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3D Orbital Angular Momentum Multiplexing Holography with Metasurfaces: Encryption and Dynamic Display of 3D Multi-Targets
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-23 DOI: 10.1002/lpor.202401608
Ling-Jun Kong, Furong Zhang, ShiYuan Cheng, Xiangdong Zhang
{"title":"3D Orbital Angular Momentum Multiplexing Holography with Metasurfaces: Encryption and Dynamic Display of 3D Multi-Targets","authors":"Ling-Jun Kong, Furong Zhang, ShiYuan Cheng, Xiangdong Zhang","doi":"10.1002/lpor.202401608","DOIUrl":"https://doi.org/10.1002/lpor.202401608","url":null,"abstract":"After years of development, holography has become an essential tool of modern optics for many applications. Among them, holographic encryption and dynamic display are the two most typical applications. So far, however, only 2D targets or 2D images of 3D targets can be encrypted with holographic technology. The 3D multiplexing holographic technology of 3D multi-targets has not yet been realized and holographic encryption of 3D multi-targets is still a blank. Here, the conception of 3D orbital angular momentum (OAM) multiplexing holography is proposed, and holographic encryption of 3D multi-targets is realized for the first time. This breaks the restriction that only 2D images can be encrypted in traditional holographic encryption. Furthermore, the results also show that the 3D OAM holography can be used in the dynamic display for 3D multi-targets. In the experiment, the metasurface is used for taking its high-resolution advantage in light field manipulation, and verify the feasibility of 3D OAM multiplexing holographic technology, holographic encryption of 3D multi-targets, and holographic dynamic display of 3D targets. The work creates a precedent for the 3D multiplexing holography, encryption, and dynamic display technology of 3D multi-targets, which brings real 3D life closer to humankind.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"92 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874163","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}
引用次数: 0
QCL-Based Cryogen-Free THz Optical Wireless Communication Link
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-23 DOI: 10.1002/lpor.202301082
Alessia Sorgi, Marco Meucci, Muhammad A. Umair, Francesco Cappelli, Guido Toci, Paolo De Natale, Leonardo Viti, Andrea C. Ferrari, Miriam S. Vitiello, Luigi Consolino, Jacopo Catani
{"title":"QCL-Based Cryogen-Free THz Optical Wireless Communication Link","authors":"Alessia Sorgi, Marco Meucci, Muhammad A. Umair, Francesco Cappelli, Guido Toci, Paolo De Natale, Leonardo Viti, Andrea C. Ferrari, Miriam S. Vitiello, Luigi Consolino, Jacopo Catani","doi":"10.1002/lpor.202301082","DOIUrl":"https://doi.org/10.1002/lpor.202301082","url":null,"abstract":"The increased demand for high-speed (terabit-per-second) wireless data transmission has driven the shift of the frequency carrier from ubiquitous radio frequency systems toward the 1–5 THz range, triggering a new interest for THz quantum cascade laser (QCL)-based free-space optical (FSO) links. As compared to standard telecom-band FSO links, platforms based on THz frequency sources are inherently robust against Rayleigh scattering. Atmospheric absorption, mainly due to water vapor, limits the achievable link distance range, but at the same time, it shifts channel security on the physical layer. THz QCL-based FSO links are reported with setups requiring cryogenic cooling, seriously limiting their development for mass applications. Here, a cryogen-free, transportable THz FSO communication system is presented relying on a directly modulated 2.83 THz QCL transmitter, hosted in a closed-cycle Stirling cryocooler, and exploiting a room-temperature graphene-based receiver, implementing a binary on-off keying modulation scheme with Manchester encoding. Power-versus-distance measurements and communication tests are performed, and propose a propagation model to extrapolate the performances of the THz link in an optimized configuration. This approach reduces complexity and costs, as compared to the state-of-the-art THz FSO links, and paves the way for the deployment of optical wireless communication systems exploiting the 1–5 THz frequency range.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"5 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874166","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}
引用次数: 0
Hybrid Thin-Film Lithium Niobate Micro-Ring Acousto-Optic Modulator with Low Half-Wave-Voltage-Length Product
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-23 DOI: 10.1002/lpor.202401832
Lei Wan, Jiying Huang, Meixun Wen, Huan Li, Wenfeng Zhou, Zhiqiang Yang, Yuping Chen, Huilong Liu, Siqing Zeng, Dong Liu, Shuixian Yang, Daoxin Dai, Zhaohui Li
{"title":"Hybrid Thin-Film Lithium Niobate Micro-Ring Acousto-Optic Modulator with Low Half-Wave-Voltage-Length Product","authors":"Lei Wan, Jiying Huang, Meixun Wen, Huan Li, Wenfeng Zhou, Zhiqiang Yang, Yuping Chen, Huilong Liu, Siqing Zeng, Dong Liu, Shuixian Yang, Daoxin Dai, Zhaohui Li","doi":"10.1002/lpor.202401832","DOIUrl":"https://doi.org/10.1002/lpor.202401832","url":null,"abstract":"Highly efficient acousto-optic modulation plays a vital role in microwave-to-optical conversion. Herein, a hybrid thin-film lithium niobate (TFLN) racetrack micro-ring acousto-optic modulator (AOM) implemented with a low-loss chalcogenide (ChG) waveguide is demonstrated. By engineering the electrode configuration of the interdigital transducer, the double-arm micro-ring acousto-optic modulation is experimentally confirmed in a non-suspended ChG-loaded TFLN waveguide platform. Varying the position of the blue-detuned bias point, the half-wave-voltage-length product <i>V</i>\u0000<sub>π</sub><i>L</i> of the hybrid TFLN micro-ring AOM is as small as 9 mV cm. Accordingly, the acousto-optic coupling strength is estimated to be 0.48 Hz s<sup>1/2</sup> at an acoustic frequency of 0.84 GHz. By analyzing the generation of sideband photon number coupled out of the cavity, the ratio between the microwave photons and first-order optical sideband photons is calculated to be 2.2 × 10<sup>−7</sup>% at room temperature. Highly efficient micro-ring acousto-optic modulation thus provides new opportunities for expanding TFLN-ChG hybrid piezo-optomechanical devices applied in the low-power-consumption quantum information transduction.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"1 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874165","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}
引用次数: 0
Guided-Mode Resonance Polarization-Sensitive Narrowband InGaAs Photodetector
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-23 DOI: 10.1002/lpor.202401253
Junho Jang, Dae-Myeong Geum, Il-Suk Kang, Yeon-Wha Oh, Sanghee Jung, Huijae Cho, SangHyeon Kim
{"title":"Guided-Mode Resonance Polarization-Sensitive Narrowband InGaAs Photodetector","authors":"Junho Jang, Dae-Myeong Geum, Il-Suk Kang, Yeon-Wha Oh, Sanghee Jung, Huijae Cho, SangHyeon Kim","doi":"10.1002/lpor.202401253","DOIUrl":"https://doi.org/10.1002/lpor.202401253","url":null,"abstract":"The increasing demand for extracting comprehensive information from light through multispectral and polarization imaging has driven the development of advanced photodetection technologies. In response, a polarization-sensitive narrowband InGaAs photodetector (PD) operating in the short-wave infrared (SWIR) range is proposed, capable of capturing wavelength, intensity, and polarization data concurrently without additional optical components. The device is formed by integrating an InGaAs PD onto a silicon grating, utilizing the guided-mode resonance (GMR) effect to amplify absorption at specific target wavelengths. The intrinsic polarization dependence of the 1D GMR structure allows for distinct absorption peaks for TE and TM polarized light. The detection performance of the device, including spectral rejection ratios greater than 30, peak responsivities of 0.46 A W<sup>−1</sup>, and polarization extinction ratios of up to 41.3 is demonstrated. Precise design of the period and arrangement of the grating enables fabrication of pixel arrays with diverse detection wavelengths and polarization directions, in a single process eliminating the process complexity. This is the only capability of this study among previously reported devices.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"31 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874168","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}
引用次数: 0
Dion-Jacobson Phase Mn2+-Doped Perovskite Scintillators for High-Resolution X-Ray Imaging
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-23 DOI: 10.1002/lpor.202401674
Qingshun Fan, Haoyu Zhang, Shihai You, Yi Liu, Pengfei Zhu, Haojie Xu, Wuqian Guo, Yu Ma, Junhua Luo, Yongsheng Liu, Zhihua Sun
{"title":"Dion-Jacobson Phase Mn2+-Doped Perovskite Scintillators for High-Resolution X-Ray Imaging","authors":"Qingshun Fan, Haoyu Zhang, Shihai You, Yi Liu, Pengfei Zhu, Haojie Xu, Wuqian Guo, Yu Ma, Junhua Luo, Yongsheng Liu, Zhihua Sun","doi":"10.1002/lpor.202401674","DOIUrl":"https://doi.org/10.1002/lpor.202401674","url":null,"abstract":"X-ray imaging technology has attracted widespread attention due to its important application in the industrial and medical fields. The practical-level X-ray imager requires high-performance scintillators with high light yield, low detection limit, superb stability, and excellent processibility. Here, a Mn<sup>2+</sup>-doped 2D Dion-Jacobson perovskite scintillator of (HIS)PbCl<sub>4</sub> (HIS<sup>2+</sup> is histammonium), is presented serving as a potential candidate for high-resolution X-ray imaging. By facile solution method of Mn<sup>2+</sup>-doping, (HIS)PbCl<sub>4</sub>:2%Mn has an orange-red emission with a high photoluminescence quantum yield (PLQY) of 80.2%. Emphatically, (HIS)PbCl<sub>4</sub>:2%Mn crystals exhibit compelling scintillation performances, including a high light yield of 77 500 photons MeV<sup>−1</sup> (≈3.1 times of commercial Lu<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>:Ce<sup>3+</sup>) and low detection limits of 59.3 nGy<sub>air</sub> s<sup>−1</sup>, along with excellent irradiation and environmental stability. Besides, both centimeter-size single crystals and flexible scintillators fabricated with poly(dimethylsiloxane) hold a promise for practical X-ray imaging. The high resolution using an optimized flexible scintillator screen reaches up to 20.3 lp mm<sup>−1</sup>, far beyond the most of known scintillators. The results suggest that (HIS)PbCl<sub>4</sub>:2%Mn has great commercialization potential in the field of X-ray imaging.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"1 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874167","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}
引用次数: 0
D-Band MUTC Photodiode Module for Ultra-Wideband 160 Gbps Photonics-Assisted Fiber-THz Integrated Communication System
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-23 DOI: 10.1002/lpor.202401459
Yuxin Tian, Yaxuan Li, Bing Xiong, Junwen Zhang, Changzheng Sun, Zhibiao Hao, Jian Wang, Lai Wang, Yanjun Han, Hongtao Li, Lin Gan, Nan Chi, Yi Luo
{"title":"D-Band MUTC Photodiode Module for Ultra-Wideband 160 Gbps Photonics-Assisted Fiber-THz Integrated Communication System","authors":"Yuxin Tian, Yaxuan Li, Bing Xiong, Junwen Zhang, Changzheng Sun, Zhibiao Hao, Jian Wang, Lai Wang, Yanjun Han, Hongtao Li, Lin Gan, Nan Chi, Yi Luo","doi":"10.1002/lpor.202401459","DOIUrl":"https://doi.org/10.1002/lpor.202401459","url":null,"abstract":"Current wireless communication systems are increasingly constrained by insufficient bandwidth and limited power output, impeding the achievement of ultra-high-speed data transmission. The terahertz (THz) range offers greater bandwidth, but it also imposes higher requirements on broadband and high-power devices. In this work, a modified uni-traveling-carrier photodiode (MUTC-PD) module with WR-6 waveguide output is presented for photonics-assisted fiber-THz integrated wireless communications. Through the optimization of the epitaxial structure and high-impedance coplanar waveguide (CPW), the fabricated 6 µm-diameter MUTC-PD achieves a high output power of −0.96 dBm at 150 GHz and ultra-flat frequency response at D-band. The MUTC-PD is subsequently packaged into a compact WR-6 module, incorporating planar-circuit-based RF-choke, DC-block, and probe. The packaged PD module demonstrates high saturation power and flat frequency responses with minimal power roll-off of only ≈2 dB over 110–170 GHz. By incorporating the PD module into a fiber-THz integrated communication system, the high data rate of up to 160 Gbps with 16 quadrature amplitude modulation (QAM) is successfully secured. The demonstration verifies the potential of the PD module for ultra-broadband and ultra-high-speed THz communications, setting a foundation for future research in high-speed data transmission.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"30 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874170","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}
引用次数: 0
All-Optical Coherent Control of Ultrafast Injection Photocurrent in Multilayer Rhenium Disulfide Under Two-Color Light Excitation
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-23 DOI: 10.1002/lpor.202401043
Leidong Xing, Xueqin Cao, Fan Wang, Yayan Xi, Guorong Xu, Xinyi Xue, Yanqing Ge, Yuanyuan Huang, Xinlong Xu
{"title":"All-Optical Coherent Control of Ultrafast Injection Photocurrent in Multilayer Rhenium Disulfide Under Two-Color Light Excitation","authors":"Leidong Xing, Xueqin Cao, Fan Wang, Yayan Xi, Guorong Xu, Xinyi Xue, Yanqing Ge, Yuanyuan Huang, Xinlong Xu","doi":"10.1002/lpor.202401043","DOIUrl":"https://doi.org/10.1002/lpor.202401043","url":null,"abstract":"Quantum coherence by electronic quantum interference (QI) is significant to generate macroscopic photocurrent without heterostructures in both bulk and low-dimensional materials. However, the coherent injection photocurrent by QI in low-dimensional materials can be veiled by other linear or nonlinear optical effects. Herein, the coherent ultrafast injection photocurrent is investigated by coherent terahertz (THz) wave generation in multilayer rhenium disulfide (ReS<sub>2</sub>) at the nanometer scale under two-color light excitation. It is observed that the THz radiation can be controlled by adjusting the relative phase between the two-color lights under normal incidence. The experimental results demonstrate that the THz radiation of ReS<sub>2</sub> is ascribed to the injection photocurrent from the electronic coherence of QI effect. However, the injection photocurrent is veiled by the nonlinear polarization, shift current, and drift current under oblique incidence. A method is proposed to isolate the pure injection photocurrent from these optical responses, based on the THz amplitude dependences on the pump power, incident polarization angle, and the relative phase between the two-color lights. This work not only provides an all-optical non-contact method for understanding the quantum photocurrent in ReS<sub>2</sub> but also promotes the quantum coherent control for solid-state quantum devices.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"32 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874164","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}
引用次数: 0
A New Thermodynamic Approach to Multimode Fiber Self‐cleaning and Soliton Condensation
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-22 DOI: 10.1002/lpor.202400714
Mario Zitelli
{"title":"A New Thermodynamic Approach to Multimode Fiber Self‐cleaning and Soliton Condensation","authors":"Mario Zitelli","doi":"10.1002/lpor.202400714","DOIUrl":"https://doi.org/10.1002/lpor.202400714","url":null,"abstract":"A new thermodynamic theory for optical multimode systems is proposed. Theory is based on a weighted Bose–Einstein law, and includes the state equation, the fundamental equation for the entropy and a metric to measure the accuracy of the thermodynamic approach. The theory is used to compare the experimental results of two propagation regimes in multimode fibers, specifically the self‐cleaning in the normal chromatic dispersion region and the soliton condensation in the anomalous dispersion region. Surprising similarities are found in terms of thermodynamic parameters, suggesting a common basis for the thermalization processes observed in the two propagation regimes.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"14 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142869933","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}
引用次数: 0
Exceptional-Point-Enhanced Superior Sensing Using Asymmetric Coupled-Lossy-Resonator Based Optical Metasurface
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-20 DOI: 10.1002/lpor.202401661
Basudev Nag Chowdhury, Pooja Lahiri, Nigel P. Johnson, Richard M. De La Rue, Basudev Lahiri
{"title":"Exceptional-Point-Enhanced Superior Sensing Using Asymmetric Coupled-Lossy-Resonator Based Optical Metasurface","authors":"Basudev Nag Chowdhury, Pooja Lahiri, Nigel P. Johnson, Richard M. De La Rue, Basudev Lahiri","doi":"10.1002/lpor.202401661","DOIUrl":"https://doi.org/10.1002/lpor.202401661","url":null,"abstract":"Exotic optical responses of designed metasurfaces, including non-Hermitian photonic systems exhibiting exceptional point (EP)-singularities, offer diverse applications in the field of quantum sensing, laser technology, gravitational-wave detection as well as biomedical instrumentation for weak signal detection. However, the sensitivity enhancement of such EP-sensors is limited by quantum/thermal noises. Here we propose a novel scheme of EP-based superior photonic sensing of any molecule, using suitably designed asymmetric coupled-lossy-resonators (ACLR) with a non-Hermitian Hamiltonian. Unlike conventional approach of EP-degeneracy lifting, the perturbing Hamiltonian of the molecular-vibron, in the present method, generates an EP-singularity by coupling with the ACLR that does not exhibit EP in the unperturbed condition. Raman spectroscopic measurements performed on such systems provide significantly enhanced peaks at the vibronic modes, thereby exploring a novel method for molecule detection with superior sensitivity. Such EP-sensing is experimentally demonstrated in the current work by detecting the relevant protein-vibrons of the recombinant Omicron strain of SARS-CoV-2 with 350%-2200% enhanced Raman intensities, using an optical-metasurface consisting of an array of Au-asymmetric split-ring-resonators as the ACLRs. This work will open up a novel field of EP-based superior photonic sensing of any molecule, in general, by appropriately designing the ACLR-structures for detecting molecular-vibrons with desired enhanced sensitivity.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"104 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857906","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}
引用次数: 0
Realization of a Chiral Topological Whispering-Gallery-Mode Cavity in Gyromagnetic Photonic Crystals
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2024-12-18 DOI: 10.1002/lpor.202401451
Zhengting Wu, Ziyao Wang, Yan Meng, Jingming Chen, Xiang Xi, Perry Ping Shum, Zhen Gao
{"title":"Realization of a Chiral Topological Whispering-Gallery-Mode Cavity in Gyromagnetic Photonic Crystals","authors":"Zhengting Wu, Ziyao Wang, Yan Meng, Jingming Chen, Xiang Xi, Perry Ping Shum, Zhen Gao","doi":"10.1002/lpor.202401451","DOIUrl":"https://doi.org/10.1002/lpor.202401451","url":null,"abstract":"Photonic whispering-gallery-mode (WGM) cavities formed by total internal reflection of light around closed paths have played a central role in modern optics. Recently, extensive efforts have been devoted to achieving topologically photonic WGM cavities that are robust against defects or obstacles. However, previous experimental studies on topological photonic WGM cavities are limited to systems with time-reversal symmetry (TRS) and weak topological protection due to the existence of backscattering channels. Here, the study reports the experimental realization of a chiral topological WGM cavity in a gyromagnetic photonic crystal with broken TRS. Using microwave near-field measurements, it is directly observed that the chiral topological WGM cavities are inherently nonreciprocal and exhibit superior robustness against various obstacles with strong topological protection owing to the absence of backscattering channels. More interestingly, it is demonstrated that the resonance frequencies and free spectral range (FSR) of the chiral topological WGM cavities can be tailored by adjusting the insertion length of a metallic scatterer. The work extends the research realm of topological photonic WGM cavities and may find important applications in designing arbitrary-shaped and nonreciprocal topological photonic cavities, filters, lasers, and frequency combs.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"48 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841785","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}
引用次数: 0
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