Optics express最新文献_第4页

Wide-range manipulation of photonic spin Hall effect via quasi-bound states in the continuum in a compound grating structure. 复合光栅结构中准束缚态对光子自旋霍尔效应的大范围操纵。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.561746

Chi Zhang, Zuhai Ma, Xuquan Liu, ZhiWei Zheng, Yu Chen, Xinxing Zhou

{"title":"Wide-range manipulation of photonic spin Hall effect via quasi-bound states in the continuum in a compound grating structure.","authors":"Chi Zhang, Zuhai Ma, Xuquan Liu, ZhiWei Zheng, Yu Chen, Xinxing Zhou","doi":"10.1364/OE.561746","DOIUrl":"https://doi.org/10.1364/OE.561746","url":null,"abstract":"The photonic spin Hall effect (PSHE), manifesting itself as the spin-dependent displacement of a light beam, holds potential applications in optical sensing and spin-based nanophotonic devices. Thus, achieving effective manipulation and enhancement of PSHE is highly meaningful. Previous works have indicated that the PSHE can be enhanced by considering the quasi-bound state in the continuum (q-BIC), which relies on the generation of Fano resonances with near-zero reflectivity. However, some limitations exist, such as the enhanced PSHE based on q-BIC is either constrained to a narrow range of incident angles a specific optical wavelength, or the quality factor is not considered. In light of the above issues, this work proposes a composite grating structure, which regulates the enhanced PSHE based on q-BIC within a wide incident angle range (approximately 10 degrees) and possesses a high quality factor. We find that the modulation of enhanced PSHE based on q-BIC can be achieved by adjusting the wavelength, the grating width, and the temperature variations of the Vanadium Dioxide (VO2) grating. The physical mechanism is that, under the influence of surface plasmon, this structure can achieve q-BIC with near-zero reflectivity over a wide range of incident angles to enhance PSHE. Moreover, we design a PSHE refractive index sensor based on this q-BIC metasurface with a high sensitivity of Sn = 88.66°/RIU.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 11","pages":"23376-23387"},"PeriodicalIF":3.2,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144294623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

All-optical scalable and programmable VCSEL-based Ising annealer with parallel feedback. 基于并行反馈的全光可扩展可编程vcsel的Ising退火炉。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.546402

Dewen Zhang, Zifeng Yuan, Thanh Xuan Hoang, Wujie Fu, Ching Eng Png, Soon Thor Lim, Aaron Danner

引用次数: 0

755 nm InP/GaAs_0.65P_0.35 quantum dot laser with polarization-dependent emission from type-I and type-II band alignments. 755 nm InP/GaAs0.65P0.35量子点激光器，具有偏振相关的发射，从i型和ii型波段对准。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.563529

Wen Gu, Boqun Zhao, Ying Xue, Kei May Lau

引用次数: 0

Optical vortex lasers [Invited]. 光学涡旋激光器[特邀]。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.555913

Jian Wang, Zhenyu Wan, Kang Li, Yuchen Zhang

{"title":"Optical vortex lasers [Invited].","authors":"Jian Wang, Zhenyu Wan, Kang Li, Yuchen Zhang","doi":"10.1364/OE.555913","DOIUrl":"https://doi.org/10.1364/OE.555913","url":null,"abstract":"The manipulation of light fields has become pivotal in advancing various domains of optics, including classical and quantum communications, optical trapping, optical metrology and high-resolution imaging. Among various techniques for creating optical vortices, the optical vortex lasers, distinguished by directly emitting customized beams with phase or polarization singularities, have emerged as a burgeoning tool in modern optics. This paper summarizes the recent progress of optical vortex lasers including their primary types, designing methods and diverse applications. We begin by introducing the underlying principles of optical vortices and then explore numerous methods for designing optical vortex lasers, including bulk laser, fiber laser and on-chip laser. We also highlight the optical vortex laser towards higher dimensions for shaping structured beams with more complex spatial and topological patterns. Furthermore, we outline the wide applications of optical vortex lasers and address their challenges and potential future developments. This paper serves as a thorough overview for the physics, optics and engineering communities looking to harness potential of optical vortex lasers in cutting-edge applications.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 11","pages":"22711-22744"},"PeriodicalIF":3.2,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144294482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Automatic design method for miniature aspheric lens based on modified basin-hopping algorithm. 基于改进跳盆算法的微型非球面自动设计方法。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.563233

Fujian Dai, Huajun Feng, Zhihai Xu

{"title":"Automatic design method for miniature aspheric lens based on modified basin-hopping algorithm.","authors":"Fujian Dai, Huajun Feng, Zhihai Xu","doi":"10.1364/OE.563233","DOIUrl":"https://doi.org/10.1364/OE.563233","url":null,"abstract":"Against the backdrop of the rapid development of the miniature camera lens manufacturing industry, with an annual output exceeding 4 billion units (including various lenses for mobile phones, automobiles, security, etc.), the design of highly aspherical miniature camera lenses has become increasingly crucial. Traditional optical design methods rely heavily on designer intervention and are optimized step by step through a trial-and-error approach, which consumes a great deal of time and effort. To address this, this paper innovatively proposes a design method based on the modified basin-hopping (MBH) algorithm, enabling the rapid and automatic design of highly aspherical miniature camera lenses without the need for designer intervention throughout the process. Users only need to input design requirements, and the program can automatically generate multiple solutions. Designers simply need to select from the output solutions. In this paper, this method is successfully applied to design two different types of miniature aspheric camera lenses: a 4P (4 Plastic lenses) mobile phone lens with highly aspheric surfaces and an ultra-wide-angle ADAS (advanced driver assistance systems) lens. The designed lenses exhibit excellent imaging quality. This method effectively shortens the development-to-market cycle and reduces the engineering design threshold, fully demonstrating its innovation, effectiveness, and practicality.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 11","pages":"22570-22587"},"PeriodicalIF":3.2,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144294494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Brillouin random lasing resonance enabled fast light and superluminal propagation in optical fibers. 布里渊随机激光共振实现了光纤中的快光和超光速传播。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.559694

Haoran Xie, Zhelan Xiao, Zhiming Liu, Liwen Sheng, Li Zhan, Fufei Pang, Liang Zhang

{"title":"Brillouin random lasing resonance enabled fast light and superluminal propagation in optical fibers.","authors":"Haoran Xie, Zhelan Xiao, Zhiming Liu, Liwen Sheng, Li Zhan, Fufei Pang, Liang Zhang","doi":"10.1364/OE.559694","DOIUrl":"https://doi.org/10.1364/OE.559694","url":null,"abstract":"We proposed and demonstrated fast light and superluminal propagation based on Rayleigh scattering-induced Brillouin random lasing resonance in optical fibers. A theoretical model of the proposed Brillouin superluminal propagation system has been established, detailing the principle of optical group velocity manipulation based on the combination of stimulated Brillouin scattering and Brillouin cross-gain modulation, for the first time to the best of our knowledge. Thanks to the randomly distributed Rayleigh scattering, Brillouin random lasing resonance with a single-longitudinal-mode lasing operation essentially contributes to fast light and superluminal propagation of the pump light signals propagating along a kilometer-long optical fiber. The temporal advancement, group velocity, and group index of sinusoidally modulated pump signals are thoroughly compared in experiments, which agree well with simulations. The dependence of the Brillouin gain fibers on the group velocity as well as the impact of Stokes power under different signal modulation frequencies on the broadening factor are systematically discussed and characterized. Furthermore, the Brillouin random lasing fast-light system is developed to offer a unique time-domain analysis solution for high-sensitivity fiber Bragg grating (FBG) temperature sensing scheme. Scalable sensitivity of the proposed sensing system can be achieved by applying different modulation frequencies. These findings may find wide potential applications in optical signal processing and hyper-sensitive detection.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 11","pages":"22497-22510"},"PeriodicalIF":3.2,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144294497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Characterization and simulation of gallium vacancies in the InGaN layer. InGaN层中镓空位的表征与模拟。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.562892

Fangzhi Li, Jianping Liu, SiYi Huang, Fan Zhang, Aiqin Tian, Yaqin Li, Lei Hu, Xuan Li, Hui Yang

引用次数: 0

Diagnosis model for mouse lung cancer based on terahertz spectroscopy and a transformer network. 基于太赫兹光谱和变压器网络的小鼠肺癌诊断模型。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.557840

Jianwei Li, Shisheng Zhao, Xuxu Ma, Ziyu Li, Xichuan Li

{"title":"Diagnosis model for mouse lung cancer based on terahertz spectroscopy and a transformer network.","authors":"Jianwei Li, Shisheng Zhao, Xuxu Ma, Ziyu Li, Xichuan Li","doi":"10.1364/OE.557840","DOIUrl":"https://doi.org/10.1364/OE.557840","url":null,"abstract":"Terahertz time-domain spectroscopy technology offers a non-destructive and non-invasive approach to elucidating microstructure and chemical properties of cancer tissues, providing significant advantages for early diagnosis and monitoring. However, challenges such as the presence of outliers, sample class imbalance, and limited diagnostic accuracy persist. To enhance dataset quality, the boxplots were applied to identify and remove abnormal data, and the Savitzky-Golay filter was employed for spectral denoising in this paper. A high-quality dataset comprising 1,028 spectra from normal mouse lung tissues and 1,547 spectra from mouse lung cancer tissues was obtained. To address the shortage of normal lung tissue samples, a Wasserstein generative adversarial network with gradient penalty was utilized. Furthermore, to improve diagnostic accuracy, we developed a novel diagnostic model, MSFPT-Net. This model integrated seven distinct terahertz spectral features and employed a feature pyramid network to extract multi-scale representations, alongside a Transformer network to capture long-range dependencies within spectral sequences. The processed features were subsequently input into a fully connected network to achieve precise lung cancer diagnosis. Experimental results indicate that MSFPT-Net achieves outstanding performance across six evaluation metrics and opens new possibilities for lung cancer diagnosis and treatment.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 11","pages":"23178-23193"},"PeriodicalIF":3.2,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144294517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhanced thermal conductivity of distributed face-cooled composite laser medium included thermal resistance at the bonding interface. 分布面冷复合激光介质导热系数的增强包括粘接界面处的热阻。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.554536

Yoichi Sato, Arvydas Kausas, Takunori Taira

{"title":"Enhanced thermal conductivity of distributed face-cooled composite laser medium included thermal resistance at the bonding interface.","authors":"Yoichi Sato, Arvydas Kausas, Takunori Taira","doi":"10.1364/OE.554536","DOIUrl":"https://doi.org/10.1364/OE.554536","url":null,"abstract":"A new concept of the effective thermal conductivity (κeff) of the laser gain medium with the distributed face-cooled composite synthesized by the inter-layer surface activated bonding (il-SAB) has been proposed. The thermal resistances at the bonded interface (R) between 1at.% Nd:YAG and a c-cut sapphire single crystal in several composites were experimentally confirmed and it was found that il-SAB brings negligibly small R. On the contrary, R in the bi-layer composite of 1at.% Nd:YAG and sapphire sandwiching indium foil fabricated by 6.0-kN uniaxial pressing reached 1.4 × 10-5 m2K/W at 25°C. In the case of the simple contact of 1at.% Nd:YAG and a sapphire single crystal, R at 25°C was 4.3 × 10-4 m2K/W. Consequently, effective thermal conductivities in bi-layered composites with 1at.% Nd:YAG and c-cut sapphire with the same thickness fabricated by il-SAB, sandwiching indium foil, and simple contacting without bonding were evaluated to be 15.3 W/mK, 13.9 W/mK, and 3.65 W/mK, respectively. Negligible R of composite gain media by il-SAB indicates that κeff of 1at.% Nd:YAG will be improved from 10 W/mK to more than 30 W/mK if sapphire parts are thicker than 12.2 times of YAG parts in composite gain media with the distributed face-cooling structure.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 11","pages":"24039-24049"},"PeriodicalIF":3.2,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144294526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhancing four-wave mixing efficiency in optical fibers: the role of core radius fluctuations and mitigation strategies. 提高光纤中的四波混频效率：芯半径波动的作用和减缓策略。

IF 3.2 2区物理与天体物理

Optics express Pub Date : 2025-06-02 DOI: 10.1364/OE.558307

Thjalfe Ulvenberg, Jacob Gade Koefoed, Lars Søgaard Rishøj, Michael Galili, Karsten Rottwitt

引用次数: 0