ACS Photonics最新文献

Optical Janus Skyrmion 光学Janus Skyrmion

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-10 DOI: 10.1021/acsphotonics.6c02141

Zhipeng Yang,Wenyi Ji,Chenjie Zhang,Songze Li,Yuping Zhang,Huiyun Zhang,Jianping Ding,Yijie Shen

引用次数: 0

Voltage-Tunable Microhole-Structured Silicon Spectrometer 电压可调微孔结构硅光谱仪

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-10 DOI: 10.1021/acsphotonics.6c02151

Lingzhi Liu,Yuting Huang,Ruoying Kanyang,Changjia Xue,Ping Chen,Ben Tu,Qian Wang,Haojie Yao,Shijie Li,Haifeng Liang

{"title":"Voltage-Tunable Microhole-Structured Silicon Spectrometer","authors":"Lingzhi Liu,Yuting Huang,Ruoying Kanyang,Changjia Xue,Ping Chen,Ben Tu,Qian Wang,Haojie Yao,Shijie Li,Haifeng Liang","doi":"10.1021/acsphotonics.6c02151","DOIUrl":"https://doi.org/10.1021/acsphotonics.6c02151","url":null,"abstract":"The intrinsically limited spectral encoding capability of conventional silicon photodiodes remains a major challenge for developing compact and energy-efficient voltage-tunable spectrometers. Engineering silicon microstructures to produce bias-dependent spectral responsivity offers a promising route toward electrically programmable spectral encoding within a single photodetector. Here, we demonstrate a compact voltage-tunable silicon microhole computational spectrometer with electrically tunable spectral responsivity over 420–900 nm. The device provides a responsivity tuning range of 0.004–0.759 AW–1 at 870 nm, achieves a spectral resolution of 2 nm over 570–585 nm, and occupies a volume of only 730 × 730 × 300 μm3. Numerical simulations reveal that the microhole structure enhances the spatial overlap between photocarrier generation and regions of strong electrostatic field through the synergistic interplay of optical field enhancement and electrostatic field modulation, thereby enhancing bias-dependent responsivity. Furthermore, computational reconstruction of spectra from the CAVE and TokyoTech datasets yields spectral fidelities exceeding 95% and 88%, respectively, while experimental reconstruction of a broadband light source further validates the device’s capability for broadband spectral recovery. This work highlights the promise of electrically tunable silicon photodetector-based computational spectrometers for low-cost, low-power, readily integrable, and highly compact spectral sensing.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374632","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

Afterglow-Mediated UV-to-Visible Temporal Preprocessing with Hybrid Optoelectronic Synaptic Transistor Readout for Neuromorphic Recognition 余辉介导的紫外-可见时间预处理与混合光电突触晶体管读出用于神经形态识别

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-10 DOI: 10.1021/acsphotonics.6c01714

Chunyan Shi,Wenjie Lu,Qian Yang,Huipeng Chen

{"title":"Afterglow-Mediated UV-to-Visible Temporal Preprocessing with Hybrid Optoelectronic Synaptic Transistor Readout for Neuromorphic Recognition","authors":"Chunyan Shi,Wenjie Lu,Qian Yang,Huipeng Chen","doi":"10.1021/acsphotonics.6c01714","DOIUrl":"https://doi.org/10.1021/acsphotonics.6c01714","url":null,"abstract":"Ultraviolet signals in practical sensing scenarios often appear as weak perturbations, short pulses, intermittent exposures, or noisy spatial patterns. Conventional instantaneous readout can detect UV inputs at a given moment, but is limited in retaining the exposure history and filtering temporally uncorrelated noise. Here, we propose an afterglow-mediated UV-to-visible-to-current neuromorphic sensing strategy that integrates optical temporal preprocessing with a hybrid optoelectronic synaptic transistor readout. A SrAl2O4:Eu2+, Dy3+ long-afterglow layer embedded in a polydimethylsiloxane matrix was used to construct an all-optical afterglow synaptic unit. Under 365 nm UV excitation, the device produces a persistent green afterglow centered at approximately 515 nm and exhibits synapse-like temporal decay and pulse-dependent accumulation. Transient or intermittent UV inputs are thereby converted into green exposure-memory maps containing spatial and temporal information. The CdSe/ZnS quantum dot/PDVT-10 hybrid optoelectronic synaptic transistor was further fabricated to read out the wavelength-matched afterglow signal. Under 515 nm modulation, the transistor converts the afterglow into tunable synaptic current states with optical potentiation and electrical depression. On the basis of the extracted afterglow dynamics and calibrated optoelectronic response, a device-informed artificial neural network model was constructed. Compared with direct recognition of instantaneous UV patterns, the afterglow-preprocessed route improves the recognition accuracy from 76.5% to 97.0% and maintains higher robustness under increased noise density and varied UV pulse numbers. This work provides an interpretable material-device system route for nonvisible-light neuromorphic sensing.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"69 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374704","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

Copper-Driven Engineering of Hot Carrier Extraction in Double Perovskites for Enhanced Radiation Detection Performance 双钙钛矿热载流子萃取铜驱动工程增强辐射探测性能

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-10 DOI: 10.1021/acsphotonics.6c01979

Naveen Kumar Tailor,Joydip Ghosh,Saeedah Alanazi,Shivani Choudhary,Jayana Jayarathne,Saurabh K Saini,Rajiv Kumar Singh,Paul Sellin,Soumitra Satapathi

{"title":"Copper-Driven Engineering of Hot Carrier Extraction in Double Perovskites for Enhanced Radiation Detection Performance","authors":"Naveen Kumar Tailor,Joydip Ghosh,Saeedah Alanazi,Shivani Choudhary,Jayana Jayarathne,Saurabh K Saini,Rajiv Kumar Singh,Paul Sellin,Soumitra Satapathi","doi":"10.1021/acsphotonics.6c01979","DOIUrl":"https://doi.org/10.1021/acsphotonics.6c01979","url":null,"abstract":"Achieving a low limit of detection (LoD) and high sensitivity in lead-free X-ray detectors is critical for advancing their commercial viability. Doping strategies, widely used in conventional semiconductors, offer a promising approach to tailor material properties in halide perovskites. In this study, we systematically explore the impact of copper (Cu) doping on the radiation detection properties of lead-free double perovskite Cs2AgBiCl6 single crystals. An optimal Cu concentration of 1.3 wt % was identified, which markedly enhances X-ray detection performance. Cu incorporation introduces sub-bandgap states, leading to improved hot carrier extraction and suppressed radiative recombination, thereby facilitating more efficient charge carrier transport and enhancing overall detector sensitivity. The optimized Cu-doped Cs2AgBiCl6 single crystals demonstrated an ultralow LoD of 33 nGyair s–1 and improved sensitivity, attributed to enhanced hot carrier extraction and suppressed recombination, as confirmed by transient absorption spectroscopy. Additionally, the Cu-doped crystals were exposed to α particle radiation to evaluate their suitability for pulse-mode operation, indicating their potential for multifunctional radiation detection. This work offers a viable pathway for designing highly sensitive, lead-free radiation detectors suitable for commercial deployment.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"23 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374664","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

Nonlinear Optical Signatures of Collective Vibronic Correlations in NV– Centers NV -中心集体振动相关的非线性光学特征

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-10 DOI: 10.1021/acsphotonics.6c02244

Yinxiu Xue,Onur Kurt,Ying Wang,Jian Shi,You Zhou,Yuhang Ren

引用次数: 0

Tunable Optical-to-THz Frequency Conversion Driven by Localized Surface Phonon Polaritons in LiNbO3 Metasurfaces LiNbO3超表面中局部声子极化子驱动的可调谐光-太赫兹频率转换

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-07 DOI: 10.1021/acsphotonics.6c01470

C. McDonnell,M. Ferrera,F. Moia,V. Sajeev,M. Finazzi,A. Toma,C. De Angelis,M. Celebrano,T. Ellenbogen,L. Carletti

引用次数: 0

Photonic-Crystal Microresonator Frequency Combs in the O-Band o波段光子晶体微谐振器频率梳

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-06 DOI: 10.1021/acsphotonics.6c01778

Sarang Yeola,Alexa R. Carollo,Jizhao Zang,Scott B. Papp

{"title":"Photonic-Crystal Microresonator Frequency Combs in the O-Band","authors":"Sarang Yeola,Alexa R. Carollo,Jizhao Zang,Scott B. Papp","doi":"10.1021/acsphotonics.6c01778","DOIUrl":"https://doi.org/10.1021/acsphotonics.6c01778","url":null,"abstract":"Photonic-crystal microresonators (PhCRs) are a powerful platform for generating Kerr frequency combs. Because Kerr-soliton dynamics in PhCRs are largely decoupled from the operating wavelength, the comb output can be engineered through customization of the device layer. Here, we demonstrate a tantalum pentoxide (tantala) PhCR platform that supports operation in the 1310 and 1550 nm bands, and we explore high-efficiency O-band soliton microcombs using all-semiconductor laser pumps. We engineer the PhCRs with silicon dioxide cladding and normal dispersion, achieving intrinsic quality factors exceeding 7 × 106. By pumping bandgap modes, we obtain robust and efficient soliton comb formation at a 200 GHz mode spacing. Our PhCRs enable systematic tuning from narrowband to broadband comb states within a single device geometry. The combs exhibit low relative intensity noise approaching the shot-noise limit, indicating stable phase-matching in the PhCR. Using a drop-port coupler, we amplify the comb output off-chip, demonstrating a pathway to high-power O-band sources. These results establish PhCR engineering in the tantala platform as a scalable approach to wavelength-agile, low-noise microcombs for applications in communications, sensing, and signaling.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"23 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2026-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149360509","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

To Blink or Not to Blink? A New Criterion to Quantify Luminescence Blinking 眨眼还是不眨眼？一种量化发光闪烁的新准则

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-06 DOI: 10.1021/acsphotonics.6c01948

Eduard A. Podshivaylov,Pavel A. Frantsuzov

{"title":"To Blink or Not to Blink? A New Criterion to Quantify Luminescence Blinking","authors":"Eduard A. Podshivaylov,Pavel A. Frantsuzov","doi":"10.1021/acsphotonics.6c01948","DOIUrl":"https://doi.org/10.1021/acsphotonics.6c01948","url":null,"abstract":"Colloidal semiconductor quantum dots are promising materials for numerous applications due to their tunable emission and high quantum yields. However, emission instability in the form of luminescence blinking remains a significant obstacle to their practical implementation. While recent advances in synthesis and surface engineering have demonstrated partial or complete blinking suppression, the quantitative assessment of the “quality” of this suppression remains challenging. Existing criteria typically rely on threshold-based classification into ON and OFF states, which becomes inherently ambiguous owing to the continuous distribution of emission intensities in single quantum dots. Here, we propose a threshold-free two-dimensional quantitative criterion based on the variance of the recombination rate and the relative quantum yield, both of which can be extracted from standard time-correlated single-photon counting measurements. We validate the criterion using simulated blinking trajectories covering all major blinking mechanisms and demonstrate that it cleanly separates them into distinct regions of the two-dimensional parameter space while providing a quantitative measure of the degree of suppression. This approach directly quantifies the temporal stability of emission without requiring arbitrary state definitions, thereby providing a robust metric for comparing different blinking suppression strategies and for guiding their further optimization.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"6 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2026-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149360506","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

Transmissive High-Q Resonance via Quasi-BIC Distributed Bragg Reflector Mode Coupling 准bic分布式Bragg反射模耦合传输高q谐振

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-05 DOI: 10.1021/acsphotonics.6c01861

Peiqi Yu,Xueyu Guan,Xinru Li,Jiakun Li,Ruonan Ji,Xuechu Shen,Shaowei Wang

{"title":"Transmissive High-Q Resonance via Quasi-BIC Distributed Bragg Reflector Mode Coupling","authors":"Peiqi Yu,Xueyu Guan,Xinru Li,Jiakun Li,Ruonan Ji,Xuechu Shen,Shaowei Wang","doi":"10.1021/acsphotonics.6c01861","DOIUrl":"https://doi.org/10.1021/acsphotonics.6c01861","url":null,"abstract":"Combining a narrow high-Q passband with broadband background suppression in a transmissive planar platform remains challenging. Here, we report and experimentally demonstrate a transmissive metasurface filter combining a grating-supported quasi-bound state in the continuum (q-BIC) resonance with a distributed Bragg reflector (DBR). In-plane symmetry breaking controls the radiative coupling of the grating-supported resonance, while the DBR provides broadband reflection and wavelength-dependent phase feedback. The coherent interaction between the grating-supported q-BIC resonance and DBR-mediated reflection and phase feedback opens a sharp transmission passband within a broad, flat suppression band. Mechanistically, this design effectively suppresses the multiple parasitic interference peaks common in conventional q-BIC devices, thereby realizing spectral filtering with a high signal-to-noise ratio. Numerical simulations predict a Q-factor of 1,937 and a peak transmission of 96%. We designed and fabricated a device operating in the 1550 nm telecommunication band. Experimental results indicate that the filter exhibits excellent angular tolerance, achieving a maximum Q-factor of 721 and a peak transmission of ∼70%. As proof-of-concept applications, the device is used for optical feature extraction and for classical polarization-state preparation and reconstruction, yielding a fidelity of F = 0.964 ± 0.015 between the reconstructed output polarization state and the target state.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"15 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2026-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359837","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

Raman-Assisted Multiband Nonlinear Frequency-Conversion Network in a High-Q LTOI Microdisk 高q LTOI微磁盘中的拉曼辅助多频带非线性变频网络

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2026-11-05 DOI: 10.1021/acsphotonics.6c01886

Zhifan Fang,Yuxuan He,Zhangning Pan,Xiongshuo Yan,Xianfeng Chen,Yuping Chen

{"title":"Raman-Assisted Multiband Nonlinear Frequency-Conversion Network in a High-Q LTOI Microdisk","authors":"Zhifan Fang,Yuxuan He,Zhangning Pan,Xiongshuo Yan,Xianfeng Chen,Yuping Chen","doi":"10.1021/acsphotonics.6c01886","DOIUrl":"https://doi.org/10.1021/acsphotonics.6c01886","url":null,"abstract":"On-chip nonlinear frequency conversion offers a key route to broadband coherent light sources, but spanning telecom, visible, and ultraviolet wavelengths within a single resonator remains challenging. Lithium tantalate-on-insulator, which has recently emerged as a promising material platform for integrated photonics, combines strong Raman activity, a large second-order nonlinearity, broad optical transparency and high resistance to photorefractive damage, thereby attracting increasing attention for on-chip nonlinear frequency conversion. Here, we experimentally demonstrate a Raman-assisted multiband frequency-conversion network in a high-Q lithium tantalate-on-insulator microdisk with a loaded quality factor of 2.48 × 106. Under separately optimized operating conditions, the device produces high-purity single-mode Raman lasing with a threshold of 3.14 mW, a slope efficiency of 32.44%, and a side-mode suppression ratio of 29.5 dB, as well as multiple Stokes lines and an anti-Stokes line. Together, the directly observed Raman fields and the intermediate Stokes fields inferred from energy conservation define a network of cascaded χ(2) pathways that generates near-infrared and visible emission and extends to 312.6 nm in the ultraviolet. These results demonstrate cooperative Raman and second-order nonlinear interactions across widely separated spectral bands in a single microcavity, providing a route to integrated multiband sources and a platform for studying coupled nonlinear dynamics.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"22 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2026-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359839","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