Optics letters最新文献_第6页

Line integral compressed ultrafast photography for large time-scale measurements.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.555245

Chengzhi Jin, Jiali Yao, Zhengqi Huang, Zihan Guo, Yu He, Zhen Pan, Ning Xu, Yunhua Yao, Yuecheng Shen, Lianzhong Deng, Dalong Qi, Shian Zhang

{"title":"Line integral compressed ultrafast photography for large time-scale measurements.","authors":"Chengzhi Jin, Jiali Yao, Zhengqi Huang, Zihan Guo, Yu He, Zhen Pan, Ning Xu, Yunhua Yao, Yuecheng Shen, Lianzhong Deng, Dalong Qi, Shian Zhang","doi":"10.1364/OL.555245","DOIUrl":"https://doi.org/10.1364/OL.555245","url":null,"abstract":"Compressed ultrafast photography (CUP) has attracted significant attention in the field of ultrafast optical imaging but is inherently constrained by a trade-off between sequence depth and spatial resolution. To address this limitation, we present a novel, to the best of our knowledge, system called spatial line integral CUP (LI-CUP). LI-CUP utilizes a cylindrical lens to compress each encoded time-slice frame into a spatial line, which is then recorded by a streak camera with a narrow slit. This approach transforms temporal compression into spatial compression, effectively decoupling the data compression rate from the imaging sequence depth. A deep unfolding algorithm is employed to ensure accurate reconstruction, and simulations confirm the validity of both the physical model and the algorithm. Experimental results demonstrate that the system can capture over one thousand time-slice frames of laser ablation in a single acquisition. This method significantly expands the capabilities of CUP, enabling measurements over larger time scales.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 6","pages":"1799-1802"},"PeriodicalIF":3.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630370","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

Subwavelength grating couplers for an ultrathin silicon waveguide.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.554899

Jiaqi Wang, Guoxian Wu, Si Chen, Zunyue Zhang, Hui Zhang, Xu Li, Penghao Ding, Chuxian Tan, Yu Du, Youfu Geng, Xuejin Li, Hon Ki Tsang, Zhenzhou Cheng

引用次数: 0

Inverse design fiber-to-chip couplers for the O- and C-bands. 用于 O 波段和 C 波段的反向设计光纤芯片耦合器。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.550095

Julian Pita, Paulo Dainese, Michaël Ménard

{"title":"Inverse design fiber-to-chip couplers for the O- and C-bands.","authors":"Julian Pita, Paulo Dainese, Michaël Ménard","doi":"10.1364/OL.550095","DOIUrl":"https://doi.org/10.1364/OL.550095","url":null,"abstract":"High-efficiency fiber-to-chip couplers are essential for high-performance optical interconnects. In this Letter, we experimentally demonstrate two inverse-designed silicon-on-insulator (SOI) couplers tailored for single-mode fibers (SMFs) in the C and O telecommunication bands. The O-band coupler represents the first, to the best of our knowledge, experimental demonstration of a topology-optimized coupler for this band while maintaining a minimum feature size of 120 nm. Both couplers operate at an 8° angle and are optimized for TE polarization. The C-band coupler achieves a coupling efficiency of -3.3 dB with a 3-dB bandwidth of 64 nm, while the O-band coupler reaches -3.4-dB efficiency over a 3-dB bandwidth spanning from 1292 nm to 1355 nm. Measuring 12 μm by 12 μm, these devices are designed using a single optimized silicon layer, reducing fabrication complexity and achieving efficiencies comparable to those of much larger high-performance grating couplers. Their compact size can increase integration density and contribute to reducing fabrication costs. Additionally, these couplers could be suitable for spatial division multiplexing (SDM) interconnects using multicore fibers, where the mode field diameter is compatible with single-mode fibers. They could also be used with multimode fiber configurations, where multiple couplers could be combined to generate higher-order modes.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 6","pages":"1973-1976"},"PeriodicalIF":3.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630629","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

Polymer-based O-band waveguide amplifier using NaLuF₄: Yb, Pr-PMMA nanocomposite as the gain medium. 使用 NaLuF4: Yb, Pr-PMMA 纳米复合材料作为增益介质的聚合物基 O 波段波导放大器。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.555941

Yu Yang, Siliang Tao, Zixuan Jiang, Fei Wang, Guanshi Qin, Zhixu Jia, Fanchao Meng, Dan Zhao, Weiping Qin

{"title":"Polymer-based O-band waveguide amplifier using NaLuF4: Yb, Pr-PMMA nanocomposite as the gain medium.","authors":"Yu Yang, Siliang Tao, Zixuan Jiang, Fei Wang, Guanshi Qin, Zhixu Jia, Fanchao Meng, Dan Zhao, Weiping Qin","doi":"10.1364/OL.555941","DOIUrl":"https://doi.org/10.1364/OL.555941","url":null,"abstract":"Nanoparticle (NP)-doped polymer waveguide devices have attracted increasing interest in some rapidly developing areas of broadband communications because they are easy to integrate on chip. As an important part of the gain medium of waveguide amplifiers, lanthanide-doped nanoparticles have been widely studied to improve the amplification performance of devices. However, current research work is almost limited to erbium-doped nanoparticles and amplifiers operating in the C-band. Implementing the O-band optical amplification technology remains a challenge. Here, we report a method for preparing O-band waveguide amplifiers using Yb3+ and Pr3+ co-doped nanoparticles-PMMA composite as the gain medium, recording for the first time to our knowledge a maximum optical gain of 19.4 dB/cm at 1300 nm in a polymer-based waveguide amplifier. Our results provide a valuable insight into the development of O-band polymer waveguide amplifiers with high gain. By combining with erbium-doped waveguide amplifiers (EDWAs) and thulium-doped waveguide amplifiers, amplification of the (O + S + C) band is expected to be achieved.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 6","pages":"2085-2088"},"PeriodicalIF":3.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630696","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

On-chip Mach-Zehnder interferometer for 1550 nm laser frequency stabilization.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.554895

Kang Cheng, Ning Wei, Yihui Zhang, Haixu Tao, Yibiao Hu, Jie Chen, Ningning Dong, Jiajing He, Jun Wang

引用次数: 0

Slow light waveguides based on bound states in the continuum.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.558273

Yuta Tanimura, Yuki Ishii, Kenta Takata, Takahiro Uemura, Masaya Notomi, Satoshi Iwamoto, Yasutomo Ota

引用次数: 0

360° display of 3D objects by cylindrical holography.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.553152

Lei Jiang, Jie Zhou, Mohan Wang, Jiabao Wang, Yang Wu, Jun Wang

引用次数: 0

Bistable soliton optical frequency combs in a second-harmonic generation Kerr cavity.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.551383

Francesco Rinaldo Talenti, Stefan Wabnitz, Yifan Sun, Tobias Hansson, Luca Lovisolo, Andrea Gerini, Giuseppe Leo, Laurent Vivien, Christian Koos, Huanfa Peng, Pedro Parra-Rivas

引用次数: 0

Lensless Fourier transform multiplexed digital holography.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.544103

Manoj Kumar, Lavlesh Pensia, Raj Kumar, Osamu Matoba

{"title":"Lensless Fourier transform multiplexed digital holography.","authors":"Manoj Kumar, Lavlesh Pensia, Raj Kumar, Osamu Matoba","doi":"10.1364/OL.544103","DOIUrl":"https://doi.org/10.1364/OL.544103","url":null,"abstract":"In this work, a new framework of lensless Fourier transform multiplexed digital holography (LFTMDH) is proposed, leveraging the double field of view (FoV) in a single-shot recording. The proof-of-concept system with double FoV is realized by adopting a spatially multiplexing technique by inserting a cube beam splitter in the object path. The cube beam splitter divides the object beam into two FoVs with different object information. By carefully aligning and optimizing the orientation of the cube beam splitter, these two FoVs along with a spherical reference beam (generated at the object plane) are allowed to interfere with the active region of an image sensor, resulting in a multiplexed Fourier digital hologram. The object information (amplitude and phase) is obtained by applying a single Fourier transform to the recorded digital hologram, making the technique faster with the added benefit of double FoV, compared to its counterparts. The feasibility and advantages of the proposed system are demonstrated through experimental validation and comparative analysis with the existing system. The results indicate that the proposed system not only achieves double FoV imaging in a single-shot recording but also maintains spatial resolution in the reconstructed images. Its applications span various fields, such as biological microscopy, nondestructive testing, and optical metrology, where wider FoV is crucial.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 6","pages":"1909-1912"},"PeriodicalIF":3.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630687","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

Orthogonal Bragg gratings excited by single-mode reflection peaks in multi-mode no-core fibers inscribed with a femtosecond laser for vector bend sensing.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.553908

Tianxin Duan, Xingyong Li, Rongsheng Liu, Ruohui Wang, Fengyi Chen, Xueguang Qiao

引用次数: 0