Pub Date : 2024-06-13DOI: 10.1038/s41566-024-01444-9
George Zograf, Alexander Yu. Polyakov, Maria Bancerek, Tomasz J. Antosiewicz, Betül Küçüköz, Timur O. Shegai
Second-order nonlinearity in solids gives rise to a plethora of unique physical phenomena ranging from piezoelectricity and optical rectification to optical parametric amplification, spontaneous parametric down-conversion and the generation of entangled photon pairs. Monolayer transition metal dichalcogenides, such as MoS2, exhibit one of the highest known second-order nonlinear coefficients. However, the monolayer nature of these materials prevents the fabrication of resonant objects exclusively from the material itself, necessitating the use of external structures to achieve the optical enhancement of nonlinear processes. Here we exploit the 3R phase of a molybdenum disulfide multilayer for resonant nonlinear nanophotonics. The lack of inversion symmetry—even in the bulk of the material—provides a combination of massive second-order susceptibility, extremely high and anisotropic refractive index in the near-infrared region (n > 4.5) and low absorption losses, making 3R-MoS2 highly attractive for nonlinear nanophotonics. We demonstrate this by fabricating 3R-MoS2 nanodisks of various radii, which support resonant anapole states, and observing substantial (>100-fold) enhancement of second-harmonic generation in a single resonant nanodisk compared with an unpatterned flake of the same thickness. The enhancement is maximized at the spectral overlap between the anapole state of the disk and the material resonance of the second-order susceptibility. Our approach unveils a powerful tool for enhancing the entire spectrum of optical second-order nonlinear processes in nanostructured van der Waals materials, thereby paving the way for nonlinear and quantum high-index transition metal dichalcogenide nanophotonics. Using the 3R phase of molybdenum disulfide nanodisks with various radii, more than 100-fold enhancement of second-harmonic generation can be obtained in a single resonant nanodisk compared with an unpatterned flake of the same thickness.
{"title":"Combining ultrahigh index with exceptional nonlinearity in resonant transition metal dichalcogenide nanodisks","authors":"George Zograf, Alexander Yu. Polyakov, Maria Bancerek, Tomasz J. Antosiewicz, Betül Küçüköz, Timur O. Shegai","doi":"10.1038/s41566-024-01444-9","DOIUrl":"10.1038/s41566-024-01444-9","url":null,"abstract":"Second-order nonlinearity in solids gives rise to a plethora of unique physical phenomena ranging from piezoelectricity and optical rectification to optical parametric amplification, spontaneous parametric down-conversion and the generation of entangled photon pairs. Monolayer transition metal dichalcogenides, such as MoS2, exhibit one of the highest known second-order nonlinear coefficients. However, the monolayer nature of these materials prevents the fabrication of resonant objects exclusively from the material itself, necessitating the use of external structures to achieve the optical enhancement of nonlinear processes. Here we exploit the 3R phase of a molybdenum disulfide multilayer for resonant nonlinear nanophotonics. The lack of inversion symmetry—even in the bulk of the material—provides a combination of massive second-order susceptibility, extremely high and anisotropic refractive index in the near-infrared region (n > 4.5) and low absorption losses, making 3R-MoS2 highly attractive for nonlinear nanophotonics. We demonstrate this by fabricating 3R-MoS2 nanodisks of various radii, which support resonant anapole states, and observing substantial (>100-fold) enhancement of second-harmonic generation in a single resonant nanodisk compared with an unpatterned flake of the same thickness. The enhancement is maximized at the spectral overlap between the anapole state of the disk and the material resonance of the second-order susceptibility. Our approach unveils a powerful tool for enhancing the entire spectrum of optical second-order nonlinear processes in nanostructured van der Waals materials, thereby paving the way for nonlinear and quantum high-index transition metal dichalcogenide nanophotonics. Using the 3R phase of molybdenum disulfide nanodisks with various radii, more than 100-fold enhancement of second-harmonic generation can be obtained in a single resonant nanodisk compared with an unpatterned flake of the same thickness.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":32.3,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41566-024-01444-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141319790","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}
Structured light has proven instrumental in three-dimensional imaging, LiDAR and holographic light projection. Metasurfaces, comprising subwavelength-sized nanostructures, facilitate 180°-field-of-view structured light, circumventing the restricted field of view inherent in traditional optics like diffractive optical elements. However, extant-metasurface-facilitated structured light exhibits sub-optimal performance in downstream tasks, due to heuristic design patterns such as periodic dots that do not consider the objectives of the end application. Here we present 360° structured light, driven by learned metasurfaces. We propose a differentiable framework that encompasses a computationally efficient 180° wave propagation model and a task-specific reconstructor, and exploits both transmission and reflection channels of the metasurface. Leveraging a first-order optimizer within our differentiable framework, we optimize the metasurface design, thereby realizing 360° structured light. We have utilized 360° structured light for holographic light projection and three-dimensional imaging. Specifically, we demonstrate the first 360° light projection of complex patterns, enabled by our propagation model that can be computationally evaluated 50,000× faster than the Rayleigh–Sommerfeld propagation. For three-dimensional imaging, we improve the depth-estimation accuracy by 5.09× in root-mean-square error compared with heuristically designed structured light. Such 360° structured light promises robust 360° imaging and display for robotics, extended-reality systems and human–computer interactions. A single-metasurface-based holographic light projection covering the whole 360° field of view is realized by optimizing the metasurface design through a neural network and applying 360° structured light for holographic light projection and three-dimensional imaging.
{"title":"360° structured light with learned metasurfaces","authors":"Eunsue Choi, Gyeongtae Kim, Jooyeong Yun, Yujin Jeon, Junsuk Rho, Seung-Hwan Baek","doi":"10.1038/s41566-024-01450-x","DOIUrl":"10.1038/s41566-024-01450-x","url":null,"abstract":"Structured light has proven instrumental in three-dimensional imaging, LiDAR and holographic light projection. Metasurfaces, comprising subwavelength-sized nanostructures, facilitate 180°-field-of-view structured light, circumventing the restricted field of view inherent in traditional optics like diffractive optical elements. However, extant-metasurface-facilitated structured light exhibits sub-optimal performance in downstream tasks, due to heuristic design patterns such as periodic dots that do not consider the objectives of the end application. Here we present 360° structured light, driven by learned metasurfaces. We propose a differentiable framework that encompasses a computationally efficient 180° wave propagation model and a task-specific reconstructor, and exploits both transmission and reflection channels of the metasurface. Leveraging a first-order optimizer within our differentiable framework, we optimize the metasurface design, thereby realizing 360° structured light. We have utilized 360° structured light for holographic light projection and three-dimensional imaging. Specifically, we demonstrate the first 360° light projection of complex patterns, enabled by our propagation model that can be computationally evaluated 50,000× faster than the Rayleigh–Sommerfeld propagation. For three-dimensional imaging, we improve the depth-estimation accuracy by 5.09× in root-mean-square error compared with heuristically designed structured light. Such 360° structured light promises robust 360° imaging and display for robotics, extended-reality systems and human–computer interactions. A single-metasurface-based holographic light projection covering the whole 360° field of view is realized by optimizing the metasurface design through a neural network and applying 360° structured light for holographic light projection and three-dimensional imaging.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":32.3,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141304377","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}
Pub Date : 2024-06-10DOI: 10.1038/s41566-024-01457-4
Jicai Zhang, Ziwen Wang, Frank Lengers, Daniel Wigger, Doris E. Reiter, Tilmann Kuhn, Hans Jakob Wörner, Tran Trung Luu
The probing of coherent lattice vibrations in solids has conventionally been carried out using time-resolved transient optical spectroscopy, with which only the relative oscillation amplitude can be obtained. Using time-resolved X-ray techniques, absolute electron–phonon coupling strength could be extracted. However, the complexity of such an experiment renders it impossible to be carried out in conventional laboratories. Here we demonstrate that the electron–phonon, anharmonic phonon–phonon coupling and their relaxation dynamics can be probed in real time using high-harmonic spectroscopy. Our technique is background-free and has extreme sensitivity directly in the energy domain. In combination with the optical deformation potential calculated from density functional perturbation theory and the absolute energy modulation depth, our measurement reveals the maximum displacement of neighbouring oxygen atoms in α-quartz crystal to tens of picometres in real space. By employing a straightforward and robust time-windowed Gabor analysis for the phonon-modulated high-harmonic spectrum, we successfully observe channel-resolved four-phonon scattering processes in such highly nonlinear interactions. Our work opens a new realm for the accurate measurement of coherent phonons and their scattering dynamics, which allows for potential benchmarking ab initio calculations in solids. High-harmonic spectroscopy is employed to investigate the electron–phonon, anharmonic phonon–phonon coupling, and their relaxation dynamics in solids. It reveals the maximum displacement of neighbouring oxygen atoms in α-quartz crystal to tens of picometres in real space.
探测固体中相干晶格振动的传统方法是使用时间分辨瞬态光学光谱，这种方法只能获得相对振幅。使用时间分辨 X 射线技术可以提取绝对的电子-声子耦合强度。然而，这种实验的复杂性使其无法在传统实验室中进行。在这里，我们证明了电子-声子、非谐波声子-声子耦合及其弛豫动力学可以利用高次谐波光谱进行实时探测。我们的技术是无背景的，并且直接在能域中具有极高的灵敏度。结合密度泛函扰动理论计算出的光学形变势和绝对能量调制深度，我们的测量揭示了α石英晶体中相邻氧原子在实际空间中数十皮米的最大位移。通过对声子调制的高次谐波频谱进行直接而稳健的时间窗口 Gabor 分析，我们成功地观测到了这种高度非线性相互作用中的信道分辨四声子散射过程。我们的工作为精确测量相干声子及其散射动力学开辟了一个新的领域，从而有可能为固体中的 ab initio 计算提供基准。
{"title":"High-harmonic spectroscopy probes lattice dynamics","authors":"Jicai Zhang, Ziwen Wang, Frank Lengers, Daniel Wigger, Doris E. Reiter, Tilmann Kuhn, Hans Jakob Wörner, Tran Trung Luu","doi":"10.1038/s41566-024-01457-4","DOIUrl":"10.1038/s41566-024-01457-4","url":null,"abstract":"The probing of coherent lattice vibrations in solids has conventionally been carried out using time-resolved transient optical spectroscopy, with which only the relative oscillation amplitude can be obtained. Using time-resolved X-ray techniques, absolute electron–phonon coupling strength could be extracted. However, the complexity of such an experiment renders it impossible to be carried out in conventional laboratories. Here we demonstrate that the electron–phonon, anharmonic phonon–phonon coupling and their relaxation dynamics can be probed in real time using high-harmonic spectroscopy. Our technique is background-free and has extreme sensitivity directly in the energy domain. In combination with the optical deformation potential calculated from density functional perturbation theory and the absolute energy modulation depth, our measurement reveals the maximum displacement of neighbouring oxygen atoms in α-quartz crystal to tens of picometres in real space. By employing a straightforward and robust time-windowed Gabor analysis for the phonon-modulated high-harmonic spectrum, we successfully observe channel-resolved four-phonon scattering processes in such highly nonlinear interactions. Our work opens a new realm for the accurate measurement of coherent phonons and their scattering dynamics, which allows for potential benchmarking ab initio calculations in solids. High-harmonic spectroscopy is employed to investigate the electron–phonon, anharmonic phonon–phonon coupling, and their relaxation dynamics in solids. It reveals the maximum displacement of neighbouring oxygen atoms in α-quartz crystal to tens of picometres in real space.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":32.3,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141299093","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}
Pub Date : 2024-06-10DOI: 10.1038/s41566-024-01454-7
Yang Liu, Zheru Qiu, Xinru Ji, Andrea Bancora, Grigory Lihachev, Johann Riemensberger, Rui Ning Wang, Andrey Voloshin, Tobias J. Kippenberg
Erbium-doped fibre lasers exhibit high coherence and low noise as required for fibre-optic sensing, gyroscopes, LiDAR and optical frequency metrology. Endowing erbium-based gain in photonic integrated circuits can provide a basis for miniaturizing low-noise fibre lasers to the chip-scale form factor and enable large-volume applications. Although major progress has been made on integrated lasers based on silicon photonics with III–V gain media, realizing low-noise integrated erbium-based lasers has, however, remained unachievable. Recent advances in photonic-integrated-circuit-based high-power erbium-doped amplifiers make a new class of rare-earth-ion-based lasers possible. Here we demonstrate a fully integrated erbium laser that achieves 50 Hz intrinsic linewidth, high output power up to 17 mW, low intensity noise and integration of a III–V pump laser, approaching the performance of fibre lasers and state-of-the-art semiconductor extended-cavity lasers. The laser circuit is based on an erbium-ion-implanted ultralow-loss silicon nitride photonic integrated circuit, with an intracavity microring-based Vernier filter that enables >40 nm wavelength tunability within the optical C and L bands and attains a 70 dB side-mode suppression ratio. This new class of low-noise, tunable integrated laser could find applications in LiDAR, microwave photonics, optical frequency synthesis and free-space communications, with wavelength extendibility using different rare-earth ion species. A fully hybrid integrated erbium-doped photonic integrated waveguide laser with wide tuning of 40 nm, side-mode suppression ratio of >70 dB and output power up to 17 mW is demonstrated, achieving not only footprint reduction but also the long-anticipated fibre-laser coherence.
掺铒光纤激光器具有光纤传感、陀螺仪、激光雷达和光学频率计量所需的高相干性和低噪声。在光子集成电路中加入掺铒增益，可为低噪声光纤激光器小型化到芯片级提供基础，并实现大批量应用。虽然基于硅光子技术和 III-V 增益介质的集成激光器已取得重大进展，但实现低噪声铒基集成激光器仍然遥不可及。基于光子集成电路的高功率掺铒放大器的最新进展，使新型稀土离子激光器成为可能。在这里，我们展示了一种完全集成的铒激光器，它的本征线宽为 50 Hz，输出功率高达 17 mW，强度噪声低，并集成了 III-V 泵浦激光器，性能接近光纤激光器和最先进的半导体扩展腔激光器。该激光器电路基于铒离子植入式超低损耗氮化硅光子集成电路，腔内有一个基于微孔的 Vernier 滤波器，可在光学 C 和 L 波段内实现 40 nm 波长调谐，并达到 70 dB 的边模抑制比。这种新型低噪声、可调谐集成激光器可应用于激光雷达、微波光子学、光学频率合成和自由空间通信，并可使用不同的稀土离子扩展波长。
{"title":"A fully hybrid integrated erbium-based laser","authors":"Yang Liu, Zheru Qiu, Xinru Ji, Andrea Bancora, Grigory Lihachev, Johann Riemensberger, Rui Ning Wang, Andrey Voloshin, Tobias J. Kippenberg","doi":"10.1038/s41566-024-01454-7","DOIUrl":"10.1038/s41566-024-01454-7","url":null,"abstract":"Erbium-doped fibre lasers exhibit high coherence and low noise as required for fibre-optic sensing, gyroscopes, LiDAR and optical frequency metrology. Endowing erbium-based gain in photonic integrated circuits can provide a basis for miniaturizing low-noise fibre lasers to the chip-scale form factor and enable large-volume applications. Although major progress has been made on integrated lasers based on silicon photonics with III–V gain media, realizing low-noise integrated erbium-based lasers has, however, remained unachievable. Recent advances in photonic-integrated-circuit-based high-power erbium-doped amplifiers make a new class of rare-earth-ion-based lasers possible. Here we demonstrate a fully integrated erbium laser that achieves 50 Hz intrinsic linewidth, high output power up to 17 mW, low intensity noise and integration of a III–V pump laser, approaching the performance of fibre lasers and state-of-the-art semiconductor extended-cavity lasers. The laser circuit is based on an erbium-ion-implanted ultralow-loss silicon nitride photonic integrated circuit, with an intracavity microring-based Vernier filter that enables >40 nm wavelength tunability within the optical C and L bands and attains a 70 dB side-mode suppression ratio. This new class of low-noise, tunable integrated laser could find applications in LiDAR, microwave photonics, optical frequency synthesis and free-space communications, with wavelength extendibility using different rare-earth ion species. A fully hybrid integrated erbium-doped photonic integrated waveguide laser with wide tuning of 40 nm, side-mode suppression ratio of >70 dB and output power up to 17 mW is demonstrated, achieving not only footprint reduction but also the long-anticipated fibre-laser coherence.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":32.3,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141298992","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}
Pub Date : 2024-06-10DOI: 10.1038/s41566-024-01445-8
Roni Shaashoua, Lir Kasuker, Mor Kishner, Tal Levy, Barak Rotblat, Anat Ben-Zvi, Alberto Bilenca
Optical imaging techniques with mechanical contrast, including passive microrheology, optical coherence elastography and Brillouin microscopy, are critical for material and biological discovery owing to their less perturbative nature compared with traditional mechanical imaging methods. An emerging optical microscopy approach for mechanical imaging is stimulated Brillouin scattering microscopy, which has been shown to be useful for biomechanical imaging with high sensitivity and specificity. However, the excitation energy used is high and the temporal resolution remains limited by the need to acquire full spectra. Here we develop Brillouin gain microscopy that detects the Brillouin gain at a specific mechanically contrasting frequency corresponding to a Brillouin acoustic-vibrational mode of interest in the sample. Brillouin gain microscopy affords a 200-fold improvement in temporal resolution compared with stimulated Brillouin scattering microscopy, down to 100 μs at excitation energy as low as 23 μJ. Using Brillouin gain microscopy, we demonstrate cross-sectional, all-optical mechanical imaging of materials as well as of the structure and dynamics in living systems with low excitation energy and at high temporal resolution. By measuring the Brillouin gain only at mechanical frequencies of interest, Brillouin gain microscopy enables Brillouin imaging with a temporal resolution of 100 µs with excitation energies of 23 µJ on biological samples.
{"title":"Brillouin gain microscopy","authors":"Roni Shaashoua, Lir Kasuker, Mor Kishner, Tal Levy, Barak Rotblat, Anat Ben-Zvi, Alberto Bilenca","doi":"10.1038/s41566-024-01445-8","DOIUrl":"10.1038/s41566-024-01445-8","url":null,"abstract":"Optical imaging techniques with mechanical contrast, including passive microrheology, optical coherence elastography and Brillouin microscopy, are critical for material and biological discovery owing to their less perturbative nature compared with traditional mechanical imaging methods. An emerging optical microscopy approach for mechanical imaging is stimulated Brillouin scattering microscopy, which has been shown to be useful for biomechanical imaging with high sensitivity and specificity. However, the excitation energy used is high and the temporal resolution remains limited by the need to acquire full spectra. Here we develop Brillouin gain microscopy that detects the Brillouin gain at a specific mechanically contrasting frequency corresponding to a Brillouin acoustic-vibrational mode of interest in the sample. Brillouin gain microscopy affords a 200-fold improvement in temporal resolution compared with stimulated Brillouin scattering microscopy, down to 100 μs at excitation energy as low as 23 μJ. Using Brillouin gain microscopy, we demonstrate cross-sectional, all-optical mechanical imaging of materials as well as of the structure and dynamics in living systems with low excitation energy and at high temporal resolution. By measuring the Brillouin gain only at mechanical frequencies of interest, Brillouin gain microscopy enables Brillouin imaging with a temporal resolution of 100 µs with excitation energies of 23 µJ on biological samples.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":32.3,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41566-024-01445-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141298931","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}
Pub Date : 2024-06-07DOI: 10.1038/s41566-024-01456-5
Zixi Li, Xinghan Guo, Yu Jin, Francesco Andreoli, Anil Bilgin, David D. Awschalom, Nazar Delegan, F. Joseph Heremans, Darrick Chang, Giulia Galli, Alexander A. High
A resonantly excited atomic optical dipole simultaneously generates propagating (far) and evanescent (near) electromagnetic fields. The near-field component diverges in the limit of decreasing distance, indicating an optical antenna with the potential for enormous near-field intensity enhancement. In principle, any atomic optical dipole in a solid can serve as an optical antenna; however, most of them suffer from environmentally induced decoherence that largely mitigates field enhancement. Here we demonstrate that germanium vacancy centres in diamond—optically coherent atom-like dipoles in a solid—are exemplary antennas. We measure up to million-fold optical intensity enhancement in the near-field of resonantly excited germanium vacancies. In addition to the rich applications already developed for conventional nanoantennas, atomic antennas in the solid state promise to yield interesting new applications in spectroscopy, sensing and quantum science. As one concrete example, we use germanium vacancy antennas to detect and control the charge state of nearby carbon vacancies and generate measurable fluorescence from individual vacancies through Förster resonance energy transfer.
{"title":"Atomic optical antennas in solids","authors":"Zixi Li, Xinghan Guo, Yu Jin, Francesco Andreoli, Anil Bilgin, David D. Awschalom, Nazar Delegan, F. Joseph Heremans, Darrick Chang, Giulia Galli, Alexander A. High","doi":"10.1038/s41566-024-01456-5","DOIUrl":"https://doi.org/10.1038/s41566-024-01456-5","url":null,"abstract":"<p>A resonantly excited atomic optical dipole simultaneously generates propagating (far) and evanescent (near) electromagnetic fields. The near-field component diverges in the limit of decreasing distance, indicating an optical antenna with the potential for enormous near-field intensity enhancement. In principle, any atomic optical dipole in a solid can serve as an optical antenna; however, most of them suffer from environmentally induced decoherence that largely mitigates field enhancement. Here we demonstrate that germanium vacancy centres in diamond—optically coherent atom-like dipoles in a solid—are exemplary antennas. We measure up to million-fold optical intensity enhancement in the near-field of resonantly excited germanium vacancies. In addition to the rich applications already developed for conventional nanoantennas, atomic antennas in the solid state promise to yield interesting new applications in spectroscopy, sensing and quantum science. As one concrete example, we use germanium vacancy antennas to detect and control the charge state of nearby carbon vacancies and generate measurable fluorescence from individual vacancies through Förster resonance energy transfer.</p>","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141287151","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}
Pub Date : 2024-06-06DOI: 10.1038/s41566-024-01452-9
Vasily V. Temnov, Paolo Vavassori
Ultrafast optical experiments using narrow-bandwidth tunable IR laser pulses enable nonvolatile all-optical switching of ferroelectric polarization in BaTiO3 in the epsilon-near-zero regime.
{"title":"All-optical polarization switching in ferroelectrics","authors":"Vasily V. Temnov, Paolo Vavassori","doi":"10.1038/s41566-024-01452-9","DOIUrl":"10.1038/s41566-024-01452-9","url":null,"abstract":"Ultrafast optical experiments using narrow-bandwidth tunable IR laser pulses enable nonvolatile all-optical switching of ferroelectric polarization in BaTiO3 in the epsilon-near-zero regime.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141264881","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}
Pub Date : 2024-06-06DOI: 10.1038/s41566-024-01448-5
Giampaolo Pitruzzello
Fluorescence super-resolution microscopy continues to offer new prospects and opportunities to tackle biological questions.
荧光超分辨率显微技术不断为解决生物问题提供新的前景和机遇。
{"title":"Single molecule localization more precise than ever","authors":"Giampaolo Pitruzzello","doi":"10.1038/s41566-024-01448-5","DOIUrl":"10.1038/s41566-024-01448-5","url":null,"abstract":"Fluorescence super-resolution microscopy continues to offer new prospects and opportunities to tackle biological questions.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141264904","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}
Pub Date : 2024-06-06DOI: 10.1038/s41566-024-01447-6
Xiao-Jun Wang
Advancements in laser-driven ceramic phosphors yield a high-power broadband near-infrared light source which suits applications in next-generation spectroscopy.
激光驱动陶瓷荧光粉的进步产生了适合新一代光谱学应用的高功率宽带近红外光源。
{"title":"Ceramic phosphor creates broadband infrared source","authors":"Xiao-Jun Wang","doi":"10.1038/s41566-024-01447-6","DOIUrl":"10.1038/s41566-024-01447-6","url":null,"abstract":"Advancements in laser-driven ceramic phosphors yield a high-power broadband near-infrared light source which suits applications in next-generation spectroscopy.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141264846","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}
Pub Date : 2024-06-06DOI: 10.1038/s41566-024-01438-7
Maria Kafesaki, Thomas Koschny, Martin Wegener
We had all been wondering “where is Costas?” and now we learned that we shall not see him again. We have lost a good friend and leader in the photonics community.
{"title":"Costas Soukoulis (1951–2024)","authors":"Maria Kafesaki, Thomas Koschny, Martin Wegener","doi":"10.1038/s41566-024-01438-7","DOIUrl":"10.1038/s41566-024-01438-7","url":null,"abstract":"We had all been wondering “where is Costas?” and now we learned that we shall not see him again. We have lost a good friend and leader in the photonics community.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":null,"pages":null},"PeriodicalIF":35.0,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41566-024-01438-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141264882","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：