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Journal of The Optical Society of America B-optical Physics最新文献

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Accurate inverse design for high-efficiency and broadband terahertz devices by co-simulation with genetic algorithms 基于遗传算法联合仿真的高效宽带太赫兹器件精确反设计
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-27 DOI: 10.1364/josab.496383
Ming Zhang, Junyao Zhang, Ming Cui, Peng Dong, Baozhu Wang, Lin Yang, Xiuqing Zhang
{"title":"Accurate inverse design for high-efficiency and broadband terahertz devices by co-simulation with genetic algorithms","authors":"Ming Zhang, Junyao Zhang, Ming Cui, Peng Dong, Baozhu Wang, Lin Yang, Xiuqing Zhang","doi":"10.1364/josab.496383","DOIUrl":"https://doi.org/10.1364/josab.496383","url":null,"abstract":"In this study, we combined MATLAB with the rigorous electromagnetic field simulation software Computer Simulation Technology to perform a co-simulation method for inverse design of high-efficiency and broadband THz metasurface devices. In the proposed design method, genetic algorithm (GA) is embedded to realize automatic and inverse design. Aiming toward the different requirements of high-efficiency and broadband THz metasurface devices, different objective functions are set to optimize the design of different types of THz metasurface devices. Based on the rigorous electromagnetic simulation and genetic algorithm, the proposed design method can realize automatic and inverse design with high reliability, compared to the theoretical model based on catenary e-field theory. This study provides an important guiding role and an efficient method for designing and optimizing required metasurface devices with practical applied value.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135477769","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
Free-induction-decay magnetometer with enhanced optical pumping 具有增强光泵浦的自由感应衰减磁强计
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-27 DOI: 10.1364/josab.501086
Dominic Hunter, Marcin Mrozowski, Allan McWilliam, Stuart Ingleby, Terry Dyer, Paul Griffin, Erling Riis
{"title":"Free-induction-decay magnetometer with enhanced optical pumping","authors":"Dominic Hunter, Marcin Mrozowski, Allan McWilliam, Stuart Ingleby, Terry Dyer, Paul Griffin, Erling Riis","doi":"10.1364/josab.501086","DOIUrl":"https://doi.org/10.1364/josab.501086","url":null,"abstract":"Spin preparation prior to a free-induction-decay (FID) measurement can be adversely affected by transverse bias fields, particularly in the geophysical field range. A strategy that enhances the spin polarization accumulated before readout is demonstrated, by synchronizing optical pumping with a magnetic field pulse that supersedes any transverse fields by over two orders of magnitude. The pulsed magnetic field is generated along the optical pumping axis using a compact electromagnetic coil pair encompassing a micro-electromechanical systems (MEMS) vapor cell. The coils also resistively heat the cesium vapor to the optimal atomic density without spurious magnetic field contributions as they are rapidly demagnetized to approximately zero field during spin readout. The demagnetization process is analyzed electronically, and directly with a FID measurement, to confirm that the residual magnetic field is minimal during detection. The sensitivity performance of this technique is compared to existing optical pumping modalities across a wide magnetic field range. A noise floor sensitivity of 238fT/Hz was achieved in a field of approximately 50 µT, in close agreement with the Cramér–Rao lower bound predicted noise density of 258fT/Hz.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135477027","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
Butterfly-shaped and dromion-like optical similaritons in asymmetric twin-core fiber amplifier 非对称双芯光纤放大器中蝴蝶形和子形光学相似性
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-27 DOI: 10.1364/josab.501345
Soloman Thokala, Ashwin Myakalwar
{"title":"Butterfly-shaped and dromion-like optical similaritons in asymmetric twin-core fiber amplifier","authors":"Soloman Thokala, Ashwin Myakalwar","doi":"10.1364/josab.501345","DOIUrl":"https://doi.org/10.1364/josab.501345","url":null,"abstract":"Butterfly-shaped and dromion-like optical waves in a tapered graded-index waveguide (GRIN) with an external source are reported for the first time, to our knowledge. More pertinently, we obtain these waves both analytically and numerically in a generalized nonlinear Schrödinger equation (GNLSE), which describes self-similar wave propagation in GRIN with variable group-velocity dispersion (GVD), nonlinearity, gain, and source. The proposed GNLSE appertains to the study of similariton propagation through asymmetric twin-core fiber amplifiers. Dromion-like structures, which have generally been investigated in the (2+1) or higher dimensional systems, are reported in the (1+1) dimensional GNLSE with an external source. Herein, we introduce the concept of soliton management when the variable group-velocity dispersion and Kerr nonlinearity functions are suggested. For example, when the GVD parameter is perturbed, we observe the emergence of vibration of dromion-like structures. Then the dromion-like structure is transformed into oscillation by the modulation instability of the modified coefficient of the Gaussian GVD function, exhibiting interference based on two dromion-like structures. Additionally, the phenomenon of unbreakable P T symmetry of these nonlinear waves has been demonstrated for three explicit examples.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135477759","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
A Review of Diffractive Deep Neural Networks 衍射深度神经网络研究进展
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-27 DOI: 10.1364/josab.497148
Yichen Sun, mingli dong, Mingxin Yu, xiaolin liu, Lianqing Zhu
{"title":"A Review of Diffractive Deep Neural Networks","authors":"Yichen Sun, mingli dong, Mingxin Yu, xiaolin liu, Lianqing Zhu","doi":"10.1364/josab.497148","DOIUrl":"https://doi.org/10.1364/josab.497148","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135535377","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
Ultrawide tunable terahertz phase shifter based on double-layer liquid crystal-dielectric grating 基于双层液晶-介质光栅的超宽可调谐太赫兹移相器
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-25 DOI: 10.1364/josab.497577
Songlin Jiang, Fei Fan, Yun-Yun Ji, Huijun Zhao, Jie -Rong Cheng, Xianghui Wang, Shengjiang Chang
{"title":"Ultrawide tunable terahertz phase shifter based on double-layer liquid crystal-dielectric grating","authors":"Songlin Jiang, Fei Fan, Yun-Yun Ji, Huijun Zhao, Jie -Rong Cheng, Xianghui Wang, Shengjiang Chang","doi":"10.1364/josab.497577","DOIUrl":"https://doi.org/10.1364/josab.497577","url":null,"abstract":"The ultrawide tunable terahertz (THz) phase shifter has always been in high demand by THz applications, especially in terms of broadband transmission and phase modulation. In this paper, we design and fabricate a composite device that combines a double-layer liquid crystal (LC) with a double-sided etched grating metasurface. By introducing the natural anisotropy of LC based on the artificial anisotropy of the metasurface, the anisotropy of the device is significantly enhanced, and this anisotropy can be dynamically modulated by an external field. When the LC molecules rotate in the x − y plane, the experimental results show that the phase difference can vary between −83 ∘ and 277° at 0.52 THz with a large phase-shift modulation depth of 360° (i.e., 2 π ). The same phase-shift modulation depth can be obtained when the LC molecules rotate in the x − z plane, in which the phase difference can vary between 207° and 567° at 1.14 THz. Our proposed composite device shows an ultrawide phase shift regulation and an ultra-large phase-shift modulation depth in the THz regime, which may provide a new strategy for various THz phase and polarization devices.","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135769281","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
A switchable polarization‑independent THz reflector/absorber 一种可切换的偏振无关太赫兹反射/吸收器
4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-19 DOI: 10.1364/josab.501994
DONGFANG ZHOU, yan mengyao, Qikun Liu, Ziyue Wang
{"title":"A switchable polarization‑independent THz reflector/absorber","authors":"DONGFANG ZHOU, yan mengyao, Qikun Liu, Ziyue Wang","doi":"10.1364/josab.501994","DOIUrl":"https://doi.org/10.1364/josab.501994","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135063047","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
Study of the anomalous behavior of the a-HfO₂ refractive index with increasing Si doping by quantum molecular dynamics simulation 量子分子动力学模拟研究了硅掺杂增加对a-HfO 2折射率的反常行为
IF 1.9 4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-07 DOI: 10.1364/josab.500520
V. Sulimov, D. Kutov, Alexei Sulimov, Fedor Grigoriev, Alexander Tikhonravov
{"title":"Study of the anomalous behavior of the a-HfO₂ refractive index with increasing Si doping by quantum molecular dynamics simulation","authors":"V. Sulimov, D. Kutov, Alexei Sulimov, Fedor Grigoriev, Alexander Tikhonravov","doi":"10.1364/josab.500520","DOIUrl":"https://doi.org/10.1364/josab.500520","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"18 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73783645","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
Light-driven PT-symmetry in colloids with gain and loss nanoparticles 具有增益和损失纳米颗粒的胶体的光驱动pt对称性
IF 1.9 4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-06 DOI: 10.1364/josab.496493
N. Zharova, Alexander Zharov
{"title":"Light-driven PT-symmetry in colloids with gain and loss nanoparticles","authors":"N. Zharova, Alexander Zharov","doi":"10.1364/josab.496493","DOIUrl":"https://doi.org/10.1364/josab.496493","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"70 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87284877","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
Monte Carlo-based Dynamic Air-Water Cross-media Channel for Continuous-variable Quantum Key Distribution 基于蒙特卡罗的连续变量量子密钥分发动态空气-水跨媒体通道
IF 1.9 4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-06 DOI: 10.1364/josab.496138
Sijie Yun, Hao Wu, Sian Ren, Xinchao Ruan, Hang Zhang, Ying Guo
{"title":"Monte Carlo-based Dynamic Air-Water Cross-media Channel for Continuous-variable Quantum Key Distribution","authors":"Sijie Yun, Hao Wu, Sian Ren, Xinchao Ruan, Hang Zhang, Ying Guo","doi":"10.1364/josab.496138","DOIUrl":"https://doi.org/10.1364/josab.496138","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"2013 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73443132","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
Effects of neighboring transitions on electromagnetically induced absorption and transparency in $^{87}$Rb atoms with respect to varying hyperfine spacings $^{87}$Rb原子在不同超细间距下邻近跃迁对电磁感应吸收和透明度的影响
IF 1.9 4区 物理与天体物理
Journal of The Optical Society of America B-optical Physics Pub Date : 2023-09-06 DOI: 10.1364/josab.501331
Z. Jadoon, Aisar-ul Hassan, H. Noh, jin-tae kim
{"title":"Effects of neighboring transitions on electromagnetically induced absorption and transparency in $^{87}$Rb atoms with respect to varying hyperfine spacings","authors":"Z. Jadoon, Aisar-ul Hassan, H. Noh, jin-tae kim","doi":"10.1364/josab.501331","DOIUrl":"https://doi.org/10.1364/josab.501331","url":null,"abstract":"","PeriodicalId":17280,"journal":{"name":"Journal of The Optical Society of America B-optical Physics","volume":"9 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75345379","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
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