Optics letters最新文献_第2页

Multichannel high-saturation photodetection technology for a femtosecond pulse optical measurement system.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.550545

Yaru Yang, Yifeng Li, Yumo Tian, Meiling Yang, Shenda Zhang, Shuguo Xie, Yan Yang

{"title":"Multichannel high-saturation photodetection technology for a femtosecond pulse optical measurement system.","authors":"Yaru Yang, Yifeng Li, Yumo Tian, Meiling Yang, Shenda Zhang, Shuguo Xie, Yan Yang","doi":"10.1364/OL.550545","DOIUrl":"https://doi.org/10.1364/OL.550545","url":null,"abstract":"A femtosecond pulse downconverts broadband electromagnetic signals to the hundreds of MHz range, enabling fast measurement and enhancing electromagnetic monitoring efficiency. However, due to the high peak power of optical pulses, the received power of the detector is severely limited, and thus the sensitivity of the system is reduced. To address this problematic issue, this paper presents a multichannel parallel high-saturation optical power-balanced photodetection technique that uses parallel reception to enhance the detector's received power, thereby improving the signal-to-noise ratio (SNR) and system sensitivity. To achieve the synthesis of multiple received signals, a miniature power divider filter, which achieves high amplitude and phase consistency through a slow-wave transmission structure loaded with interdigital capacitors and serpentine inductors, is suitably designed. The operating frequency of this structure ranges from 105 to 210 MHz with an amplitude imbalance of less than 0.01 dB and a phase difference of less than 0.04°. Compared to similar designs, the area is reduced by 92.3%. The designed high-saturation photodetector allows an input saturation light power of 15 dB, and the detection system achieves a sensitivity of better than 4 mV/m. In the frequency range of 3-12 GHz, the sensitivity remains above 0.3 mV/m, representing a 14 dB improvement over commercial detectors.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 6","pages":"2033-2036"},"PeriodicalIF":3.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630544","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

Moiré metasurface for dynamically tuned vector beams.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.549470

Changke Bu, Wen Xing, Wenjing Yue, Yang Li, Guiqiang Du, Cong Wang, Song Gao

{"title":"Moiré metasurface for dynamically tuned vector beams.","authors":"Changke Bu, Wen Xing, Wenjing Yue, Yang Li, Guiqiang Du, Cong Wang, Song Gao","doi":"10.1364/OL.549470","DOIUrl":"https://doi.org/10.1364/OL.549470","url":null,"abstract":"The vector beam (VB), characterized by the spatially non-uniform distribution of polarization states, shows broad prospects in the photonics field. Recently, the development of metasurfaces offers novel (to the best of our knowledge) opportunities for manipulating VB, yet most efforts lack dynamic control over its polarization order. In this Letter, a general and facile method for dynamically tuning the polarization order of VB is proposed and validated by a silicon-based Moiré metasurface in the visible band. The continuous phase tunability of the Moiré effect is first utilized to tailor the topological charges of a focused vortex beam. Furthermore, geometric phase is specially induced in designing the Moiré metasurface so that two vortex beams carrying opposite topological charges can be accomplished upon orthogonal circular-polarization incidences. Consequently, under linear polarization incidence, the superposition of the vortex beams finally leads to the generation of a VB, whose polarization order is dynamically tuned by rotating the Moiré metasurface. We anticipate that the proposed method will provide promising prospects in meta-optics with reconfigurable functionalities.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 6","pages":"1823-1826"},"PeriodicalIF":3.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630392","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

Off-axis angular velocity detection with incoherent light.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.554510

Yiyi Hang, Xingyuan Lu, Xuechun Zhao, Xiaotan Lu, Hao Zhang, Yangjian Cai, Chengliang Zhao

引用次数: 0

Dye-doped polymer-coated optical fiber optofluidic laser for refractive index sensing.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.545880

Hongrui Zhang, Lirong Ren, Bo Han, Like Li, Ya-Nan Zhang

引用次数: 0

High-efficiency de-scattering 3D measurement with a single exposure based on polarization angle shifting.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.555543

Mingke Lei, Qican Zhang, Yajun Wang

{"title":"High-efficiency de-scattering 3D measurement with a single exposure based on polarization angle shifting.","authors":"Mingke Lei, Qican Zhang, Yajun Wang","doi":"10.1364/OL.555543","DOIUrl":"https://doi.org/10.1364/OL.555543","url":null,"abstract":"The issue of scattering effect is common in imaging and optical 3D measurements, which introduces global illumination into the classical geometrical optics model. Separating the interested information from complex global-direct illumination often poses significant challenges. However, to suppress the global illumination, the conventional polarized modulated method generally requires manual adjustment to obtain multiple signals, which strictly limits the real-time detection and adaptability. To solve this problem, based on our analysis for the intensity distribution of four channels of the polarization camera from Malus's law, we establish a polarization angle shifting (PAS) model and further propose a separation strategy to efficiently achieve global-direct light transmission component pixel-by-pixel separation with a single exposure. And the proposed method eliminates the limitation of the linear polarization of the light source. With the proposed method, we could obtain contamination-free phase of scattering interface and global information imaging. Experimental results in a structured light measurement system confirm the effectiveness of the method for separation imaging, and the final de-scattering 3D phase results are also shown.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 6","pages":"2001-2004"},"PeriodicalIF":3.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630623","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

Ink-sprayed transparent ceramic multilayer planar waveguides for ribbon lasers.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.554532

Ross Osborne, Nerine Cherepy, Romain Gaume, Joseph Boro, Stephen Payne

引用次数: 0

35-fs diode-pumped mode-locked ytterbium-doped multi-component alkaline-earth fluoride laser.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.555489

Zhen Zhang, Zhi-Qiang Li, Pavel Loiko, Huang-Jun Zeng, Ge Zhang, Zhang-Lang Lin, Simone Normani, Alain Braud, Fengkai Ma, Xavier Mateos, Hsing-Chih Liang, Valentin Petrov, Dapeng Jiang, Liangbi Su, Weidong Chen

引用次数: 0

Block-based single-pixel imaging by means of the Talbot effect.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.550906

Erick Ipus, Armin J M Lenz, Vicente Duran, Lluís Martínez-León, Jesús Lancis, Enrique Tajahuerce

引用次数: 0

Three-dimensional polarization states generated from random paraxial light.

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-03-15 DOI: 10.1364/OL.557844

Mengwen Guo, Daomu Zhao, José J Gil, Ari T Friberg, Tero Setälä, Andreas Norrman

引用次数: 0

Terahertz diffractive imaging with saturated data inpainting: publisher's note. 太赫兹衍射成像与饱和数据绘制：出版商说明。