Peng Zhou, Kangkang Guo, Qinglin Ji, Xinyu Wen, Chang Guo, Honghua Zheng, Rongrong Guo, Lei Chen, Han Ye, Yumin Liu, Shikai Deng
{"title":"Full‐Stokes Polarization Bifocal Plane Metasurface with Bright‐Field and Edge‐Enhanced Imaging","authors":"Peng Zhou, Kangkang Guo, Qinglin Ji, Xinyu Wen, Chang Guo, Honghua Zheng, Rongrong Guo, Lei Chen, Han Ye, Yumin Liu, Shikai Deng","doi":"10.1002/lpor.202500922","DOIUrl":"https://doi.org/10.1002/lpor.202500922","url":null,"abstract":"Edge‐enhanced imaging and polarization detection are critical for computer vision and biomedicine by enabling geometric feature extraction and object characterization. Conventional implementations, however, rely on bulky optics and complex systems, hindering miniaturization and integration. This work reports that a sub‐micrometer‐thick metasurface can simultaneously achieve bifocal bright‐field/edge‐enhanced imaging and polarization detection. The design incorporates a spiral phase to modulate the spectrum plane, while a lens phase performs an inverse Fourier transform on the spectrum plane to achieve edge‐enhanced imaging. Meanwhile, through strategically arranging three polarization multiplexing units, full Stokes polarization parameters are captured in single‐shot imaging. This sub‐micrometer multifunctional metasurface eliminates complex optics and post‐processing, paving the way for compact and integrated optical systems.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"9 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145035386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Mingxin Hu, Chao Liu, Jie Wang, Suheng Zhang, Jiahua Tao, Lin Yang, Yingnan Guo, Zhiqiang Li, Junhao Chu
{"title":"Te0.75Se0.25/Si/AZO Dual‐Heterostructure Photodetector for Spectral Selective Imaging and Secure Optical Communication","authors":"Mingxin Hu, Chao Liu, Jie Wang, Suheng Zhang, Jiahua Tao, Lin Yang, Yingnan Guo, Zhiqiang Li, Junhao Chu","doi":"10.1002/lpor.202501126","DOIUrl":"https://doi.org/10.1002/lpor.202501126","url":null,"abstract":"Multispectral photodetectors (PDs) enable simultaneous photon detection across distinct bands, unlocking advanced capabilities such as precision object identification, autonomous navigation, and secure optical communication through spectral‐specific signal discrimination. However, the integration of multiple spectral detection functionalities into a single device architecture remains a challenge. Here, a two‐terminal, vertically stacked dual‐heterostructure (DH) photodetector composed of a Te<jats:sub>0.75</jats:sub>Se<jats:sub>0.25</jats:sub>/Si/AZO (P‐N‐N<jats:sup>+</jats:sup>) configuration that achieves broadband spectral detection (300–1750 nm) under zero‐bias operation while exhibiting a tunable bipolar photoresponse is presented. The device demonstrates high‐performance metrics, including a specific detectivity exceeding 10<jats:sup>11</jats:sup> Jones, a −3 dB cutoff frequency of 280 kHz, and an ultrafast response time of 726 ns under 1550 nm illumination. The selective detection of visible (VIS) and short‐wave infrared (SWIR) spectra is effectively adjusted by varying the applied bias voltage. Capitalizing on these rapid response and bipolar characteristics, this PD facilitates pixel‐level imaging and secure optical communication with encryption capability. Furthermore, a scanning imaging system that operates without the removal of an infrared cut‐filter, achieving high‐quality image recognition with a grayscale resolution beyond a 9‐level grayscale is demonstrated. This work provides a promising strategy for developing bias‐switchable, multimodal photodetectors with diverse applications in advanced imaging and communication technologies.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"62 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145035328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}
Shunben Wu, Xinhao Wang, Xingqi Zhao, Lixi Rao, Wenzhe Liu, Jiajun Wang, Lei Shi, Jian Zi
{"title":"Polarization Steering Light Beam Shifts via a High‐Efficiency Photonic Crystal Slab","authors":"Shunben Wu, Xinhao Wang, Xingqi Zhao, Lixi Rao, Wenzhe Liu, Jiajun Wang, Lei Shi, Jian Zi","doi":"10.1002/lpor.202500913","DOIUrl":"https://doi.org/10.1002/lpor.202500913","url":null,"abstract":"The manipulation of light fields using micro/nano photonic structures has become a pivotal area in modern optics, enabling precise control over light propagation and interaction at subwavelength scales. This study demonstrates a high‐efficiency method for steering light beam displacement at optical interfaces through polarization control using a reflective photonic crystal (PhC) slab. The reflective PhC slab enhances cross‐polarization efficiency by reducing scattering channels, facilitating clear observation of beam shifts without the need for additional polarization analysis. By varying the polarization state of incident light, continuous magnitude and direction control over the beam shift at the PhC slab are achieved. In practical experiments, a maximum cross‐polarized efficiency over 74 and the tunable displacement range reaching up to 14 wavelengths at 780 nm are realized. This work proposes an effective approach to realizing controllable beam displacement, while also inspiring future developments in precise and efficient beam steering through photonic band and polarization engineering.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"31 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145035332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}