Optics letters最新文献_第7页

Enhanced performance of Ga₂O₃-based MSM-PD by Fabry-Pérot microcavity. fabry - p<s:1>微腔法增强ga2o3基MSM-PD的性能。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.573765

Taoan Wang, Xiyao He, Hao Xu, Ruoting Sun, Xiangyu Xu, Kelvin Hongliang Zhang, Hao Long

{"title":"Enhanced performance of Ga2O3-based MSM-PD by Fabry-Pérot microcavity.","authors":"Taoan Wang, Xiyao He, Hao Xu, Ruoting Sun, Xiangyu Xu, Kelvin Hongliang Zhang, Hao Long","doi":"10.1364/OL.573765","DOIUrl":"https://doi.org/10.1364/OL.573765","url":null,"abstract":"Ga2O3-based metal-semiconductor-metal (MSM) solar-blind photodetectors, valued for their wide bandgap and stability, are among the most promising options. However, key metrics such as detectivity, wavelength selectivity, and response time were largely constrained by the intrinsic properties of Ga2O3 and were difficult to enhance through optical design due to the fixed device structure. To address this, this study introduced a distributed Bragg reflector (DBR) structure in the UVC band between the sapphire substrate and Ga2O3 epilayer, forming a Fabry-Pérot (FP) resonant cavity with the Ga2O3/air interface. The incorporation of the FP microcavity significantly enhanced the UVC photon density of states (DOS) within the Ga2O3 thin film while suppressing that of other wavelength bands. As a result, the selectivity ratio was improved by 29.4 times (R251nm/R360nm=1.6×104), and the device's detectivity as well as rise/fall times were also optimized. This work provided a novel, to the best of our knowledge, design strategy for high-performing solar-blind PDs.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6097-6100"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207260","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

Multiple toroidal dipoles governed by mirror-coupled bound states in the continuum in a nanopillar array for a low-threshold nanolaser. 低阈值纳米激光器中连续体中由镜像耦合束缚态控制的多环面偶极子。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.568444

YanYan Huo, Yuqian Zhang, Qi Tang, Xinyu Liu, Tiantian Sun, Tingyin Ning, Lina Zhao, Yingying Ren, Xianfeng Chen

{"title":"Multiple toroidal dipoles governed by mirror-coupled bound states in the continuum in a nanopillar array for a low-threshold nanolaser.","authors":"YanYan Huo, Yuqian Zhang, Qi Tang, Xinyu Liu, Tiantian Sun, Tingyin Ning, Lina Zhao, Yingying Ren, Xianfeng Chen","doi":"10.1364/OL.568444","DOIUrl":"https://doi.org/10.1364/OL.568444","url":null,"abstract":"Toroidal dipoles (TDs) exhibit strong field confinement and high-quality factor resonances, making them promising for light-matter interactions, though their weak strength limits applications. However, complex metasurface designs hinder their practical use. Here, we show that a simple nanopillar array supports both electric (ETD) and magnetic (MTD) TD modes governed by a mirror-coupled quasi-bound state in the continuum (BIC) without requiring symmetry breaking, which significantly enhances their quality factors. To further elucidate the characteristics of the ETD and MTD modes, their lasing behaviors are analyzed using a four-level two-electron energy diagram. The results reveal that nanolasers based on these modes exhibit lower thresholds, with calculated values of about ~0.5503 µJ/cm2 for the ETD mode and ~0.87 µJ/cm2 for the MTD mode. These findings underscore the potential of ETD and MTD modes for efficient nanophotonic applications, offering a promising pathway for the development of low-threshold nanolasers and other advanced photonic devices.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6109-6112"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207263","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

Fabry-Perot interferometer with a quantum well mirror for controllable dispersion compensation. 可控制色散补偿的量子阱镜法布里-珀罗干涉仪。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.572092

Victor N Mitryakhin, Pavel Yu Shapochkin, Roman S Nazarov, Yury P Efimov, Sergey A Eliseev, Vyacheslav A Lovcjus, Yury V Kapitonov

引用次数: 0

Photoacoustic imaging with constant light intensity and time-modulated absorption. 具有恒定光强和时间调制吸收的光声成像。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.573400

Olivier Jacquin, Olivier Hugon, Eric Lacot, Emmanuel Bossy

{"title":"Photoacoustic imaging with constant light intensity and time-modulated absorption.","authors":"Olivier Jacquin, Olivier Hugon, Eric Lacot, Emmanuel Bossy","doi":"10.1364/OL.573400","DOIUrl":"https://doi.org/10.1364/OL.573400","url":null,"abstract":"Photoacoustic imaging is generally based on photoacoustic generation induced by the absorption of a light beam with a time-modulated light intensity, whether in the time domain with nanosecond pulses or in the frequency domain with a modulation frequency in the MHz range. In this Letter, we introduce an optical-resolution photoacoustic microscopy technique based on time-modulated absorption, with a beam of constant geometry and constant intensity. More specifically, we consider the case of linear dichroic absorbing samples, which are shown theoretically and experimentally to generate a harmonic photoacoustic signal at angular frequency 2ωrot, when illuminated with linearly polarized light whose polarization direction rotates with angular frequency ωrot. The amplitude and phase of the photoacoustic signal are related to the amount of linear dichroism and to its orientation, respectively. As a unique feature of the proposed approach, photoacoustic signals are generated only from linear dichroic absorbers, with no background signals generated from non-dichroic absorbing structures.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"5998-6001"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207044","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

Stochastic collapse and recovery of optical solitons in harmonic mode-locked lasers under pump perturbations. 泵浦扰动下谐波锁模激光器中光孤子的随机坍缩和恢复。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.571324

Benhai Wang, Xiaocong Wang, Wenbin He, Xintong Zhang, Qi Huang, Jiachen Wu, Haochen Lin, Yu Jiang, Ruchen Lv, Shunxian Luo, Meng Pang

引用次数: 0

Chromatic aberration compensation in multiplex coherent Raman microscopy using a Bessel beam. 贝塞尔光束在多重相干拉曼显微镜中的色差补偿。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.574997

Ryosuke Oketani, Kyosuke Tanaka, Yusuke Murakami, Hideaki Kano

引用次数: 0

Single-shot double-field-of-view polarization holography. 单镜头双视场偏振全息术。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.568469

Manoj Kumar, Osamu Matoba

{"title":"Single-shot double-field-of-view polarization holography.","authors":"Manoj Kumar, Osamu Matoba","doi":"10.1364/OL.568469","DOIUrl":"https://doi.org/10.1364/OL.568469","url":null,"abstract":"What we believe to be a novel approach of quantitative polarization digital holography that simultaneously captures polarization-resolved information across a double field of view (FOV) is proposed and experimentally demonstrated. By integrating polarization-sensitive detection with a spatial multiplexing strategy, the method enables the acquisition of two distinct holographic scenes within a single exposure-each with independent spatial coverage and polarization contrast. This configuration allows for vectorial imaging while effectively extending the system's spatial observation range without compromising temporal resolution. The measurement accuracy and imaging performance of the proposed double FOV polarization-sensitive digital holography are confirmed on anisotropic materials, and the outcomes support its applicability. The technique offers significant advantages for applications requiring wide-area monitoring with polarization sensitivity, such as biomedical imaging, material characterization, and remote sensing. Experimental demonstrations validate the system's ability to reconstruct full-Stokes parameters across both FOVs with high fidelity, opening a new avenue for efficient, real-time polarization imaging across extended spatial domains.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6241-6244"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207213","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

A high-reliability dual Fabry-Perot cavity vibration sensor with an L-shaped optical path. 具有l型光路的高可靠性双法布里-珀罗腔振动传感器。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.572411

Hongcheng Zhao, Juqin Feng, Qiuxia Zhao, Jianjun Chen, Ning Wang

{"title":"A high-reliability dual Fabry-Perot cavity vibration sensor with an L-shaped optical path.","authors":"Hongcheng Zhao, Juqin Feng, Qiuxia Zhao, Jianjun Chen, Ning Wang","doi":"10.1364/OL.572411","DOIUrl":"https://doi.org/10.1364/OL.572411","url":null,"abstract":"We present a high-reliability fiber-optic Fabry-Perot vibration sensor with an L-shaped optical path and dual Fabry-Perot cavities. Two interferometric cavities were constructed using the nickel-based alloy Inconel 718 and sapphire materials to achieve temperature self-compensation. Additionally, an L-shaped optical path was adopted to enhance the sensor's deployment flexibility in confined environments. The sensor was also employed with a reliability packaging design, which further enhances its adaptability in harsh environments such as high temperatures and corrosive conditions. Experimental results show that the sensor exhibits a sensitivity of 41.235 nm/g, a resonance frequency of 2372.8 Hz, and a maximum measurement range of 110.85 g. It also showed stable operation during the temperature adaptability test within the range of 25-300°C. Furthermore, the sensor exhibits excellent consistency and stability during temperature cycling and long-term monitoring, with no noticeable drift observed throughout the testing period. This work proposes an effective solution for enhancing the reliability and environmental adaptability of fiber-optic Fabry-Perot vibration sensor under complex working conditions.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6040-6043"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207217","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

Liquid volume fraction and droplet sizing in atomizing sprays using polarization ratio with dual structured laser illumination planar imaging. 双结构激光照射平面成像雾化喷雾中液体体积分数和液滴尺寸。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.563173

Sebastien Garcia, Vassily Kornienko, Mehdi Stiti, Elias Kristensson, Edouard Berrocal

引用次数: 0

Millisecond laser ablation of metal assisted by high-energy nanosecond laser-induced air filament. 高能纳秒激光诱导空气丝辅助金属的毫秒激光烧蚀。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.574846

Zhou Li, Junyang Xu, Xianshi Jia, Kai Li, Cong Wang

{"title":"Millisecond laser ablation of metal assisted by high-energy nanosecond laser-induced air filament.","authors":"Zhou Li, Junyang Xu, Xianshi Jia, Kai Li, Cong Wang","doi":"10.1364/OL.574846","DOIUrl":"https://doi.org/10.1364/OL.574846","url":null,"abstract":"Combined Pulse Laser (CPL) irradiation provides substantial benefits for high-energy laser damage studies. However, in most reported CPL schemes, the millisecond laser is restricted to small spots (hundreds of microns) and peak power densities around 106 W/cm2, which are far from practical damage conditions. Here, we propose a filament-assisted CPL strategy in which high-energy nanosecond pulses (0.4-1.0 J) are focused by a 1 m lens to generate a 3-5 cm-long air filament, intersecting a millisecond laser beam (1.2 mm spot, 4.42 × 104 W/cm2) at ~15°. This configuration enables efficient energy coupling between the filament plasma and the heated target. Experimental results reveal that the filament-assisted CPL increases ablation depth from 0.09 mm to 1.01 mm and boosts material removal efficiency from 0.11 mm3/J to 1.55 mm3/J. An integrated diagnostic system combining high-speed thermography, high-speed imaging, and morphological characterization was used to analyze the ablation dynamics. The proposed CPL approach significantly improves ablation effectiveness and offers a promising pathway for advanced high-energy laser damage applications.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6217-6220"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207224","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