Li Ma, Chi Feng, Liang Pan, Bo Zhang, Hongyuan Zheng, Xin Xu, Artur Movsesyan, Chengyi Zhang, Taiping Zhang, Yidong Hou, Cheng Zhi Huang, Xiang Lan, Alexander O. Govorov, Zhiming Wang
Spatial chirality programming in plasmonic nanostructures is essential to overcome fundamental limitations of conventional chiral photonics, yet persistent symmetry constraints intrinsically restrict programmable chiroptical control. Here, we employ DNA origami to construct hybrid plasmonic systems integrating gold nanocubes (NCs) or nanospheres (NSs) with nanorods (NRs). We demonstrate that NC‐NR hybrids exhibit robust, angle‐tunable ( θ ) 3D circular dichroism (3D‐CD) responses featuring reversible sign inversion, whereas geometrically isotropic NS‐NR counterparts show negligible chirality. This chiral mechanism arises from wavelength‐dependent phase reversal and incident‐direction‐encoded coupling of plasmon modes, where the longitudinal and transverse modes of the nanorods hybridize with multiple nanocube modes, collectively governing the dual‐band (680 and 540 nm) 3D‐CD responses. This work establishes and validates a programmable platform for spatial chiroptical engineering.
{"title":"Exploring the Chiroptical Engineering in Free Space Encoded with DNA‐Assembled Plasmonic Hybrids of Isotropic/Anisotropic Objects","authors":"Li Ma, Chi Feng, Liang Pan, Bo Zhang, Hongyuan Zheng, Xin Xu, Artur Movsesyan, Chengyi Zhang, Taiping Zhang, Yidong Hou, Cheng Zhi Huang, Xiang Lan, Alexander O. Govorov, Zhiming Wang","doi":"10.1002/lpor.202502002","DOIUrl":"https://doi.org/10.1002/lpor.202502002","url":null,"abstract":"Spatial chirality programming in plasmonic nanostructures is essential to overcome fundamental limitations of conventional chiral photonics, yet persistent symmetry constraints intrinsically restrict programmable chiroptical control. Here, we employ DNA origami to construct hybrid plasmonic systems integrating gold nanocubes (NCs) or nanospheres (NSs) with nanorods (NRs). We demonstrate that NC‐NR hybrids exhibit robust, angle‐tunable ( <jats:italic>θ</jats:italic> ) 3D circular dichroism (3D‐CD) responses featuring reversible sign inversion, whereas geometrically isotropic NS‐NR counterparts show negligible chirality. This chiral mechanism arises from wavelength‐dependent phase reversal and incident‐direction‐encoded coupling of plasmon modes, where the longitudinal and transverse modes of the nanorods hybridize with multiple nanocube modes, collectively governing the dual‐band (680 and 540 nm) 3D‐CD responses. This work establishes and validates a programmable platform for spatial chiroptical engineering.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"54 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145535915","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}
Jingni Geng, Srinivasa Rao Allam, Quan Sheng, Takashige Omatsu
In this work, we detail a novel approach which can be used for the generation of optical quasiparticles. This process leverages both spin‐orbit conversion control with wavelength de‐tuning in a commercially available q ‐plate. We demonstrate the generation of both 1st and 2nd order optical quasiparticles with skyrmion numbers of ∼0.9 and ∼1.9. This approach provides not only a new strategy for the generation of robust optical quasiparticles, but also a new means of utilizing q ‐plates. We anticipate that this approach to generating optical quasiparticles will facilitate rapid advances in topological optics and materials science based on exotic light–matter interactions, quantum and optical communications, high density optical data storage, and nano‐scale polarization imaging.
{"title":"Generation of Optical Quasiparticles with Spin–Orbit Conversion in a Single Q ‐Plate","authors":"Jingni Geng, Srinivasa Rao Allam, Quan Sheng, Takashige Omatsu","doi":"10.1002/lpor.202502439","DOIUrl":"https://doi.org/10.1002/lpor.202502439","url":null,"abstract":"In this work, we detail a novel approach which can be used for the generation of optical quasiparticles. This process leverages both spin‐orbit conversion control with wavelength de‐tuning in a commercially available <jats:italic>q</jats:italic> ‐plate. We demonstrate the generation of both 1st and 2nd order optical quasiparticles with skyrmion numbers of ∼0.9 and ∼1.9. This approach provides not only a new strategy for the generation of robust optical quasiparticles, but also a new means of utilizing <jats:italic>q</jats:italic> ‐plates. We anticipate that this approach to generating optical quasiparticles will facilitate rapid advances in topological optics and materials science based on exotic light–matter interactions, quantum and optical communications, high density optical data storage, and nano‐scale polarization imaging.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"32 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145535916","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}
Self‐powered polarization‐sensitive photodetection is crucial for next‐generation low‐power optoelectronic systems. Yet, the development of such devices has been hindered by the scarcity of suitable materials combining intrinsic in‐plane anisotropy with efficient zero‐bias photoresponse. Here, we report the first comprehensive investigation of the in‐plane anisotropic properties of Bi 4 O 4 SeCl 2 , a van der Waals material exhibiting pronounced 2D anisotropy that has remained unexplored until now. Through physical vapor transport growth, we obtained high‐quality Bi 4 O 4 SeCl 2 single crystals featuring a quasi‐tetragonal layered structure with strong in‐plane electronic and optical anisotropy. Photodetectors fabricated from mechanically exfoliated Bi 4 O 4 SeCl 2 flakes exhibit broadband responsivity from the visible to near‐infrared range (532–1064 nm), self‐powered operation at zero bias, and rapid response times (∼0.47/0.49 s). Spatially resolved scanning photocurrent microscopy and photovoltage mapping confirm that the dominant photoresponse arises from the photothermoelectric effect. Notably, the device exhibits exceptional polarization sensitivity, achieving polarization ratios of 1.93 and 1.76 at wavelengths of 671 and 1064 nm, surpassing the performance of most previously reported zero‐bias near‐infrared photodetectors. Angle‐resolved polarized Raman spectroscopy reveals a distinct fourfold rotational symmetry, further confirming the strong in‐plane anisotropy. These findings establish Bi 4 O 4 SeCl 2 as a multifunctional layered material with significant potential for next‐generation, low‐power, polarization‐resolved photodetectors.
{"title":"Self‐Powered Polarization‐Sensitive Near‐Infrared Photodetection Based on 2D Bi 4 O 4 SeCl 2","authors":"Zhiyao Zhang, Weina Zhao, Hao Yu, Yichen Xu, Songsong Tang, Peng Yu, Zuyong Feng, Jian Zhou","doi":"10.1002/lpor.202502324","DOIUrl":"https://doi.org/10.1002/lpor.202502324","url":null,"abstract":"Self‐powered polarization‐sensitive photodetection is crucial for next‐generation low‐power optoelectronic systems. Yet, the development of such devices has been hindered by the scarcity of suitable materials combining intrinsic in‐plane anisotropy with efficient zero‐bias photoresponse. Here, we report the first comprehensive investigation of the in‐plane anisotropic properties of Bi <jats:sub>4</jats:sub> O <jats:sub>4</jats:sub> SeCl <jats:sub>2</jats:sub> , a van der Waals material exhibiting pronounced 2D anisotropy that has remained unexplored until now. Through physical vapor transport growth, we obtained high‐quality Bi <jats:sub>4</jats:sub> O <jats:sub>4</jats:sub> SeCl <jats:sub>2</jats:sub> single crystals featuring a quasi‐tetragonal layered structure with strong in‐plane electronic and optical anisotropy. Photodetectors fabricated from mechanically exfoliated Bi <jats:sub>4</jats:sub> O <jats:sub>4</jats:sub> SeCl <jats:sub>2</jats:sub> flakes exhibit broadband responsivity from the visible to near‐infrared range (532–1064 nm), self‐powered operation at zero bias, and rapid response times (∼0.47/0.49 s). Spatially resolved scanning photocurrent microscopy and photovoltage mapping confirm that the dominant photoresponse arises from the photothermoelectric effect. Notably, the device exhibits exceptional polarization sensitivity, achieving polarization ratios of 1.93 and 1.76 at wavelengths of 671 and 1064 nm, surpassing the performance of most previously reported zero‐bias near‐infrared photodetectors. Angle‐resolved polarized Raman spectroscopy reveals a distinct fourfold rotational symmetry, further confirming the strong in‐plane anisotropy. These findings establish Bi <jats:sub>4</jats:sub> O <jats:sub>4</jats:sub> SeCl <jats:sub>2</jats:sub> as a multifunctional layered material with significant potential for next‐generation, low‐power, polarization‐resolved photodetectors.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"5 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145535914","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}
While considerable effort has been dedicated to enhancing the quality factor (Q-factor) of resonances to improve second-harmonic generation (SHG) in metasurfaces, the role of the mode overlap factor (<span data-altimg="/cms/asset/b43adcf2-5431-48c8-a42b-29ad8b88532e/lpor70568-math-0001.png"></span><mjx-container ctxtmenu_counter="12" ctxtmenu_oldtabindex="1" jax="CHTML" role="application" sre-explorer- style="font-size: 103%; position: relative;" tabindex="0"><mjx-math aria-hidden="true" location="graphic/lpor70568-math-0001.png"><mjx-semantics><mjx-mi data-semantic-annotation="clearspeak:simple" data-semantic-font="italic" data-semantic- data-semantic-role="greekletter" data-semantic-speech="beta" data-semantic-type="identifier"><mjx-c></mjx-c></mjx-mi></mjx-semantics></mjx-math><mjx-assistive-mml display="inline" unselectable="on"><math altimg="urn:x-wiley:18638880:media:lpor70568:lpor70568-math-0001" display="inline" location="graphic/lpor70568-math-0001.png" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi data-semantic-="" data-semantic-annotation="clearspeak:simple" data-semantic-font="italic" data-semantic-role="greekletter" data-semantic-speech="beta" data-semantic-type="identifier">β</mi>$beta$</annotation></semantics></math></mjx-assistive-mml></mjx-container>) has lacked systematic and experimentally investigation. In this study, we investigate the influence of <span data-altimg="/cms/asset/1e73b48d-c51e-4c9e-865b-c53f9884b673/lpor70568-math-0002.png"></span><mjx-container ctxtmenu_counter="13" ctxtmenu_oldtabindex="1" jax="CHTML" role="application" sre-explorer- style="font-size: 103%; position: relative;" tabindex="0"><mjx-math aria-hidden="true" location="graphic/lpor70568-math-0002.png"><mjx-semantics><mjx-mi data-semantic-annotation="clearspeak:simple" data-semantic-font="italic" data-semantic- data-semantic-role="greekletter" data-semantic-speech="beta" data-semantic-type="identifier"><mjx-c></mjx-c></mjx-mi></mjx-semantics></mjx-math><mjx-assistive-mml display="inline" unselectable="on"><math altimg="urn:x-wiley:18638880:media:lpor70568:lpor70568-math-0002" display="inline" location="graphic/lpor70568-math-0002.png" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi data-semantic-="" data-semantic-annotation="clearspeak:simple" data-semantic-font="italic" data-semantic-role="greekletter" data-semantic-speech="beta" data-semantic-type="identifier">β</mi>$beta$</annotation></semantics></math></mjx-assistive-mml></mjx-container> on SHG efficiency through numerical simulations and experimental validation under well-controlled Q-factor conditions. To isolate and demonstrate the role of <span data-altimg="/cms/asset/2af7c461-bda5-45e3-ba34-a3fb91498064/lpor70568-math-0003.png"></span><mjx-container ctxtmenu_counter="14" ctxtmenu_oldtabindex="1" jax="CHTML" role="application" sre-explorer- style="font-size: 103%; position: relative;" tabindex="0"><mjx-math aria-hidden="true" location="graphic/lpor70568-math-0003.png"><m
Mixed-dimensional van der Waals heterostructures comprising 2D transition metal dichalcogenides (TMDs) and 3D semiconductors show great promise for short-wave infrared (SWIR) photodetection. In this study, breaking through the limitations of traditional thin-film transfer processes, the in situ fabrication of WSe<sub>2</sub>/W/Ge back-to-back dual Schottky heterojunctions on Ge substrates is successfully achieved via a W passivation barrier-assisted in situ selenization technique, which effectively suppresses the formation of GeSe by-products. An 8 × 8 photodetector array is fabricated, exhibiting significant photoresponse in the broad spectral range of 532–2200 nm. Specifically, the responsivity (<span data-altimg="/cms/asset/a8de8f35-bb3e-45e2-b0c5-660690f6cc54/lpor70597-math-0001.png"></span><mjx-container ctxtmenu_counter="3" ctxtmenu_oldtabindex="1" jax="CHTML" role="application" sre-explorer- style="font-size: 103%; position: relative;" tabindex="0"><mjx-math aria-hidden="true" location="graphic/lpor70597-math-0001.png"><mjx-semantics><mjx-mi data-semantic-annotation="clearspeak:simple" data-semantic-font="italic" data-semantic- data-semantic-role="latinletter" data-semantic-speech="upper R" data-semantic-type="identifier"><mjx-c></mjx-c></mjx-mi></mjx-semantics></mjx-math><mjx-assistive-mml display="inline" unselectable="on"><math altimg="urn:x-wiley:18638880:media:lpor70597:lpor70597-math-0001" display="inline" location="graphic/lpor70597-math-0001.png" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi data-semantic-="" data-semantic-annotation="clearspeak:simple" data-semantic-font="italic" data-semantic-role="latinletter" data-semantic-speech="upper R" data-semantic-type="identifier">R</mi>$R$</annotation></semantics></math></mjx-assistive-mml></mjx-container>) and specific detectivity (<span data-altimg="/cms/asset/88f0b9f2-0b3b-4bbc-93b1-76a20d4ecfd6/lpor70597-math-0002.png"></span><mjx-container ctxtmenu_counter="4" ctxtmenu_oldtabindex="1" jax="CHTML" role="application" sre-explorer- style="font-size: 103%; position: relative;" tabindex="0"><mjx-math aria-hidden="true" location="graphic/lpor70597-math-0002.png"><mjx-semantics><mjx-msup data-semantic-children="0,1" data-semantic- data-semantic-role="latinletter" data-semantic-speech="upper D Superscript asterisk" data-semantic-type="superscript"><mjx-mi data-semantic-annotation="clearspeak:simple" data-semantic-font="italic" data-semantic- data-semantic-parent="2" data-semantic-role="latinletter" data-semantic-type="identifier"><mjx-c></mjx-c></mjx-mi><mjx-script style="vertical-align: 0.363em;"><mjx-mo data-semantic- data-semantic-parent="2" data-semantic-role="multiplication" data-semantic-type="operator" size="s"><mjx-c></mjx-c></mjx-mo></mjx-script></mjx-msup></mjx-semantics></mjx-math><mjx-assistive-mml display="inline" unselectable="on"><math altimg="urn:x-wiley:18638880:media:lpor70597:lpor70597-math-0002" display="inline" location="graphic/lpor70597-math-0002.png" xml
Jie Wang, Jin Chen, Feilong Yu, Rongsheng Chen, Jiuxu Wang, Cheng Guo, Huaizhong Xing, Xiaoshuang Chen, Wei Lu, Guanhai Li
Polarization offers a rich yet underexploited dimension for encoding optical information. However, conventional metasurfaces—constrained by intrinsic symmetry—fail to decouple circular polarization channels, fundamentally limiting the capacity of polarization-multiplexed systems. Here, we present a dual-layer dielectric metasurface that breaks this spin locking through engineered interlayer diffraction coupling, enabling complete and independent control of the Jones matrix, including modulation along the elusive S3 axis of the Poincaré sphere. Leveraging a neural-network-assisted inverse design framework, we co-optimize local meta-atom responses and global wavefront evolution. We demonstrate a six-channel polarization-multiplexed hologram with ∼30 dB signal-to-noise ratio (SNR), and further realize full circular polarization multiplexing (L-L, L-R, R-L, R-R) with SNRs above 21 dB. This platform unlocks full-Poincaré polarization control in a CMOS-compatible form, paving the way for high-capacity holography, secure optical communication, and multidimensional photonic systems.
{"title":"Breaking Spin Locking for Full Circular Polarization Decoupling in a Dual-Layer Metasurface","authors":"Jie Wang, Jin Chen, Feilong Yu, Rongsheng Chen, Jiuxu Wang, Cheng Guo, Huaizhong Xing, Xiaoshuang Chen, Wei Lu, Guanhai Li","doi":"10.1002/lpor.202502325","DOIUrl":"https://doi.org/10.1002/lpor.202502325","url":null,"abstract":"Polarization offers a rich yet underexploited dimension for encoding optical information. However, conventional metasurfaces—constrained by intrinsic symmetry—fail to decouple circular polarization channels, fundamentally limiting the capacity of polarization-multiplexed systems. Here, we present a dual-layer dielectric metasurface that breaks this spin locking through engineered interlayer diffraction coupling, enabling complete and independent control of the Jones matrix, including modulation along the elusive S<sub>3</sub> axis of the Poincaré sphere. Leveraging a neural-network-assisted inverse design framework, we co-optimize local meta-atom responses and global wavefront evolution. We demonstrate a six-channel polarization-multiplexed hologram with ∼30 dB signal-to-noise ratio (SNR), and further realize full circular polarization multiplexing (L-L, L-R, R-L, R-R) with SNRs above 21 dB. This platform unlocks full-Poincaré polarization control in a CMOS-compatible form, paving the way for high-capacity holography, secure optical communication, and multidimensional photonic systems.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"28 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145531878","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}
Zhijia Hu, Lulu Guo, Guangyin Qu, Xiaojuan Zhang, Siqi Li, Yan Kuai, Weiwei Fu, Jiangang Gao, Feng Xu, Yu Liu, Anderson S. L. Gomes, Benli Yu
In the era of advancing mobile and wearable technologies, the evolution of lasers toward flexible deformation is becoming increasingly prominent. This study develops a novel, flexible, and stretchable cholesteric liquid crystal elastomer (CLCE) laser device. This innovative device demonstrates a unique ability to undergo rapid, progressive, and reversible color changes due to force-induced reactions. Stretch switchable (random or bandgap lasing) and stretch wavelength tunable (560–625 nm) lasers are obtained by introducing the laser dye PM597 into the CLCE. To further extend the control spectrum of laser output wavelengths in flexible systems, this research introduces two laser dyes, namely donor dye PM597 and acceptor dye NB, validating the feasibility of a stretch-dependent Förster resonance energy transfer flexible laser. By manipulating the stretching force to drive the movement of the CLCE bandgap, our flexible laser device dynamically shifts its lasing output from 560 to 750 nm. Leveraging the CLCE's exceptional mechano-chromic and mechanical properties, a visual interactive device for real-time monitoring of human joint movements is designed. This flexible CLCE, as an elastic functional soft material, holds significant promise for applications in smart wearables, soft robotics, and human-machine interfaces.
{"title":"Stretch-Tunable Liquid Crystal Elastomer Lasers for Visual Motion Sensing","authors":"Zhijia Hu, Lulu Guo, Guangyin Qu, Xiaojuan Zhang, Siqi Li, Yan Kuai, Weiwei Fu, Jiangang Gao, Feng Xu, Yu Liu, Anderson S. L. Gomes, Benli Yu","doi":"10.1002/lpor.202501891","DOIUrl":"https://doi.org/10.1002/lpor.202501891","url":null,"abstract":"In the era of advancing mobile and wearable technologies, the evolution of lasers toward flexible deformation is becoming increasingly prominent. This study develops a novel, flexible, and stretchable cholesteric liquid crystal elastomer (CLCE) laser device. This innovative device demonstrates a unique ability to undergo rapid, progressive, and reversible color changes due to force-induced reactions. Stretch switchable (random or bandgap lasing) and stretch wavelength tunable (560–625 nm) lasers are obtained by introducing the laser dye PM597 into the CLCE. To further extend the control spectrum of laser output wavelengths in flexible systems, this research introduces two laser dyes, namely donor dye PM597 and acceptor dye NB, validating the feasibility of a stretch-dependent Förster resonance energy transfer flexible laser. By manipulating the stretching force to drive the movement of the CLCE bandgap, our flexible laser device dynamically shifts its lasing output from 560 to 750 nm. Leveraging the CLCE's exceptional mechano-chromic and mechanical properties, a visual interactive device for real-time monitoring of human joint movements is designed. This flexible CLCE, as an elastic functional soft material, holds significant promise for applications in smart wearables, soft robotics, and human-machine interfaces.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"7 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145531879","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}
The optical properties of anisotropic nanoparticles (NPs) are often characterized by two principal components of their polarizability tensor. However, measuring them can be demanding as the phase of the scattered field needs to be detected. To address this challenge, I reveal a novel observable, the polarizability vector <span data-altimg="/cms/asset/c23e2bd6-42ab-416f-8c6b-f60d559b3052/lpor70545-math-0001.png"></span><mjx-container ctxtmenu_counter="405" ctxtmenu_oldtabindex="1" jax="CHTML" role="application" sre-explorer- style="font-size: 103%; position: relative;" tabindex="0"><mjx-math aria-hidden="true" location="graphic/lpor70545-math-0001.png"><mjx-semantics><mjx-mi data-semantic-annotation="clearspeak:simple" data-semantic-font="script" data-semantic- data-semantic-role="latinletter" data-semantic-speech="script upper P" data-semantic-type="identifier"><mjx-c></mjx-c></mjx-mi></mjx-semantics></mjx-math><mjx-assistive-mml display="inline" unselectable="on"><math altimg="urn:x-wiley:18638880:media:lpor70545:lpor70545-math-0001" display="inline" location="graphic/lpor70545-math-0001.png" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi data-semantic-="" data-semantic-annotation="clearspeak:simple" data-semantic-font="script" data-semantic-role="latinletter" data-semantic-speech="script upper P" data-semantic-type="identifier" mathvariant="script">P</mi>$pmb {mathcal {P}}$</annotation></semantics></math></mjx-assistive-mml></mjx-container>, for characterizing the optical response of anisotropic NPs from a single-angle Stokes vector measurement. As I show, knowledge of <span data-altimg="/cms/asset/e3e92dff-8f32-4e97-b8df-ad94ff54fc39/lpor70545-math-0002.png"></span><mjx-container ctxtmenu_counter="406" ctxtmenu_oldtabindex="1" jax="CHTML" role="application" sre-explorer- style="font-size: 103%; position: relative;" tabindex="0"><mjx-math aria-hidden="true" location="graphic/lpor70545-math-0002.png"><mjx-semantics><mjx-mi data-semantic-annotation="clearspeak:simple" data-semantic-font="script" data-semantic- data-semantic-role="latinletter" data-semantic-speech="script upper P" data-semantic-type="identifier"><mjx-c></mjx-c></mjx-mi></mjx-semantics></mjx-math><mjx-assistive-mml display="inline" unselectable="on"><math altimg="urn:x-wiley:18638880:media:lpor70545:lpor70545-math-0002" display="inline" location="graphic/lpor70545-math-0002.png" xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mi data-semantic-="" data-semantic-annotation="clearspeak:simple" data-semantic-font="script" data-semantic-role="latinletter" data-semantic-speech="script upper P" data-semantic-type="identifier" mathvariant="script">P</mi>$pmb {mathcal {P}}$</annotation></semantics></math></mjx-assistive-mml></mjx-container> grants access to pivotal nanophotonics quantities, including the scattering cross-section, optical recoil torque, and near-field amplitude. I further generalize the approach to randomly dispersed NPs, showing that <span data-altimg="/cm
{"title":"The Polarizability Vector: A Polarimetric Observable for Characterizing Anisotropic Nanoparticles","authors":"Jorge Olmos-Trigo","doi":"10.1002/lpor.202501632","DOIUrl":"https://doi.org/10.1002/lpor.202501632","url":null,"abstract":"The optical properties of anisotropic nanoparticles (NPs) are often characterized by two principal components of their polarizability tensor. However, measuring them can be demanding as the phase of the scattered field needs to be detected. To address this challenge, I reveal a novel observable, the polarizability vector <span data-altimg=\"/cms/asset/c23e2bd6-42ab-416f-8c6b-f60d559b3052/lpor70545-math-0001.png\"></span><mjx-container ctxtmenu_counter=\"405\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"><mjx-math aria-hidden=\"true\" location=\"graphic/lpor70545-math-0001.png\"><mjx-semantics><mjx-mi data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"script\" data-semantic- data-semantic-role=\"latinletter\" data-semantic-speech=\"script upper P\" data-semantic-type=\"identifier\"><mjx-c></mjx-c></mjx-mi></mjx-semantics></mjx-math><mjx-assistive-mml display=\"inline\" unselectable=\"on\"><math altimg=\"urn:x-wiley:18638880:media:lpor70545:lpor70545-math-0001\" display=\"inline\" location=\"graphic/lpor70545-math-0001.png\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><semantics><mi data-semantic-=\"\" data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"script\" data-semantic-role=\"latinletter\" data-semantic-speech=\"script upper P\" data-semantic-type=\"identifier\" mathvariant=\"script\">P</mi>$pmb {mathcal {P}}$</annotation></semantics></math></mjx-assistive-mml></mjx-container>, for characterizing the optical response of anisotropic NPs from a single-angle Stokes vector measurement. As I show, knowledge of <span data-altimg=\"/cms/asset/e3e92dff-8f32-4e97-b8df-ad94ff54fc39/lpor70545-math-0002.png\"></span><mjx-container ctxtmenu_counter=\"406\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"><mjx-math aria-hidden=\"true\" location=\"graphic/lpor70545-math-0002.png\"><mjx-semantics><mjx-mi data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"script\" data-semantic- data-semantic-role=\"latinletter\" data-semantic-speech=\"script upper P\" data-semantic-type=\"identifier\"><mjx-c></mjx-c></mjx-mi></mjx-semantics></mjx-math><mjx-assistive-mml display=\"inline\" unselectable=\"on\"><math altimg=\"urn:x-wiley:18638880:media:lpor70545:lpor70545-math-0002\" display=\"inline\" location=\"graphic/lpor70545-math-0002.png\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><semantics><mi data-semantic-=\"\" data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"script\" data-semantic-role=\"latinletter\" data-semantic-speech=\"script upper P\" data-semantic-type=\"identifier\" mathvariant=\"script\">P</mi>$pmb {mathcal {P}}$</annotation></semantics></math></mjx-assistive-mml></mjx-container> grants access to pivotal nanophotonics quantities, including the scattering cross-section, optical recoil torque, and near-field amplitude. I further generalize the approach to randomly dispersed NPs, showing that <span data-altimg=\"/cm","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"4 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145531876","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}
Yingzhi Li, Baisong Chen, Haolun Du, Ziming Wang, Heming Hu, Xuetong Li, Huan Qu, Jie Li, Weipeng Wang, Min Tao, Quanxin Na, Lei Wang, Qijie Xie, Junfeng Song
Optical wireless communication (OWC) offers promising solutions for next‐generation wireless networks. Traditional line‐of‐sight (LoS) OWC systems, relying on bulky lenses, face limitations in size and flexibility in scenarios with obstacles. Here, we first demonstrate full‐duplex line‐of‐sight (LoS) OWC employing silicon optical phased array (OPA) transceivers over a 120° field of view. The transceivers integrate dual silicon OPAs on a single chip for signal transmission and reception. The silicon OPA features on‐chip beam shaping and solid steering while maintaining a compact size. Furthermore, a non‐line‐of‐sight (NLoS) OWC system with OPA transceivers is proposed, featuring obstacle‐adaptive and signal‐regeneration transmission capabilities. The NLoS system ensures reliable 220 Gbps transmission in the presence of obstacles, and supports signal regeneration reducing the bit error rate (BER) by more than nine orders of magnitude compared to LoS link. The integration of full‐duplex and NLoS transmission accelerates the fully integrated, high‐performance OWC systems in dynamic environments.
{"title":"Integrated Optical Wireless Communication Featured With Optical Phased Array Transceivers for Full‐Duplex and NonLine‐of‐Sight Transmission","authors":"Yingzhi Li, Baisong Chen, Haolun Du, Ziming Wang, Heming Hu, Xuetong Li, Huan Qu, Jie Li, Weipeng Wang, Min Tao, Quanxin Na, Lei Wang, Qijie Xie, Junfeng Song","doi":"10.1002/lpor.202500822","DOIUrl":"https://doi.org/10.1002/lpor.202500822","url":null,"abstract":"Optical wireless communication (OWC) offers promising solutions for next‐generation wireless networks. Traditional line‐of‐sight (LoS) OWC systems, relying on bulky lenses, face limitations in size and flexibility in scenarios with obstacles. Here, we first demonstrate full‐duplex line‐of‐sight (LoS) OWC employing silicon optical phased array (OPA) transceivers over a 120° field of view. The transceivers integrate dual silicon OPAs on a single chip for signal transmission and reception. The silicon OPA features on‐chip beam shaping and solid steering while maintaining a compact size. Furthermore, a non‐line‐of‐sight (NLoS) OWC system with OPA transceivers is proposed, featuring obstacle‐adaptive and signal‐regeneration transmission capabilities. The NLoS system ensures reliable 220 Gbps transmission in the presence of obstacles, and supports signal regeneration reducing the bit error rate (BER) by more than nine orders of magnitude compared to LoS link. The integration of full‐duplex and NLoS transmission accelerates the fully integrated, high‐performance OWC systems in dynamic environments.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145532108","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}
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