Optics letters最新文献_第9页

Broadband mid-infrared optical circulator for quantum cascade laser frequency combs. 用于量子级联激光频率梳的宽带中红外光循环器。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.563584

Baichuan Huang, Jie Liu, Michael G Soskind, Nicholas Kosan, Gerard Wysocki

{"title":"Broadband mid-infrared optical circulator for quantum cascade laser frequency combs.","authors":"Baichuan Huang, Jie Liu, Michael G Soskind, Nicholas Kosan, Gerard Wysocki","doi":"10.1364/OL.563584","DOIUrl":"https://doi.org/10.1364/OL.563584","url":null,"abstract":"We present the design and implementation of a free-space broadband mid-infrared optical circulator, particularly suitable for applications involving quantum cascade laser (QCL) frequency combs (FCs). The circulator is based on a phase-retarding mirror (PRM) and achieves an isolation level of 29.7 dB with a single-mode QCL and 25.2 dB with a QCL-FC, which significantly attenuates unwanted optical feedback (OF) for these devices. The optical circulator also offers an insertion loss of less than 0.59 dB with a QCL-FC operating at ∼10 µm, which greatly improves the optical throughput of a QCL-FC-based remote sensing system in addition to suppressing OF. As a proof-of-concept demonstration, we show that the sensitivity and stability of an open-path dual-comb spectrometer can be improved by an order of magnitude when the optical circulator is incorporated into its telescope transceiver. This circulator can be easily opto-mechanically tuned for mid-infrared sources at different wavelengths (tested down to 9.9 μm with PRM designed for 10.6 μm) and can be used with FCs as well as other broadly tunable laser sources such as external cavity QCLs.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4330-4333"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541687","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

Experimental demonstration of coupled nano-Fabry-Perot groove resonators. 耦合纳米-法布里-珀罗槽谐振腔的实验验证。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.561647

Jules Lackner, Baptiste Fix, Nathalie Bardou, Christophe Dupuis, Patrick Bouchon

引用次数: 0

Multi-azimuthal illumination total internal reflection microscopy based on dual wedge prism design. 基于双楔棱镜设计的多方位照明全内反射显微镜。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.561639

Xiaoyu Jin, Kuo Shi, Kangpeng Huang, Zhensheng Zhang, Xu Liu, Fucai Zhang

引用次数: 0

Scene-aware virtual lens group for achromatic extended depth-of-field imaging. 用于消色差扩展景深成像的场景感知虚拟透镜组。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.562599

Cui Huang, Qican Zhang, Yilan Nan, Cuizhen Lu, Tianyue He, Tingdong Kou, Junfei Shen

{"title":"Scene-aware virtual lens group for achromatic extended depth-of-field imaging.","authors":"Cui Huang, Qican Zhang, Yilan Nan, Cuizhen Lu, Tianyue He, Tingdong Kou, Junfei Shen","doi":"10.1364/OL.562599","DOIUrl":"https://doi.org/10.1364/OL.562599","url":null,"abstract":"Achieving extended depth-of-field imaging while maintaining high color fidelity remains challenging for traditional optical systems due to intrinsic trade-offs. Aside from the need for bulky optical elements, current algorithms also struggle with wavelength-dependent blur, which worsens at larger imaging depths due to nonlinear defocus and a reduced field of view. To overcome these limitations, we propose a physics-based optical-field manipulation pipeline that achieves achromatic extended depth-of-field (AEDOF) imaging using a single off-the-shelf refractive lens. The distorted light field produced by the single lens is reconstructed to enhance the utilization of physical information, bridging the gap between incoherent and coherent imaging. Multiple virtual lenses are dynamically positioned according to aberration-depth reliance, directly correcting wavefront distortions rather than relying on conventional slice-based pixel-wise processing, thus transforming high-fidelity large space-bandwidth product (SBP) imaging. Tested on various scenes, our methodology achieves state-of-the-art imaging performance, with a peak signal-to-noise ratio of 30.1322 dB. The proposed scene-aware differentiable AEDOF computational imaging approach provides a feasible and configurable solution for applications such as ultra-compact telescopes and precision biomedical diagnostics.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4238-4241"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541751","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

Spectrum prediction and inverse design of metasurfaces via transfer learning based on material similarity. 基于材料相似度迁移学习的超表面光谱预测与反设计。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.565993

Dongchun Wang, Hongping Zhou, Zhongyi Guo, Kai Guo

引用次数: 0

Study on the phenomenon of double dominant modes in a ring-core structure fiber. 环芯结构光纤中双优势模现象的研究。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.566110

Youchao Jiang, Yuzhen Zhao, Yongfu Su, Mengjuan Qin, Yafan Su, Shiying Xiao, Wenhua Ren, Guobin Ren, Fengping Yan

引用次数: 0

Nonreciprocal frequency combs by two-photon driving in cavity magnonics. 腔磁学中双光子驱动的非互易频率梳。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.562248

Yilou Liu, Kai-Kai Zhang, Rui-Shan Zhao, Xiaolong Fei, Xinchen Liu, Ziyu Jia, Xiangye Liu, Xiao-Tao Xie

引用次数: 0

Toward 6 Gbps real-time laser-based white visible light communication enabled by pilot-aided clock synchronization. 通过导频辅助时钟同步实现6gbps实时激光白光可见通信。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-07-01 DOI: 10.1364/OL.560432

Tianyi Zhang, Yitong Xie, Fei Zhang, Chao Fei, Lihong Jiang, Junwei Zhang, Jiahan Tian, Guowu Zhang, Gaoxuan Wang, Xiaojian Hong, Sailing He

{"title":"Toward 6 Gbps real-time laser-based white visible light communication enabled by pilot-aided clock synchronization.","authors":"Tianyi Zhang, Yitong Xie, Fei Zhang, Chao Fei, Lihong Jiang, Junwei Zhang, Jiahan Tian, Guowu Zhang, Gaoxuan Wang, Xiaojian Hong, Sailing He","doi":"10.1364/OL.560432","DOIUrl":"https://doi.org/10.1364/OL.560432","url":null,"abstract":"Visible light communication (VLC) integrating illumination and data transmission has emerged as a potential candidate technology for the next-generation (B5G/6G) wireless network. In this Letter, a high-speed and real-time phosphorescent laser-based white VLC system based on quadrature amplitude modulation orthogonal frequency division multiplexing (QAM-OFDM) is demonstrated using the field programmable gate array (FPGA) with a home-made miniaturized demo board (10 × 10 cm). To compensate the transmission error caused by the frequency offset between the transceiver, a simple pilot-aided clock synchronization (PCSN) scheme with approximate harmonic mean is proposed. With the BER below the forward error correction (FEC) limit of 3.8 × 10-3, 1.5-m/4.69-Gbps, 10-m/4.55-Gbps, and 19.6-m/4-Gbps real-time VLC links are experimentally achieved using the 16QAM-OFDM and PCSN scheme. With the help of a bit-loading scheme, the data rate of the designed white VLC system is pushed to 10 m/6 Gbps, indicating ∼31.87% capacity improvement in comparison with the fixed 16QAM format. To the best of our knowledge, this is the highest data rate in real-time white VLC systems that has ever been reported.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 13","pages":"4222-4225"},"PeriodicalIF":3.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541762","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

Micro-ring resonator assisted spiking neural network for efficient object detection. 微环谐振辅助脉冲神经网络的高效目标检测。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.564419

Jianping Chang, Gaoshuai Wang, Zongqing Lu, Zihan Geng

{"title":"Micro-ring resonator assisted spiking neural network for efficient object detection.","authors":"Jianping Chang, Gaoshuai Wang, Zongqing Lu, Zihan Geng","doi":"10.1364/OL.564419","DOIUrl":"https://doi.org/10.1364/OL.564419","url":null,"abstract":"Optical computing and spiking neural networks (SNNs) have garnered significant attention as next-generation technologies due to their high parallelism and low-energy consumption. However, the current implementations for realizing spiking neurons of photonic neuromorphic computing mainly rely on active devices or nonlinear effects, which pose challenges for large-scale integration and energy conservation. Moreover, most existing optical SNN applications have been limited to simple image classification tasks. To address these limitations, we propose an optical-assisted SNN model based on the passive add-drop micro-ring resonator (ADMRR), which simulates the membrane potential accumulation in spiking neurons through optical temporal integration. System-level object detection is conducted numerically by the spiking version of the modified YOLO algorithm with ADMRR-based neurons. The results show that the proposed photonic SNN achieves performance exceeding 98% of that attained by computer-based SNN on the PASCAL VOC dataset, which contains 11,530 images across 20 object categories. Our work offers advantages including simplicity, enhanced parallelism, ease of large-scale integration, and effective emulation of neuronal leakage and integration dynamics, paving the way for the widespread use of photonic SNNs in more complex image processing tasks.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4002-4005"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289557","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

Polarimetric coherent anti-Stokes Raman scattering microscopy of collagen. 胶原蛋白的偏振相干抗斯托克斯拉曼散射显微镜。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.557999

Lingxiao Yang, Janet E Sorrells, Rishyashring R Iyer, Stephen A Boppart

引用次数: 0