Nature Photonics最新文献_第7页

Brillouin laser-driven terahertz oscillator up to 3 THz with femtosecond-level timing jitter 高达 3 THz 的布里渊激光驱动太赫兹振荡器，具有飞秒级定时抖动

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-09-13 DOI: 10.1038/s41566-024-01513-z

Brendan M. Heffernan, James Greenberg, Takashi Hori, Tatsuya Tanigawa, Antoine Rolland

{"title":"Brillouin laser-driven terahertz oscillator up to 3 THz with femtosecond-level timing jitter","authors":"Brendan M. Heffernan, James Greenberg, Takashi Hori, Tatsuya Tanigawa, Antoine Rolland","doi":"10.1038/s41566-024-01513-z","DOIUrl":"10.1038/s41566-024-01513-z","url":null,"abstract":"The terahertz (THz) frequency range, spanning from 0.1 to 10.0 THz, is a field ripe for innovation with vast, developing potential in areas like wireless communication and molecular spectroscopy. Our work introduces a dual-wavelength laser design that utilizes stimulated Brillouin scattering in an optical fibre cavity to effectively generate two highly coherent optical Stokes waves with inherently mitigated differential phase noise. To guarantee robust operation, the Stokes waves are optically injected into their respective pump lasers, which also serves to greatly improve the resulting coherence. The frequency difference between the two wavelengths is converted into THz waves through a uni-travelling-carrier photodiode. This innovative design facilitates the generation of THz waves with phase noise levels of less than –100 dBc Hz–1, translating to timing noise below 10 as Hz–1/2 at 10 kHz Fourier frequency, over a carrier frequency range from 300 GHz to 3 THz. This development in phase noise reduction establishes a new benchmark in the spectral purity of tunable THz sources. Such advances are pivotal for applications to move beyond oscillator constraints. A Brillouin laser-driven terahertz oscillator is developed. The phase noise level of the generated terahertz waves is less than –100 dBc Hz–1, translating to timing noise below 10 as Hz–1/2 at 10 kHz Fourier frequency, over a carrier frequency range from 300 GHz to 3 THz.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"18 12","pages":"1263-1268"},"PeriodicalIF":32.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175035","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

Positive-feedback organic light-emitting diodes and upconverters 正反馈有机发光二极管和上变频器

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-09-13 DOI: 10.1038/s41566-024-01520-0

Raju Lampande, Jon-Paul S. DesOrmeaux, Adrian Pizano, Jonathon R. Schrecengost, Robert Cawthorn, Hunter Bowman, Alex Grede, Urcan Guler, John W. Hamer, Noel C. Giebink

{"title":"Positive-feedback organic light-emitting diodes and upconverters","authors":"Raju Lampande, Jon-Paul S. DesOrmeaux, Adrian Pizano, Jonathon R. Schrecengost, Robert Cawthorn, Hunter Bowman, Alex Grede, Urcan Guler, John W. Hamer, Noel C. Giebink","doi":"10.1038/s41566-024-01520-0","DOIUrl":"10.1038/s41566-024-01520-0","url":null,"abstract":"Organic light-emitting diodes (OLEDs) are among the most successful organic electronic devices so far. They currently dominate the mobile display market and are expanding into a broad range of lighting, automotive and wearable device applications. Here we introduce a new class of organic light-emitting device that exhibits bistability owing to positive photonic feedback between an organic photodiode and a tandem OLED integrated in the same layer stack. These unusual devices display giant hysteresis in both their current and light emission, and respond sensitively to low-level external illumination, enabling optoelectronic upconversion with 100-fold photon-to-photon gain. Given their compatibility with existing OLED materials and manufacturing lines, these devices could find near-term use in new types of display and upconversion imaging applications, as well as offer a new platform for neuromorphic optoelectronics and image recognition. Integrating an organic photodiode with a tandem OLED enables positive photonic feedback that results in bistable behaviour. Devices show giant hysteresis in their current–voltage–luminance characteristic and upconversion of near-infrared to visible light with 100-fold photon-to-photon gain.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"18 12","pages":"1299-1304"},"PeriodicalIF":32.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175033","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-brightness transition metal-sensitized lanthanide near-infrared luminescent nanoparticles 高亮度过渡金属敏化镧系近红外发光纳米粒子

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-09-13 DOI: 10.1038/s41566-024-01517-9

Jiang Ming, Ying Chen, Han Miao, Yong Fan, Shangfeng Wang, Zihan Chen, Zhenhao Guo, Zhixiu Guo, Luyin Qi, Xusheng Wang, Baofeng Yun, Peng Pei, Haisheng He, Hongxin Zhang, Yun Tang, Dongyuan Zhao, Gary Ka-Leung Wong, Jean-Claude G. Bünzli, Fan Zhang

{"title":"High-brightness transition metal-sensitized lanthanide near-infrared luminescent nanoparticles","authors":"Jiang Ming, Ying Chen, Han Miao, Yong Fan, Shangfeng Wang, Zihan Chen, Zhenhao Guo, Zhixiu Guo, Luyin Qi, Xusheng Wang, Baofeng Yun, Peng Pei, Haisheng He, Hongxin Zhang, Yun Tang, Dongyuan Zhao, Gary Ka-Leung Wong, Jean-Claude G. Bünzli, Fan Zhang","doi":"10.1038/s41566-024-01517-9","DOIUrl":"10.1038/s41566-024-01517-9","url":null,"abstract":"The demand for near-infrared (700–1,700 nm) materials in optical communications, laser sources and biological imaging applications has led to extensive research on lanthanide-doped nanoparticles, owing to their nanostructure modulation and interface property tunability. However, the low molar extinction coefficient of conventional lanthanide sensitizers limits the brightness of lanthanide near-infrared nanoparticles for applications in low-power excitation scenarios. Here we introduce Na3CrF6, a new crystalline nanoparticle that serves as both sensitizer and host for high-brightness near-infrared emission from lanthanide activators (Er3+, Tm3+, Yb3+ or Nd3+). We demonstrate an increase in brightness of up to 370 times compared with the most intense conventional lanthanide-sensitized nanoparticles. This discovery is also validated for other lanthanide-doped nanoparticles sensitized with low-cost transition metals (Mn2+ or Ni2+). Our transition metal-based nanoparticles represent a powerful toolbox to enable high signal-to-noise-ratio labelling and imaging with low-power excitation sources such as white light-emitting diode or persistent luminescence materials. This work paves the way for next-generation high-brightness near-infrared luminescence systems, suited for a wide range of low-illumination excitation applications. Cr3+-sensitized lanthanide-doped nanoparticles afford high-brightness luminescence in the near-infrared region for applications in in vivo non-invasive bioimaging.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"18 12","pages":"1254-1262"},"PeriodicalIF":32.3,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142175034","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

Dual-comb spectroscopy over a 100 km open-air path 在 100 千米露天路径上进行双梳光谱分析

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-09-12 DOI: 10.1038/s41566-024-01525-9

Jin-Jian Han, Wei Zhong, Ruo-Can Zhao, Ting Zeng, Min Li, Jian Lu, Xin-Xin Peng, Xi-Ping Shi, Qin Yin, Yong Wang, Ali Esamdin, Qi Shen, Jian-Yu Guan, Lei Hou, Ji-Gang Ren, Jian-Jun Jia, Yu Wang, Hai-Feng Jiang, Xiang-Hui Xue, Qiang Zhang, Xian-Kang Dou, Jian-Wei Pan

{"title":"Dual-comb spectroscopy over a 100 km open-air path","authors":"Jin-Jian Han, Wei Zhong, Ruo-Can Zhao, Ting Zeng, Min Li, Jian Lu, Xin-Xin Peng, Xi-Ping Shi, Qin Yin, Yong Wang, Ali Esamdin, Qi Shen, Jian-Yu Guan, Lei Hou, Ji-Gang Ren, Jian-Jun Jia, Yu Wang, Hai-Feng Jiang, Xiang-Hui Xue, Qiang Zhang, Xian-Kang Dou, Jian-Wei Pan","doi":"10.1038/s41566-024-01525-9","DOIUrl":"10.1038/s41566-024-01525-9","url":null,"abstract":"Dual-comb spectroscopy (DCS) provides broadband, high-resolution, high-sensitivity amplitude and phase spectra within a short measurement time, thus holding promises for atmospheric spectroscopy. However, previous research has been limited to measuring over open-air paths of about 20 km. Here, by developing a bistatic set-up using time–frequency dissemination and high-power optical frequency combs, we implement DCS over a 113 km turbulent horizontal open-air path. We successfully measure the absorbance spectra of CO2 and H2O with a 7 nm spectral bandwidth and a 10 kHz frequency accuracy, and achieve a sensing precision of <2 ppm in 5 min and <0.6 ppm in 36 min for CO2. We anticipate our system to find immediate applications in the monitoring of urban greenhouse gas and gaseous pollutants emission. Our technology may also be extended to satellite-based DCS for greenhouse gas monitoring and calibration measurements. Dual-comb spectroscopy with time–frequency dissemination and high-power frequency combs enables sensing CO2 and H2O over a 113 km turbulent open-air path, with a sensing precision as high as 2 parts per million of CO2.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"18 11","pages":"1195-1202"},"PeriodicalIF":32.3,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142170783","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

Plasmonics commercialized? 等离子体技术商业化？

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-09-04 DOI: 10.1038/s41566-024-01523-x

Rachel Won

引用次数: 0

Micro-optics enables directional thermal displays 微光学技术实现定向热显示

IF 32.3 1区物理与天体物理

Nature Photonics Pub Date : 2024-09-04 DOI: 10.1038/s41566-024-01515-x

David Pile

引用次数: 0

Photonic solutions help fight climate crisis 光子解决方案有助于应对气候危机