Nature Photonics最新文献

Intrinsic backward emission of coherent Raman photons from homogeneous media 均匀介质中相干拉曼光子的本征后向发射

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2026-10-19 DOI: 10.1038/s41566-026-01995-z

Jitendra Nath Acharyya, Gina Benni, Anne Sentenac, Hervé Rigneault, Sandro Heuke

{"title":"Intrinsic backward emission of coherent Raman photons from homogeneous media","authors":"Jitendra Nath Acharyya, Gina Benni, Anne Sentenac, Hervé Rigneault, Sandro Heuke","doi":"10.1038/s41566-026-01995-z","DOIUrl":"https://doi.org/10.1038/s41566-026-01995-z","url":null,"abstract":"In homogeneous materials, scattered light propagates predominantly in the forward direction; thus, collecting signal on the illumination side often relies on interfaces, disorder or multiple scattering. Nonlinear wave mixing can relax this constraint by combining the directions of the driving fields. If the generated wavelength is longer than the driving wavelengths, intrinsic backward emission can become efficient. Here we exploit this regime using coherent Stokes Raman scattering to generate signal directly into the backward hemisphere. Simulations pinpoint high-numerical aperture geometries and polarization states that maximize backward emission, and experiments confirm backward signals from liquids and tissues with detected levels approaching the strength of forward-detected coherent Raman signals. Because the generated signal originates at the focus and remains refocusable, it enables coherent Raman microscopy with same-side confocal collection compatible with fibre coupling and spectrometers when transmission access is impractical. The approach is particularly relevant and beneficial for samples on opaque substrates, thick specimens, tissue biopsies and fibre- or spectrometer-based implementations.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"11 1","pages":""},"PeriodicalIF":35.0,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218199","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

Controllable transient coherent state reproduction in lasers 激光中的可控瞬态相干态再现

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2026-10-19 DOI: 10.1038/s41566-026-02034-7

Wenhao Zhu, Laiyang Dang, Yihuan Shi, Feng Li, Qiwen Zhan, Dongmei Huang, P. K. A. Wai

{"title":"Controllable transient coherent state reproduction in lasers","authors":"Wenhao Zhu, Laiyang Dang, Yihuan Shi, Feng Li, Qiwen Zhan, Dongmei Huang, P. K. A. Wai","doi":"10.1038/s41566-026-02034-7","DOIUrl":"https://doi.org/10.1038/s41566-026-02034-7","url":null,"abstract":"Current research on coherent lasers typically focuses on configurations that maintain a long-term stable state, often ignoring transients during the laser build-up stage. Here we propose and experimentally demonstrate that the transient coherent state (TCS)—occurring during the build-up of laser signals from amplified spontaneous emission in a non-equilibrium long-fibre laser—can be harnessed by periodically resetting the pump power. Using a Fourier-domain mode-locked (FDML) laser as a model, we show that an FDML laser operating in the TCS achieves an instantaneous linewidth at the kilohertz level. This represents a seven-orders-of-magnitude improvement over conventional FDML lasers. Furthermore, the residual phase jitter within the TCS can serve as an internal reference for self-regulation. By leveraging the unique combination of transient coherence and long-term chaos, we demonstrate a novel hybrid light detection and ranging scheme that features micrometre-scale resolution and a kilometre-scale measurable range. Finally, we apply the TCS concept to mitigate multi-longitudinal-mode operation in a self-injection-locked distributed-feedback laser, demonstrating that the TCS is equally valuable for lasers with long-term stable states.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"73 1","pages":""},"PeriodicalIF":35.0,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218195","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

Perovskite chiral multiple quantum wells with extended spin lifetime via efficient spin cascade 利用高效自旋级联延长自旋寿命的钙钛矿手性多量子阱

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2026-10-15 DOI: 10.1038/s41566-026-02027-6

Jian Qiu,Yuling Huang,Pui Ying Wong,Kin Ting Chang,Jie Xue,Zhongwei Chen,Zhiyu Wang,Jingwen Yao,Zhi-Gang Yu,Xihan Chen,Haipeng Lu

引用次数: 0

Intermolecular decoupling of C60 suppresses interfacial recombination in perovskite solar cells C60的分子间解耦抑制钙钛矿太阳能电池的界面重组

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2026-10-13 DOI: 10.1038/s41566-026-02030-x

Tao Wang,Ran Luo,Jinxi Chen,Jingcong Hu,Xi Wang,Richard Gundermann,Pengshuai Wang,Zijing Dong,Zhenhuang Su,Zihao Zhu,Xinyi Du,Jia Li,Hao Tian,Xiao Guo,Yuduan Wang,Ming Lin,Zhenxiang Xing,Mengfei Wu,Rong Ji,Zhenrong Jia,Zhizhong Ge,Ruitian Sun,Ling Kai Lee,Qilin Zhou,Chao Luo,Lin Zhang,Shunchang Liu,Chuanxiao Xiao,Xingyu Gao,Xudong Yang,Felix Lang,Yi Hou

引用次数: 0

Nonlinear circular dichroism reveals the local Berry curvature 非线性圆二色性揭示了局部贝里曲率

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2026-10-13 DOI: 10.1038/s41566-026-02025-8

Nele Tornow,Paul Herrmann,Clemens Schneider,Ferdinand Evers,Jan Wilhelm,Giancarlo Soavi

{"title":"Nonlinear circular dichroism reveals the local Berry curvature","authors":"Nele Tornow,Paul Herrmann,Clemens Schneider,Ferdinand Evers,Jan Wilhelm,Giancarlo Soavi","doi":"10.1038/s41566-026-02025-8","DOIUrl":"https://doi.org/10.1038/s41566-026-02025-8","url":null,"abstract":"Abstract The transfer of angular momentum between light and crystalline solids during nonlinear optical processes is typically interpreted in terms of angular momentum conservation and the rotational symmetry of the crystal lattice. However, these cornerstone principles rely on macroscopic symmetry arguments, providing little insight into the microscopic origin of angular momentum transfer. Here we show that changes in the spin angular momentum of light in high-harmonic generation processes, which we probe via nonlinear circular dichroism, are directly proportional to the local Berry curvature at a single optical resonance, therefore establishing a link between nonlinear light–matter interactions and the quantum geometry of electronic states. We demonstrate this relationship using second-harmonic generation in monolayer WSe 2 , using circularly polarized light to break time-reversal symmetry and lift the degeneracy between the valleys. The resulting second-harmonic circular dichroism can be controlled through the intensity and helicity of the circularly polarized light, hence offering a method for the control and readout of the optically probed Berry curvature.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"17 1","pages":""},"PeriodicalIF":35.0,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149210045","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

Solid-state emissive acceptors enable thermally accessible radiative pathways for efficient organic solar cells 固态发射受体为高效的有机太阳能电池提供了热可达的辐射途径

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2026-10-12 DOI: 10.1038/s41566-026-02009-8

Yingze Zhang,Fei Han,Rongkun Zhou,Zihao Deng,Jiehao Fu,Mingjie Rong,Ho Ming Ng,Yuang Fu,Xin Ding,Xianghao Zeng,Jichen Yi,Hao Xia,Joshua Yuk Lin Lai,Ruijie Ma,Chao Li,Xinhui Lu,Jinyang Yu,Haiming Zhu,Jun Liu,Feng Liu,Zilong Zheng,Feng He,Lei Zhu,He Yan,Gang Li,Sai Ho Pun

引用次数: 0

Stable deep-blue organic light-emitting diodes with reduced efficiency roll-off via accelerated exciton utilization 稳定的深蓝色有机发光二极管，通过加速激子利用降低效率滚降

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2026-10-12 DOI: 10.1038/s41566-026-02029-4

Tianyu Huang,Hai Zhang,Qi Wang,Biwen Li,Minqiang Mai,Yang Xiao,Hugo Bronstein,Richard Friend,Lian Duan,Dongdong Zhang

引用次数: 0

Phase control of interfering stimulated Raman pathways in the XUV regime XUV状态下干扰受激拉曼通路的相位控制

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2026-10-09 DOI: 10.1038/s41566-026-02024-9

Ulli Eichmann,Stefanos Carlström,Serguei Patchkovskii,Stefan Eisebitt,Jan-Erik Rubensson,Johan Söderström,Jochen Mikosch,Enrico Allaria,Alexander Brynes,Carlo Callegari,Michele Di Fraia,Michele Manfredda,Nitish Pal,Giovanni Perosa,Oksana Plekan,Alberto Simoncig,Matthieu Génévriez

{"title":"Phase control of interfering stimulated Raman pathways in the XUV regime","authors":"Ulli Eichmann,Stefanos Carlström,Serguei Patchkovskii,Stefan Eisebitt,Jan-Erik Rubensson,Johan Söderström,Jochen Mikosch,Enrico Allaria,Alexander Brynes,Carlo Callegari,Michele Di Fraia,Michele Manfredda,Nitish Pal,Giovanni Perosa,Oksana Plekan,Alberto Simoncig,Matthieu Génévriez","doi":"10.1038/s41566-026-02024-9","DOIUrl":"https://doi.org/10.1038/s41566-026-02024-9","url":null,"abstract":"Abstract Coherent control uses interference between quantum pathways to enhance or suppress transitions to a target quantum state. In stimulated Raman excitation, such control can be achieved through interference between two indistinguishable pathways connecting the same initial and final states, with the relative phase between the pathways modulating the population transfer to the final state. Extending this strategy to the extreme ultraviolet (XUV) and X-ray regimes would enable control of ultrafast electronic dynamics and site-selective core excitations. However, Raman coupling at short wavelengths competes with photoionization and intermediate-state decay, whereas intense fields with stable and adjustable relative phases remain difficult to produce. Here we use two-colour pulses from a seeded coherent free-electron laser to excite helium from its ground state to a bound metastable state via stimulated XUV Raman excitation. We implement phase-coherent control by creating two interfering Raman pathways through the ionization continuum and modulate the transferred population by varying their relative phases. Blocking one pathway removes the modulation, confirming its interferometric origin, and time-dependent Schrödinger equation calculations reproduce the measured phase dependence. Our results establish phase-controlled stimulated Raman excitation in the XUV regime, providing a strategy for the coherent control of atomic and molecular processes at short wavelengths.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"42 1","pages":""},"PeriodicalIF":35.0,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149150899","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

High-entropy molecular contacts enable high-efficiency and stable perovskite solar cells 高熵分子接触使钙钛矿太阳能电池高效稳定

IF 35 1区物理与天体物理

Nature Photonics Pub Date : 2026-10-09 DOI: 10.1038/s41566-026-02028-5

Deng Wang,Mingqian Chen,Jiacong Feng,Qian Li,Chun-To Wong,Guanghui Lei,Qing Jiang,Tonghui Wang,Wenlin Jiang,Alex K.-Y. Jen

引用次数: 0

Delaying light from quantum dots 延迟量子点发出的光

IF 38.1 1区物理与天体物理

Nature Photonics Pub Date : 2026-09-30 DOI: 10.1038/s41566-026-02015-w

Eran Rabani

引用次数: 0