Optics letters最新文献_第5页

High-speed lateral-scanning white-light interferometry for etched arrays with vertical off-axis compensation. 垂直离轴补偿刻蚀阵列的高速横向扫描白光干涉测量。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.558647

Hang Zhao, Qizhe Wu, Zedi Li, Shiyuan Liu, Jinlong Zhu

引用次数: 0

Light-assisted precise control of micro-cavity lasers for lead halide perovskite nanorods. 卤化铅钙钛矿纳米棒微腔激光器的光辅助精确控制。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.564876

Zhen Meng, Yongfeng Liu, Jie Yang, Chuyu Hou, Shuaiqi Li, Yexiong Huang, Jingwen Yao, Ke Wang, Zhengzheng Liu, Mingyu Pi, Juan Du, Dingke Zhang

{"title":"Light-assisted precise control of micro-cavity lasers for lead halide perovskite nanorods.","authors":"Zhen Meng, Yongfeng Liu, Jie Yang, Chuyu Hou, Shuaiqi Li, Yexiong Huang, Jingwen Yao, Ke Wang, Zhengzheng Liu, Mingyu Pi, Juan Du, Dingke Zhang","doi":"10.1364/OL.564876","DOIUrl":"https://doi.org/10.1364/OL.564876","url":null,"abstract":"The development of integrated on-chip lasers featuring both low thresholds and high-quality factors remains a fundamental challenge in photonic integrated circuits, particularly for applications requiring visible coherent light sources. To develop micro-/nanolasers with high robustness and reliability, the fabrication of resonant cavities with controllable morphology and size is essential. In this work, we employed a light-assisted self-assembly approach to direct the formation of CsPbBr3 quantum dots into uniform, high-quality nanorods (NRs). By precisely tuning the illumination time, the growth dynamics of the NRs were effectively regulated, resulting in well-defined resonators with improved light confinement and lasing efficiency. Transient absorption spectroscopy revealed suppressed nonradiative Auger recombination and enhanced radiative bimolecular recombination. These NRs functioned simultaneously as the gain medium and the resonant cavity, enabling nanosecond-sustained amplified spontaneous emission (ASE) (62.49 μJ/cm2) and femtosecond lasing at room temperature.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4050-4053"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289556","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

Multiband microwave photonic radar with increased target detection ability. 增加目标探测能力的多波段微波光子雷达。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.566671

Jinxin Li, Yuhang Xie, Jianghai Wo, Xudong Wang, Jianping Yao

{"title":"Multiband microwave photonic radar with increased target detection ability.","authors":"Jinxin Li, Yuhang Xie, Jianghai Wo, Xudong Wang, Jianping Yao","doi":"10.1364/OL.566671","DOIUrl":"https://doi.org/10.1364/OL.566671","url":null,"abstract":"We propose and demonstrate a novel, to the best of our knowledge, multiband microwave photonic radar, with increased target detection ability. An optical frequency shifting loop (OFSL) is employed in which a pulsed optical carrier modulated by a linearly frequency-modulated (LFM) waveform is recirculating in the loop to generate a series of optical waveforms with increased central frequencies and bandwidths. By beating the optical waveforms at the output of the OFSL with the optical carrier, a multiband LFM microwave waveform is generated, which is transmitted to free space via an antenna. At the same time, a portion of the multiband microwave waveform is sent to the radar receiver as a reference waveform. At the radar receiver, the multiband microwave waveform reflected by a target is received, which is de-chirped by mixing it with the reference waveform. Experimental verification of a radar system consisting of three-band (C-band, X-band, and Ku-band) LFM waveforms with instantaneous bandwidths of 1, 2, and 3 GHz, respectively, is performed. The range resolutions for the three bands are measured to be 15.98, 8.39, and 5.64 cm, respectively. By leveraging different frequency bands, the multiband radar can mitigate the limitations of single-band radars, such as material absorption and resolution constraints, to provide optimal performance in terms of detection range, range resolution, and detectability.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4094-4097"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289559","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

OCT in dermatology: a process for determining whether a fully diversified dataset is needed for AI model-building. 皮肤病学OCT：一个确定人工智能模型构建是否需要完全多样化数据集的过程。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563493

Qiuyun Xu, Amanda P Siegel, Josee M D Smith, Joseph W Fakhoury, Maria Tsoukas, Hayden Smith, Chiu-Lan Chen, Steven Daveluy, Darius Mehregan, Julia Welzel, Eric R Tkaczyk, Kamran Avanaki

{"title":"OCT in dermatology: a process for determining whether a fully diversified dataset is needed for AI model-building.","authors":"Qiuyun Xu, Amanda P Siegel, Josee M D Smith, Joseph W Fakhoury, Maria Tsoukas, Hayden Smith, Chiu-Lan Chen, Steven Daveluy, Darius Mehregan, Julia Welzel, Eric R Tkaczyk, Kamran Avanaki","doi":"10.1364/OL.563493","DOIUrl":"https://doi.org/10.1364/OL.563493","url":null,"abstract":"Optical coherence tomography (OCT) has sufficient depth penetration for detection of skin pathologies, but its detection effectiveness can be aided by the assistance of artificial intelligence (AI) modeling. AI model-building identifies pathologies by comparing images from healthy and diseased tissues, but healthy skin can present as quite variable across skin types and ages. Here, we selected a commonly used parameter for skin analysis and attenuation coefficient and analyzed how it varied in the dermis and epidermis, and in skin-exposed and skin-protected regions, for 100 subjects from a wide range of skin types (Fitzpatrick types I-V) and ages (13-83). For the statistical analysis, we report whether comparisons of the dermis and epidermis and sun-exposed and sun-protected areas across age and skin type are statistically significant, indeterminate, or not statistically significant and present 95% confidence intervals for this parameter as it ranges across different ages and skin types. This process of pre-analyzing features using healthy images provides a roadmap for how to ease the recruitment process while acquiring a sufficient range of images for effective AI model-building. We expect this type of analysis can have the effect of accelerating translation of AI-based OCT image analysis to the clinic.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3947-3949"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289563","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

Spin selectivity of H₂O isomers in vapors above boiling water demonstrates more than 5:1 ortho-/para-ratio. H2O同分异构体在沸水以上蒸汽中的自旋选择性大于5:1。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.559042

Eugene V Stepanov, Sergey M Pershin

引用次数: 0

Correspondence imaging using mixed illumination patterns in complex environments with random disturbances. 在具有随机干扰的复杂环境中使用混合照明模式的对应成像。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563798

Zhihan Xu, Wen Chen

{"title":"Correspondence imaging using mixed illumination patterns in complex environments with random disturbances.","authors":"Zhihan Xu, Wen Chen","doi":"10.1364/OL.563798","DOIUrl":"https://doi.org/10.1364/OL.563798","url":null,"abstract":"Optical imaging with single-pixel detection could not work well in some complex scenarios, when a single type of illumination patterns is applied. Here, we report on correspondence imaging (CI) with mixed illumination patterns to achieve high-quality object reconstruction and high robustness in complex environments with random disturbances. A series of mixed illumination patterns are generated to be displayed alternately, i.e., sinusoidal patterns and random patterns. The dynamic scaling factors induced by complex environments with random disturbances are estimated from the sequence of collected light intensities obtained when random patterns are used and then are applied to correct the sequence of collected light intensities obtained when sinusoidal patterns are used. The series of corrected light intensities is employed for an initial reconstruction, and an object image is finally recovered by using a physics-enhanced neural network (PENet) without the use of training data. It is illustrated in optical experiments that the proposed method achieves high robustness in complex environments with random disturbances, and the recovered object images are of high fidelity. The proposed method can open an avenue to establish high-performance CI systems in complex environments with random disturbances.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3860-3863"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289503","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

Diffractive optical neural network for dual-wavelength vectorial vortex beams de-/multiplexing. 双波长矢量涡旋光束解/复用的衍射光神经网络。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.564618

Zehui Lu, Shaoxiang Duan, Hao Zhang, Wei Lin, Haifeng Liu, Bo Liu, Fan Jia

引用次数: 0

Hybrid holographic modal wavefront sensing for improved aberration correction. 改进像差校正的混合全息模态波前传感。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.566308

Anitta Jomy, Amritha Jayan, C S Narayanamurthy, Dinesh N Naik, Biswajit Pathak

引用次数: 0

Mobile full-duplex deep-ultraviolet light communication network. 移动全双工深紫外光通信网络。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.561480

Ziqian Qi, Linning Wang, Pengzhan Liu, Yingze Liang, Jiayao Zhou, Xinjie Mo, Jiahao Gou, Lei Zhang, Hongbo Zhu, Yongjin Wang

引用次数: 0

Multi-wavelength edge detection based on nonlocal multilayer GaAs-AlAs thin films. 基于非局域多层GaAs-AlAs薄膜的多波长边缘检测。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.563259

Sina Mohammadi, Matthew Markowitz, Francesco Monticone, Mohammad Ali Miri, Maria Tamargo

{"title":"Multi-wavelength edge detection based on nonlocal multilayer GaAs-AlAs thin films.","authors":"Sina Mohammadi, Matthew Markowitz, Francesco Monticone, Mohammad Ali Miri, Maria Tamargo","doi":"10.1364/OL.563259","DOIUrl":"https://doi.org/10.1364/OL.563259","url":null,"abstract":"We demonstrate a compact multilayer GaAs-AlAs structure for passive optical edge detection at multiple wavelengths. Through the inverse design of the layer thicknesses, this structure manipulates spatial frequency components of an incoming wavefront, selectively reflecting high-frequency features while suppressing low-frequency intensity variations. Simulations reveal a reflectance transition from minimal to near-total as a function of numerical aperture, a property leveraged for enhancing edge contrast in optical imaging. For the first time, to our knowledge, we utilize molecular beam epitaxy (MBE) to fabricate edge detection devices, ensuring structural fidelity. Material characterization confirms high-quality interfaces, precise thickness control, and excellent uniformity, validating the suitability of MBE for this application. Experimental angle-resolved reflectance measurements closely align with theoretical predictions, demonstrating the feasibility of this approach for real-time, hardware-based optical image processing. The proposed design automatically works for at least two wavelengths and can be readily extended to operate at multiple wavelengths simultaneously. This work opens new possibilities for employing multilayer interference structures in high-performance optical imaging and real-time signal processing.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3856-3859"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289561","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