ACS Photonics最新文献_第10页

An Inverse-Design Wavelength Demultiplexer for On-Chip Photoluminescence Sorting in TMDC Heterostructures 一种用于TMDC异质结构片上光致发光分选的反设计波长解复用器

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-10 DOI: 10.1021/acsphotonics.5c00934

Anastasiia Zalogina, Chi Li, Ivan Zhigulin, Nathan Coste, Hossein Alijani, Otto Cranwell Schaeper, Hugo Charlton, Joseph Ward, Haoran Ren, Igor Aharonovich

{"title":"An Inverse-Design Wavelength Demultiplexer for On-Chip Photoluminescence Sorting in TMDC Heterostructures","authors":"Anastasiia Zalogina, Chi Li, Ivan Zhigulin, Nathan Coste, Hossein Alijani, Otto Cranwell Schaeper, Hugo Charlton, Joseph Ward, Haoran Ren, Igor Aharonovich","doi":"10.1021/acsphotonics.5c00934","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00934","url":null,"abstract":"Emerging two-dimensional transition metal dichalcogenides (TMDCs) offer a promising platform for on-chip integrated photonics because of their unique optical and electronic properties. Their naturally passivated surfaces make them highly tolerant to lattice mismatch, enabling seamless heterogeneous integration by stacking different van der Waals materials, a crucial step in the development of advanced photonic devices. In this work, we present an inverse-design wavelength demultiplexing waveguide capable of separating three distinct wavelengths. We further showcase its application in sorting and routing of distinct photoluminescence from the heterojunction formed by WS2 and WSe2 monolayers. The integrated nanophotonic chip splits and directs excitonic emission into individual waveguides at both room and cryogenic temperatures. Our demonstration opens new perspectives for integrating light sources in van der Waals materials with functional integrated photonics, offering a versatile platform for both fundamental research and practical applications.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"558 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252802","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

Increased Modal Gain in 1.55 μm Quantum Dot Lasers Based on Improved Size Homogeneity Obtained by Comprehensive Growth Optimization 基于改进尺寸均匀性的1.55 μm量子点激光器模态增益提高

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-10 DOI: 10.1021/acsphotonics.5c00616

Vikram Khatri, Vitalii Sichkovskyi, Larisa Popilevsky, Yaron Kauffmann, Gadi Eisenstein, Johann Peter Reithmaier

{"title":"Increased Modal Gain in 1.55 μm Quantum Dot Lasers Based on Improved Size Homogeneity Obtained by Comprehensive Growth Optimization","authors":"Vikram Khatri, Vitalii Sichkovskyi, Larisa Popilevsky, Yaron Kauffmann, Gadi Eisenstein, Johann Peter Reithmaier","doi":"10.1021/acsphotonics.5c00616","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00616","url":null,"abstract":"InAs quantum dot (QD) lasers exhibit improved properties compared to quantum well lasers like higher temperature stability, lower threshold current density, and significantly reduced laser line width. This study aims to further optimize InAs-QD morphology and optical material properties in order to narrow the gain spectrum of the ground state transition, improving the laser performance. Self-assembled InAs QDs were fabricated on InAlGaAs layers lattice-matched to InP by using molecular beam epitaxy. Atomic force microscopy characterization and low-temperature photoluminescence spectroscopy were used to assess the size uniformity, emission wavelength, QD density, and reproducibility. In addition to optimizing growth parameters, the impact of an additional ultrathin nucleation layer (NL) on the QD formation process and related size homogeneity was investigated. High resolution scanning transmission electron microscopy confirmed the significant role played by the NL and the exact composition of the QDs and their surrounding layers. By optimizing the growth temperature, the V/III ratio, and by introducing a GaAs-NL, a photoluminescence line width of 17.6 meV at 10 K from a single QD layer and a record narrow line width of 18.4 meV for a stack layer of six QD layers were demonstrated. The structures with NL exhibit a blue shift in the peak wavelength by maintaining uniformity compared to QD reference structures. Additionally, processed broad-area lasers based on the optimized QD layers demonstrate a record high modal gain of 26.5 cm–1 per QD layer.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"11 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144260191","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

Graphene/Poly(methyl Methacrylate) Heterostructure-Gated Flexible Organic Light-Emitting Transistors 石墨烯/聚甲基丙烯酸甲酯异质结构门控柔性有机发光晶体管

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-10 DOI: 10.1021/acsphotonics.4c02457

Shuangdeng Yuan, Dingdong Zhang, Jinhong Du, Xu Han, Rui Liu, Yun Sun, Songfeng Pei, Wencai Ren

{"title":"Graphene/Poly(methyl Methacrylate) Heterostructure-Gated Flexible Organic Light-Emitting Transistors","authors":"Shuangdeng Yuan, Dingdong Zhang, Jinhong Du, Xu Han, Rui Liu, Yun Sun, Songfeng Pei, Wencai Ren","doi":"10.1021/acsphotonics.4c02457","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c02457","url":null,"abstract":"Organic light-emitting transistors (OLETs) are possibly the smallest integrated optoelectronic devices and have great potential for next-generation wearable intelligent display technology. A flexible and transparent gate/dielectric heterostructure is basically required for the gate modulation of luminescence. Here, a large-area graphene/poly(methyl methacrylate) (PMMA) heterostructure film is produced by a centrifugal casting (CC) and ozone treatment strategy. The CC process enables the film to be highly uniform with coefficients of variation (CV) of 2.66, 0.52, 0.61, and 0.104% for PMMA thickness, sheet resistance, optical transmittance@550 nm wavelength, and dielectric constant, respectively, which are significantly superior to those prepared by the commonly used spin-coating method. The ozone treatment effectively reduces the surface roughness and improves the surface compatibility, facilitating the deposition of an organic emissive channel layer with high photoluminescence intensity. On this basis, flexible graphene/Oz-PMMA heterostructure-gated single-layer OLET is demonstrated with effective gate modulation of luminescence. A maximum external quantum efficiency (EQEMAX) of 7.53% and maximum luminance of more than 20,000 cd m–2, reaching on par with the best rigid devices of the same planar structure. Moreover, the performance of the OLET devices is highly consistent with a CV of EQEMAX of only 2.5%, laying the foundation for future large-scale practical applications. The study provides an ideal gate/dielectric platform for the production of flexible integrated optoelectronic devices.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"150 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252799","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

Large Optical Lateral Force with a Phase-Engineered Photonic Spin Hall Effect 具有相位工程光子自旋霍尔效应的大光学侧向力

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-09 DOI: 10.1021/acsphotonics.4c01468

Hang Li, Qi Jia, Bojian Shi, Yuan Zhou, Yongyin Cao, Kunpeng Luan, Dahui Wang, Tongtong Zhu, Yuzhi Shi, Donghua Tang, Yanxia Zhang, Xiaoxin Li, Rui Feng, Fangkui Sun, Baoli Yao, Pengling Yang, Cheng-Wei Qiu, Weiqiang Ding

{"title":"Large Optical Lateral Force with a Phase-Engineered Photonic Spin Hall Effect","authors":"Hang Li, Qi Jia, Bojian Shi, Yuan Zhou, Yongyin Cao, Kunpeng Luan, Dahui Wang, Tongtong Zhu, Yuzhi Shi, Donghua Tang, Yanxia Zhang, Xiaoxin Li, Rui Feng, Fangkui Sun, Baoli Yao, Pengling Yang, Cheng-Wei Qiu, Weiqiang Ding","doi":"10.1021/acsphotonics.4c01468","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01468","url":null,"abstract":"The photonic spin Hall effect (PSHE) manifests as a spin-dependent lateral shift at an interface due to a spin–orbit interaction. When circularly polarized light is incident on a particle at the surface, it typically generates an optical lateral force (OLF) of the order of ∼0.05 pN/(mW·μm–2) governed by PSHE [Nature Photonics 9, 809 (2015)]. Intuitively, the net OLF vanishes when two beams of equal intensity with opposite circular polarizations (e.g., left- and right-handed) are incident simultaneously. In this work, we exploited the phase-engineered PSHE by superposing two chiral beams with opposite circular polarizations and a controlled phase difference. Both theoretical analysis and experimental results demonstrate that this approach, combining engineered phase difference with circular polarization control, significantly enhances the OLF up to the order of ∼1.0 pN/(mW·μm–2). This large optical lateral force (LOLF) enables new applications in PSHE-based systems and optical micromanipulation.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"20 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144252803","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

Photoemission Electron Microscopy of Exciton–Polaritons in Thin WSe2 Waveguides 薄WSe2波导中激子极化子的光电发射电子显微镜

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-09 DOI: 10.1021/acsphotonics.5c00290

Tobias Eul, Miwan Sabir, Victor DeManuel-Gonzalez, Florian Diekmann, Kai Rossnagel, Michael Bauer

引用次数: 0

Low-Loss Charge Transfer Plasmons in Graphene/α-RuCl3 Heterostructures Below 40 K 石墨烯/α-RuCl3异质结构中的低损耗电荷转移等离子体

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-06 DOI: 10.1021/acsphotonics.5c0029610.1021/acsphotonics.5c00296

Boyi Zhou, Ran Jing, Wenjun Zheng, Xinzhong Chen, Jiacheng Sun, Zijian Zhou, Heng Wang, Lukas Wehmeier, Erdong Song, Bing Cheng, Yinan Dong, Matthew Cothrine, David Mandrus, G. L. Carr, Xu Du, Erik A. Henriksen, D. N. Basov and Mengkun Liu*,

{"title":"Low-Loss Charge Transfer Plasmons in Graphene/α-RuCl3 Heterostructures Below 40 K","authors":"Boyi Zhou, Ran Jing, Wenjun Zheng, Xinzhong Chen, Jiacheng Sun, Zijian Zhou, Heng Wang, Lukas Wehmeier, Erdong Song, Bing Cheng, Yinan Dong, Matthew Cothrine, David Mandrus, G. L. Carr, Xu Du, Erik A. Henriksen, D. N. Basov and Mengkun Liu*, ","doi":"10.1021/acsphotonics.5c0029610.1021/acsphotonics.5c00296","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00296https://doi.org/10.1021/acsphotonics.5c00296","url":null,"abstract":"Charge transfer at material interfaces governs a wide range of physical properties, from electronic band structures to emergent collective excitations. In two-dimensional (2D) material heterostructures, charge transfer phenomena play important roles in enabling novel quantum phases, proximity effects, and tunable plasmonic responses. One representative charge transfer interface is formed between α-RuCl3, a van der Waals material with high electron affinity, and graphene. Significant charge transfer across this interface induces the formation of charge-transfer plasmon polaritons (CPPs), hybrid excitations between light and charge oscillations. However, previous studies found that as the charge transfer process takes place, α-RuCl3 becomes lossy, which limits the quality factor of CPPs. Here, we investigate CPPs down to 10 K using a home-built scattering-type scanning near-field optical microscope (s-SNOM) optimized for low-temperature measurements. Our study reveals a dramatic suppression of plasmon loss channels below 40 K, contributing to a significant enhancement in the plasmonic quality factor. This reduction in loss is likely attributed to the blue shift of the correlation-induced Mott gap in α-RuCl3 with decreasing temperature, along with the reduction of phonon scattering at low temperature. Our results highlight the potential of using s-SNOM and CPPs to study complex 2D interfaces and reveal correlated electron dynamics in the underlying material.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 6","pages":"3082–3090 3082–3090"},"PeriodicalIF":6.5,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306012","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

Quantitative MINFLUX Imaging via Sequential Labeling Localization 通过顺序标记定位的MINFLUX定量成像

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-06 DOI: 10.1021/acsphotonics.5c0065810.1021/acsphotonics.5c00658

Shu Li, Xinlei Kou, Jingyao Xu, Min Gu and Jing Wang*,

{"title":"Quantitative MINFLUX Imaging via Sequential Labeling Localization","authors":"Shu Li, Xinlei Kou, Jingyao Xu, Min Gu and Jing Wang*, ","doi":"10.1021/acsphotonics.5c0065810.1021/acsphotonics.5c00658","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00658https://doi.org/10.1021/acsphotonics.5c00658","url":null,"abstract":"MINimal fluorescence photon FLUXes (MINFLUX) nanoscopy localizes individual switchable fluorophores using a probing donut-shaped excitation beam, achieving resolutions ranging from 1 to 3 nm for structures in both fixed and living cells. However, traditional MINFLUX data sets obtained through fluorophore multiple blinking and readout methods present untapped opportunities for quantitative investigations within its resolution limits. Here, we introduce a quantitative MINFLUX imaging method (q-MINFLUX) with nanobody point accumulation in nanoscale topography, followed by the sequential localization of target subsets. Notably, sequential localization events related to the same molecule share a common trace ID (exported parameter TID), which can be used for accurately calculating labeled targets, going beyond the mere binning of molecule localizations for spatial visualization. We use our method in a proof-of-principle demonstration to map the number of proteins in one cluster of molecular arrangement of the microtubules and the mitochondria in situ in 2D and 3D. Our methods provide a direct and adaptable approach for quantifying proteins in dense clusters using MINFLUX nanoscopy imaging.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 6","pages":"2916–2922 2916–2922"},"PeriodicalIF":6.5,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306009","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

Quantitative MINFLUX Imaging via Sequential Labeling Localization 通过顺序标记定位的MINFLUX定量成像

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-06 DOI: 10.1021/acsphotonics.5c00658

Shu Li, Xinlei Kou, Jingyao Xu, Min Gu, Jing Wang

{"title":"Quantitative MINFLUX Imaging via Sequential Labeling Localization","authors":"Shu Li, Xinlei Kou, Jingyao Xu, Min Gu, Jing Wang","doi":"10.1021/acsphotonics.5c00658","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00658","url":null,"abstract":"MINimal fluorescence photon FLUXes (MINFLUX) nanoscopy localizes individual switchable fluorophores using a probing donut-shaped excitation beam, achieving resolutions ranging from 1 to 3 nm for structures in both fixed and living cells. However, traditional MINFLUX data sets obtained through fluorophore multiple blinking and readout methods present untapped opportunities for quantitative investigations within its resolution limits. Here, we introduce a quantitative MINFLUX imaging method (q-MINFLUX) with nanobody point accumulation in nanoscale topography, followed by the sequential localization of target subsets. Notably, sequential localization events related to the same molecule share a common trace ID (exported parameter TID), which can be used for accurately calculating labeled targets, going beyond the mere binning of molecule localizations for spatial visualization. We use our method in a proof-of-principle demonstration to map the number of proteins in one cluster of molecular arrangement of the microtubules and the mitochondria in situ in 2D and 3D. Our methods provide a direct and adaptable approach for quantifying proteins in dense clusters using MINFLUX nanoscopy imaging.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"39 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144228791","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

Low-Loss Charge Transfer Plasmons in Graphene/α-RuCl3 Heterostructures Below 40 K 石墨烯/α-RuCl3异质结构中的低损耗电荷转移等离子体

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-06 DOI: 10.1021/acsphotonics.5c00296

Boyi Zhou, Ran Jing, Wenjun Zheng, Xinzhong Chen, Jiacheng Sun, Zijian Zhou, Heng Wang, Lukas Wehmeier, Erdong Song, Bing Cheng, Yinan Dong, Matthew Cothrine, David Mandrus, G. L. Carr, Xu Du, Erik A. Henriksen, D. N. Basov, Mengkun Liu

{"title":"Low-Loss Charge Transfer Plasmons in Graphene/α-RuCl3 Heterostructures Below 40 K","authors":"Boyi Zhou, Ran Jing, Wenjun Zheng, Xinzhong Chen, Jiacheng Sun, Zijian Zhou, Heng Wang, Lukas Wehmeier, Erdong Song, Bing Cheng, Yinan Dong, Matthew Cothrine, David Mandrus, G. L. Carr, Xu Du, Erik A. Henriksen, D. N. Basov, Mengkun Liu","doi":"10.1021/acsphotonics.5c00296","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00296","url":null,"abstract":"Charge transfer at material interfaces governs a wide range of physical properties, from electronic band structures to emergent collective excitations. In two-dimensional (2D) material heterostructures, charge transfer phenomena play important roles in enabling novel quantum phases, proximity effects, and tunable plasmonic responses. One representative charge transfer interface is formed between α-RuCl3, a van der Waals material with high electron affinity, and graphene. Significant charge transfer across this interface induces the formation of charge-transfer plasmon polaritons (CPPs), hybrid excitations between light and charge oscillations. However, previous studies found that as the charge transfer process takes place, α-RuCl3 becomes lossy, which limits the quality factor of CPPs. Here, we investigate CPPs down to 10 K using a home-built scattering-type scanning near-field optical microscope (s-SNOM) optimized for low-temperature measurements. Our study reveals a dramatic suppression of plasmon loss channels below 40 K, contributing to a significant enhancement in the plasmonic quality factor. This reduction in loss is likely attributed to the blue shift of the correlation-induced Mott gap in α-RuCl3 with decreasing temperature, along with the reduction of phonon scattering at low temperature. Our results highlight the potential of using s-SNOM and CPPs to study complex 2D interfaces and reveal correlated electron dynamics in the underlying material.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"73 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144228716","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

Multifunctional Nonvolatile Visible Light Regulator Using Chalcogenide Four-Layer Thin-Film Devices 利用硫系化物四层薄膜器件的多功能非易失性可见光调节器

IF 6.5 1区物理与天体物理

ACS Photonics Pub Date : 2025-06-06 DOI: 10.1021/acsphotonics.4c0138610.1021/acsphotonics.4c01386

Yilin Zhang*, Huabin Zhang, Zhenwei Xie, Wanlong Zhang, Qian Wang*, Ting Lei and Xiaocong Yuan,

{"title":"Multifunctional Nonvolatile Visible Light Regulator Using Chalcogenide Four-Layer Thin-Film Devices","authors":"Yilin Zhang*, Huabin Zhang, Zhenwei Xie, Wanlong Zhang, Qian Wang*, Ting Lei and Xiaocong Yuan, ","doi":"10.1021/acsphotonics.4c0138610.1021/acsphotonics.4c01386","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c01386https://doi.org/10.1021/acsphotonics.4c01386","url":null,"abstract":"As a valuable tool for modulating light fields, conventional amplitude spatial light modulators face limitations, such as slow modulation speeds and mechanical issues. To address these challenges, we propose a novel four-layer thin-film structure composed of Ge2Se2Te5 (GST225) sandwiched between two layers of ZnS:SiO2 on a glass substrate. By tuning the thickness of the upper ZnS:SiO2 layer, the amorphous device exhibits a color shift from purple to red in reflection, achieving full coverage of the visible spectrum. This innovative design simplifies structural coloring, making manufacturing more cost-effective and scalable. Additionally, phase changes can be induced via laser direct write using pulsed or continuous-wave lasers from both sides of the device without a reflective layer, enabling reconfigurability and multilevel adjustments. The GST225-based devices demonstrate a high reflectance contrast between their amorphous and crystallized states (from 2.35% to 19.7% at 658 nm) and significant CIE coordinate displacement exceeding 0.3, indicative of robust modulation capabilities. These features suggest potential as visible light regulators. The devices’ versatility is demonstrated through applying pixelated phase-change patterns in focusing, holography, and display. The phase change pattern can achieve a pixel size of 5 μm, comparable to commercial SLM, covering large areas of up to 3 mm × 3 mm. The underlying mechanisms of these multilevel phase changes are investigated using TEM and Raman techniques, offering insights into their microscopic properties. These advancements promise the devices’ significant applications in critical technologies like LiDAR, optical communication, and neural networks, addressing key challenges, such as slow modulation speeds and mechanical issues.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"12 6","pages":"2923–2931 2923–2931"},"PeriodicalIF":6.5,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144306010","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