ACS Photonics最新文献_第9页

192-Channel Monolithically Integrated Reconfigurable Optical Add-Drop Multiplexer on Silicon for Ultrahigh-Capacity Hybrid WDM-PDM-MDM Systems 用于超高容量混合WDM-PDM-MDM系统的192通道单片集成可重构光加丢多路复用器

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-28 DOI: 10.1021/acsphotonics.5c00429

Yingying Peng, Weike Zhao, Xiaolin Yi, Dajian Liu, Yuluan Xiang, Yuanjian Wan, Kang Li, Jian Wang, Yaocheng Shi and Daoxin Dai*,

{"title":"192-Channel Monolithically Integrated Reconfigurable Optical Add-Drop Multiplexer on Silicon for Ultrahigh-Capacity Hybrid WDM-PDM-MDM Systems","authors":"Yingying Peng, Weike Zhao, Xiaolin Yi, Dajian Liu, Yuluan Xiang, Yuanjian Wan, Kang Li, Jian Wang, Yaocheng Shi and Daoxin Dai*, ","doi":"10.1021/acsphotonics.5c00429","DOIUrl":"10.1021/acsphotonics.5c00429","url":null,"abstract":"A monolithically integrated silicon photonic chip of 192-channel reconfigurable optical add-drop multiplexer (ROADM) for ultrahigh-capacity hybrid wavelength-division-multiplexing-polarization-division multiplexing-mode-division multiplexing (WDM-PDM-MDM) systems is proposed and demonstrated for the first time by involving 32 wavelengths, three guided modes, as well as dual polarizations. For the present silicon photonic chip, high-performance functional elements for the channel adding/dropping and the power equalization are included, such as crossbar wavelength-selective switches (WSSs) based on adiabatic elliptical-microrings (AEMs), ultralow-loss waveguide crossings, and variable optical attenuators (VOAs). In particular, the AEMs are designed with maximized free spectral ranges (FSRs) to cover the 32 wavelength-channels as desired for the improvement of the spectrum utilization. The fabricated 192-channel ROADM chip has more than 2000 elements integrated, including 192 AEMs, 1152 waveguide crossings, 384 grating couplers, 198 microheaters, 258 pads, 6 polarization-splitter-rotators (PSRs), 4 asymmetric adiabatic couplers (ADCs), showing on-chip excess losses of 5–15 dB, intermode crosstalk of <−10 dB, and interwavelength crosstalk of <−17 dB for any one of the 192 channels. With such a ROADM, one can arbitrarily add/drop the optical signals to/from any channels of the multimode bus waveguide by switching the corresponding AEM. The system experiments are demonstrated with a 28-GBaud 16 Quadrature Amplitude Modulation (16QAM) signal, showing that the optical signal-to-noise ratio (OSNR) power penalty due to the ROADM chip is less than 17 dB at the BER of 3.8 × 10–3. The proposed scheme can be extended to an even higher capacity by adopting more channels.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"4897–4906"},"PeriodicalIF":6.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144911362","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

Simultaneous Spectrum and Polarization Detection Based on a Single Metasurface 基于单一超表面的同时光谱和偏振检测

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-28 DOI: 10.1021/acsphotonics.5c01497

Ruizhe Zhao, Chenyi Tian, Chen Zhou, Guangzhou Geng, Haoyang He, Peijin Li, Junjie Li, Yongtian Wang and Lingling Huang*,

{"title":"Simultaneous Spectrum and Polarization Detection Based on a Single Metasurface","authors":"Ruizhe Zhao, Chenyi Tian, Chen Zhou, Guangzhou Geng, Haoyang He, Peijin Li, Junjie Li, Yongtian Wang and Lingling Huang*, ","doi":"10.1021/acsphotonics.5c01497","DOIUrl":"10.1021/acsphotonics.5c01497","url":null,"abstract":"Simultaneously detecting multidimensional information on light is highly desired in areas such as remote sensing, biomedicine, and manufacturing. The detected spectrum and polarization characteristics can reveal hidden information in intensity-only images. However, traditional methods for detecting the spectrum and polarization of light suffer from cumbersome setups and limited time resolution. Here, we demonstrate a metasurface with the capability of simultaneously detecting the spectrum and polarization of the input light. A set of optimized phase profiles is encoded to the orthogonal polarization channels of the metasurface, leading to the generation of 2 × 2 diffraction orders with specified polarization states. Due to the inherent dispersive nature of the metasurface, the spectrum of incident light can be reconstructed after calibrating the relation between diffraction angles and incident wavelengths. The reconstructed spectra are consistent with the results obtained from a commercial spectrometer with an average fidelity of 88.64% in the working range of 690–830 nm. Meanwhile, the demonstrated metasurface can be utilized in a reverse configuration and implement broadband parallel polarization analysis by exploiting the generated diffraction orders. The average deviations of the orientation angle and elliptical angle between measured and target values are 1.689° and 1.399°, respectively, which exhibit good performance in broadband polarization detection. Our demonstrated method provides a feasible way for simultaneously detecting the spectrum and polarization of input light and may be used for integrating with a CCD camera for achieving multidimensional optical field detection and imaging.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"5283–5290"},"PeriodicalIF":6.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144911313","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

Enhanced Broadband Terahertz Trace Fingerprint Spectrum Utilizing Multiunit Fano Metasurfaces 利用多单元范诺元表面的增强宽带太赫兹痕迹指纹频谱

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-27 DOI: 10.1021/acsphotonics.5c01592

Hongshun Sun, Yunhao Cao, Yusa Chen, Liye Li, Lijun Ma, Shengxiao Jin, Guodong Gu, Xubo Song, Wengang Wu* and Zhihong Feng,

{"title":"Enhanced Broadband Terahertz Trace Fingerprint Spectrum Utilizing Multiunit Fano Metasurfaces","authors":"Hongshun Sun, Yunhao Cao, Yusa Chen, Liye Li, Lijun Ma, Shengxiao Jin, Guodong Gu, Xubo Song, Wengang Wu* and Zhihong Feng, ","doi":"10.1021/acsphotonics.5c01592","DOIUrl":"10.1021/acsphotonics.5c01592","url":null,"abstract":"Terahertz (THz) spectroscopy can obtain characteristic fingerprint spectra by detecting the structural vibrations of molecules. Nanophotonic enhancement and subwavelength field confinement have expanded the application scope of this technology. However, current methods still require complex spectroscopic equipment and face obstacles in the trace analysis of analytes and broadband detection. Here, we introduce a novel metasurface design approach to detect the broadband absorption spectra of molecules, which combines the simplest detection method (transmission metasurface chipset) with the chemical specificity of THz spectroscopy. Specifically, we designed a metasurface chipset based on Fano resonance, capable of providing frequency-selective spectra and surface-sensitive resonances between 0.18 and 1.20 THz. We used this method to detect distinct absorption signatures of different interacting analytes, including l-tyrosine (5 and 10 mg/mL) and bovine hemoglobin. By combining the molecular absorption spectra with the transmission spectra of each metasurface chip, broadband detection was achieved through the design of the metasurface chipset, paving the way for the field-deployable applications of miniature THz spectroscopy devices.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"5302–5311"},"PeriodicalIF":6.7,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144906569","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

Chiral qBICs Induced Near-Infrared Exciton–Polaritons Engineering via a Structure–Spectra Framework 基于结构-光谱框架的手性qbic诱导近红外激子-极化工程

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-26 DOI: 10.1021/acsphotonics.5c01337

Yuchen Xie, Tian Guo, Qiuchen Wu, Yufeng Xie, Siyuan Chang, Ping Gu, Jing Chen and Zhendong Yan*,

{"title":"Chiral qBICs Induced Near-Infrared Exciton–Polaritons Engineering via a Structure–Spectra Framework","authors":"Yuchen Xie, Tian Guo, Qiuchen Wu, Yufeng Xie, Siyuan Chang, Ping Gu, Jing Chen and Zhendong Yan*, ","doi":"10.1021/acsphotonics.5c01337","DOIUrl":"10.1021/acsphotonics.5c01337","url":null,"abstract":"Exciton–polaritons (EPs), hybrid quasi-particles usually arising from the strong coupling between quasibound states in the continuum (qBICs) and excitons in transition-metal dichalcogenides (TMDCs), enable photon spin-controlled light–matter interactions with distinctive properties. Traditional empirical reasoning and trial-and-error procedures for a high-quality (Q) chiral qBIC metasurface for EPs are inefficient and time-consuming. Particularly, computational requirements scale exponentially with the number of design parameters for a complex metasurface structure, severely limiting the exploration of optimal configurations. In this work, we construct a structure–spectra framework based on a residual deep neural network to engineer near-infrared EPs within a bulk MoTe2-based cut-cuboids metasurface featuring a high-Q chiral qBIC dominated by a magnetic dipole mode with a near-perfect circular dichroism (∼0.97). The structure–spectra framework accurately predicts the strong coupling of the self-hybridized EPs and Rabi splitting with only 1.5% error and robust performance across unexplored parameter space. Notably, the transition from weak through intermediate to strong coupling regime is successfully simulated and predicted by modulating the exciton oscillator strength. This flexible tuning of the spin-controlled self-hybridized EPs by oscillator strength and tilt angle demonstrates a strong dependence on the quality factor-to-effective mode volume ratio (Q/Veff) of the proposed self-hybridized chiral metasurface. The proposed framework provides a new paradigm for engineering chiral qBIC metasurfaces and EPs in TMDCs, accelerating the explorations and applications of strong light–matter interactions in the near-infrared region.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"5209–5219"},"PeriodicalIF":6.7,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144898268","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

Modulation of Interfacial Band Bending and Enhanced Optical Performance in GaAs/AlGaAs Core–Shell Nanowires with Ag Nanoparticles Ag纳米粒子对GaAs/AlGaAs核壳纳米线界面带弯曲的调制及光学性能的增强

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-26 DOI: 10.1021/acsphotonics.5c01300

Puning Wang, Bingheng Meng, Huan Liu, Xiaobing Hou, Yubin Kang, Jilong Tang, Qun Hao, Zhipeng Wei* and Rui Chen*,

{"title":"Modulation of Interfacial Band Bending and Enhanced Optical Performance in GaAs/AlGaAs Core–Shell Nanowires with Ag Nanoparticles","authors":"Puning Wang, Bingheng Meng, Huan Liu, Xiaobing Hou, Yubin Kang, Jilong Tang, Qun Hao, Zhipeng Wei* and Rui Chen*, ","doi":"10.1021/acsphotonics.5c01300","DOIUrl":"10.1021/acsphotonics.5c01300","url":null,"abstract":"One-dimensional GaAs/AlGaAs core–shell nanowires (NWs) have great potential for advanced optoelectronic applications. However, their optical performance is often hindered by interfacial band bending at the core–shell interface. This work presents a new method of modulating the interfacial band structure and enhancing the optical performance by incorporating silver nanoparticles (Ag NPs). GaAs/AlGaAs NW arrays were grown by using molecular beam epitaxy, followed by the deposition of Ag NPs via vacuum thermal evaporation. Spectroscopic analysis shows that the Ag NPs effectively suppress interfacial band bending, as indicated by the disappearance of quasi-type-II transitions, narrower spectral line-widths, and reduced carrier trapping. Photoluminescence measurements rule out surface plasmon resonance (SPR) enhancement and attribute the observed intensity variations to the absorption of Ag NPs and the energy mismatch. Room-temperature random lasing experiments demonstrate that GaAs/AlGaAs NWs with Ag NPs exhibit a significantly lower lasing threshold and a stronger spatial localization. These properties are related to the improved material quality and modulation of the interfacial band bending. These findings highlight the potential of Ag NPs for tailoring interfacial band structures, paving the way for high-performance nanoscale optoelectronics, particularly in lasers.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"5179–5188"},"PeriodicalIF":6.7,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144906570","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

Development and Challenges of Ga2O3–Based Heterojunctions for Deep-UV Detectors 深紫外探测器用ga2o3异质结的发展与挑战

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-26 DOI: 10.1021/acsphotonics.5c01288

Ke Wang, Zhichen Wu, Haochen Tong, Zhongqing Zeng, Jaekyun Kim, Wensi Cai*, Jidong Jin* and Zhigang Zang*,

{"title":"Development and Challenges of Ga2O3–Based Heterojunctions for Deep-UV Detectors","authors":"Ke Wang, Zhichen Wu, Haochen Tong, Zhongqing Zeng, Jaekyun Kim, Wensi Cai*, Jidong Jin* and Zhigang Zang*, ","doi":"10.1021/acsphotonics.5c01288","DOIUrl":"10.1021/acsphotonics.5c01288","url":null,"abstract":"Deep-ultraviolet (DUV) detectors have attracted increased attention recently for applications such as missile guidance and secure satellite communication. As one of the emerging ultrawide bandgap semiconductors, gallium oxide (Ga2O3) is sensitive to most of the solar-blind band of the solar spectrum and is considered an ideal material for DUV detectors. Heterojunction photodetectors offer the advantages of low dark current, fast response, large current switching ratio, and significant internal electric fields, making them ideal candidates for Ga2O3 photodetectors. This review comprehensively summarizes the recent progress on emerging heterojunction DUV detectors based on Ga2O3, highlighting the fundamental physics, key parameters, and their relation to material properties. The review also critically examines the diverse heterojunction architectures (e.g., p–n, p–i–n) being explored with Ga2O3, correlating their design with resultant detector performance metrics. Furthermore, we discussed potential future applications of Ga2O3 heterojunction-based DUV photodetectors in specialized fields. The challenges that limit device performance and present roadblocks to commercialization are also discussed, with potential solutions to these challenges explored.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"4851–4878"},"PeriodicalIF":6.7,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144906571","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 Discrete Illumination-Based Compressed Ultrafast Photography 基于离散照明的全光压缩超快摄影

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-26 DOI: 10.1021/acsphotonics.5c01277

Long Cheng, Dalong Qi*, Jiali Yao*, Ning Xu, Chengyu Zhou, Wenzhang Lin, Yu He, Zhen Pan, Hongmei Ma, Yunhua Yao, Lianzhong Deng, Yuecheng Shen, Zhenrong Sun and Shian Zhang*,

{"title":"All-Optical Discrete Illumination-Based Compressed Ultrafast Photography","authors":"Long Cheng, Dalong Qi*, Jiali Yao*, Ning Xu, Chengyu Zhou, Wenzhang Lin, Yu He, Zhen Pan, Hongmei Ma, Yunhua Yao, Lianzhong Deng, Yuecheng Shen, Zhenrong Sun and Shian Zhang*, ","doi":"10.1021/acsphotonics.5c01277","DOIUrl":"10.1021/acsphotonics.5c01277","url":null,"abstract":"Snapshot ultrafast optical imaging (SUOI) plays a vital role in capturing complex transient events in real time, with significant implications for both fundamental science and practical applications. As an outstanding talent in SUOI, compressed ultrafast photography (CUP) has demonstrated remarkable frame rate reaching trillions of frames per second and sequence depth over hundreds of frames. Nevertheless, as CUP relies on streak cameras, the system’s imaging fidelity suffers from an inevitable limitation induced by the charge coupling artifacts in a streak camera. Moreover, although advanced image reconstruction algorithms have improved the recovered scenes, its high compression ratio still causes a compromise in image quality. To address these challenges, we propose a novel approach termed all-optical discrete illumination compressed ultrafast photography (ADI-CUP), which employs a free-space angular-chirp-enhanced delay (FACED) technique to temporally stretch femtosecond pulses and achieves discrete illumination for dynamic scenes. With its distinctive system architecture, ADI-CUP features adjustable frame numbers and flexible interframe intervals ranging from picoseconds to nanoseconds, thereby achieving high-fidelity ultrafast imaging in a snapshot. Experimental results demonstrate the system’s superior dynamic spatial resolution and its capability to visualize ultrafast phenomena with complex spatial details, such as stress wave propagation in LiF crystals and air plasma channel formation. These results highlight the potential of ADI-CUP for high-fidelity, real-time ultrafast imaging, which provides an unprecedented tool for advancing the frontiers of ultrafast science.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"5155–5164"},"PeriodicalIF":6.7,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144898269","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

Polarization-Modulated Solar-Blind Optoelectronic Synapse Based on Anisotropic β-Ga2O3 Crystal for Logic Operations and Motion Perception 基于各向异性β-Ga2O3晶体的偏振调制日盲光电突触的逻辑运算和运动感知

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-26 DOI: 10.1021/acsphotonics.5c01561

Zhenyang Wang, Chao Wu*, Fengmin Wu, Daoyou Guo* and Shunli Wang*,

{"title":"Polarization-Modulated Solar-Blind Optoelectronic Synapse Based on Anisotropic β-Ga2O3 Crystal for Logic Operations and Motion Perception","authors":"Zhenyang Wang, Chao Wu*, Fengmin Wu, Daoyou Guo* and Shunli Wang*, ","doi":"10.1021/acsphotonics.5c01561","DOIUrl":"10.1021/acsphotonics.5c01561","url":null,"abstract":"Photoelectronic synapses exhibit remarkable potential in neuromorphic systems due to their unique multimodal sensing and brain-like information processing capabilities. However, their complex device architectures and limited functionalities remain critical bottlenecks. In this study, we innovatively developed a polarization-sensitive optoelectronic synaptic device based on β-Ga2O3 single crystals. Through systematic characterization, we revealed the synergistic advantages of the (100)-oriented β-Ga2O3 crystal in terms of persistent photoconductivity (PPC) effects and anisotropy. The developed solar-blind polarization-sensitive synaptic device demonstrated polarization-dependent postsynaptic current (EPSC), short-term memory (STM), and advanced learning–forgetting–relearning behavior. Notably, we achieved in situ switching between the OR/AND and NOR/NAND logic gates through polarization modulation. For neuromorphic computing applications, the device exhibited superior synaptic weight modulation capabilities, enabling the control of conductance states via a photoenhancement/electrosuppression mechanism and achieving a 77.6% classification accuracy on a Fashion MNIST data set. Notably, we realized a multimodal signal fusion function, achieving a 98.2% real-time recognition accuracy for missile motion perception. This work fundamentally advances the development and application of neuromorphic optoelectronics by realizing synaptic functions through polarization control.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"5291–5301"},"PeriodicalIF":6.7,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144898267","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

Quantum Dot Photodetector and Laser Monolithically Integrated on Silicon Photonics 硅光子学上的量子点光电探测器与激光单片集成

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-25 DOI: 10.1021/acsphotonics.5c01299

Rosalyn Koscica*, Alec M. Skipper, Bei Shi, Gerald Leake, Michael Zylstra, Joshua Herman, Yuan Liu, Chongxin Zhang, David Harame, Jonathan Klamkin and John Bowers,

{"title":"Quantum Dot Photodetector and Laser Monolithically Integrated on Silicon Photonics","authors":"Rosalyn Koscica*, Alec M. Skipper, Bei Shi, Gerald Leake, Michael Zylstra, Joshua Herman, Yuan Liu, Chongxin Zhang, David Harame, Jonathan Klamkin and John Bowers, ","doi":"10.1021/acsphotonics.5c01299","DOIUrl":"10.1021/acsphotonics.5c01299","url":null,"abstract":"III–V quantum dot (QD) photodetectors enable on-chip sensing in the telecommunications O-band with high responsivity and low dark current. We demonstrate for the first time III–V QD photodetectors monolithically integrated with silicon nitride waveguides and III–V QD lasers. III–V QD material is heteroepitaxially grown in pockets on silicon photonics coupons, where it is coprocessed into III–V ridge waveguides serving as both photodetectors and lasers. The photodetectors have a dark current of 250 pA and a responsivity of 0.344 A/W at a –2 V bias. Photodetectors integrated with lasers in a loop configuration correctly measure threshold current and in-waveguide optical power at the few-mW level. This work demonstrates multifunctional III–V devices on the silicon photonics platform, enabling a wider variety of monolithically integrated active components without the need for additional process steps.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"5173–5178"},"PeriodicalIF":6.7,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsphotonics.5c01299","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144898273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward High Wall-Plug Efficiency in Nanowire-Based Red Micro-LEDs 纳米线红色微型led的高壁插效率研究

IF 6.7 1区物理与天体物理

ACS Photonics Pub Date : 2025-08-25 DOI: 10.1021/acsphotonics.5c00820

Ayush Pandey, Maddaka Reddeppa, Yixin Xiao, Yakshita Malhotra, Yifu Guo, Jiangnan Liu, Yuanpeng Wu, Kai Sun and Zetian Mi*,

{"title":"Toward High Wall-Plug Efficiency in Nanowire-Based Red Micro-LEDs","authors":"Ayush Pandey, Maddaka Reddeppa, Yixin Xiao, Yakshita Malhotra, Yifu Guo, Jiangnan Liu, Yuanpeng Wu, Kai Sun and Zetian Mi*, ","doi":"10.1021/acsphotonics.5c00820","DOIUrl":"10.1021/acsphotonics.5c00820","url":null,"abstract":"Displays for future technologies such as augmented and virtual reality require ultrahigh resolution and efficient power consumption. While micro-LEDs can attain the required sizes for these displays, at present, their efficiencies are severely lacking, especially the red-emitting ones. Here, we show that by utilizing a combination of strategies for enhancing the carrier injection efficiencies, including nitrogen polarity, Mg-doped AlGaN electron-blocking layer, and a p-GaN layer with gradient doping, unprecedentedly high wall-plug efficiency for a submicron red LED has been achieved. Light-emitting diodes with submicrometer dimensions exhibited an emission wavelength of ∼650 nm, reaching a peak external quantum efficiency of ∼12.3%, and a wall-plug efficiency of ∼11.4%, corresponding to a peak electrical efficiency of ∼92%. Through this work, we demonstrate that the hitherto low electrical efficiency of nanowire-based devices can be overcome through careful design of the device heterostructure and that such devices can form the foundation of future micro-LED displays.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 9","pages":"4988–4995"},"PeriodicalIF":6.7,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144898274","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