DOI: 10.3390/photonics11070651

A. F. Yazici, S. Ocal, Ayşenur Biçer, R. B. Serin, Rifat Kaçar, Esin Uçar, Alper Ulku, Talha Erdem, E. Mutlugun

{"title":"Tailoring Quantum Dot Shell Thickness and Polyethylenimine Interlayers for Optimization of Inverted Quantum Dot Light-Emitting Diodes","authors":"A. F. Yazici, S. Ocal, Ayşenur Biçer, R. B. Serin, Rifat Kaçar, Esin Uçar, Alper Ulku, Talha Erdem, E. Mutlugun","doi":"10.3390/photonics11070651","DOIUrl":"https://doi.org/10.3390/photonics11070651","url":null,"abstract":"Quantum dot light-emitting diodes (QLEDs) hold great promise for next-generation display applications owing to their exceptional optical properties and versatile tunability. In this study, we investigate the effects of quantum dot (QD) shell thickness, polyethylenimine (PEI) concentration, and PEI layer position on the performance of inverted QLED devices. Two types of alloyed-core/shell QDs with varying shell thicknesses were synthesized using a one-pot method with mean particle sizes of 8.0 ± 0.9 nm and 10.3 ± 1.3 nm for thin- and thick-shelled QDs, respectively. Thick-shelled QDs exhibited a higher photoluminescence quantum yield (PLQY) and a narrower emission linewidth compared to their thin-shelled counterparts. Next, QLEDs employing these QDs were fabricated. The incorporation of PEI layers on either side of the QD emissive layer significantly enhanced device performance. Using PEI on the hole transport side resulted in greater improvement than on the electron injection side. Sandwiching the QD layer between two PEI layers led to the best performance, with a maximum external quantum efficiency (EQE) of 17% and a peak luminance of 91,174 cd/m2 achieved using an optimized PEI concentration of 0.025 wt% on both electron injection and hole injection sides. This study highlights the critical role of QD shell engineering and interfacial modification in achieving high-performance QLEDs for display applications.","PeriodicalId":20154,"journal":{"name":"Photonics","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141655495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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