Results 131 to 140 of about 882,801 (311)

Intensity fluctuations in steady state superradiance

, 2010
Alkaline-earth like atoms with ultra-narrow optical transitions enable superradiance in steady state. The emitted light promises to have an unprecedented stability with a linewidth as narrow as a few millihertz.
C. W. Gardiner, D. F. Walls, D. Meiser, L. Mandel, M. J. Holland, R. Loudon   +5 more
core   +1 more source

Navigating the Ethereal Tightrope: The Nanogenerator Manipulates Neurons for Immune Equilibrium

Advanced Science, EarlyView.
This review explores how nanogenerators modulate neuroimmune responses, offering innovative strategies for treating neurological disorders. By interfacing with neural pathways, they enable precise control of immune activity, especially via vagus nerve stimulation.
Jia Du, Rui Deng, Ya Wu, Hong‐Xia Ren, Zong‐Hong Lin, Yang‐Bao Miao   +5 more
wiley   +1 more source

A 100 Hz, 4.71 mJ, 3.8 μm, narrow-linewidth, electro-optic Q-switched self-optical parametric oscillator based on Nd:MgO:PPLN crystal

High Power Laser Science and Engineering
This paper introduces a high single-pulse energy, narrow-linewidth mid-infrared self-optical parametric oscillator (mid-IR SOPO) with a cavity length of 120 mm and a Nd:MgO:PPLN crystal.
Rui Zhao, Shuang Wu, Le Zhang, Hang Liu, Zijian Wang, Chao Wang, Yongji Yu, Guangyong Jin   +7 more
doaj   +1 more source

Stable Single-Longitudinal-Mode Fiber Laser With Ultra-Narrow Linewidth Based on Convex-Shaped Fiber Ring and Sagnac Loop

IEEE Access, 2019
In this investigation, a convex-shaped fiber ring (CSFR)-based single-longitudinal-mode (SLM) erbium-doped fiber laser (EDFL) is proposed and experimentally verified. The CSFR, composed of only two optical couplers and forming a double-ring architecture,
Zhengkang Wang, Jianming Shang, Kuanlin Mu, Song Yu, Yaojun Qiao   +4 more
semanticscholar   +1 more source

Visualizing Strain‐Coupled Cryogenic Phase Transitions and Defect Dynamics in Perovskite Quantum Dots Using In Situ STEM

Advanced Science, EarlyView.
Cryogenic cooling induces an orthorhombic‐to‐monoclinic phase transition in CsPbBr3 quantum dots, accompanied by pronounced strain localization at surfaces and interfaces. Multimodal in situ STEM directly visualize reversible defect healing during moderate cryogenic treatment and irreversible degradation upon prolonged exposure, revealing the intrinsic
Xinjuan Li, Zhao Jiang, Si Chen, Yi Tang, Bofeng Xue, Tianhao Wu, Yang Lu, Xavier Moya, Akshay Rao, Zhongzheng Yu, Caterina Ducati   +10 more
wiley   +1 more source

Narrow-linewidth, tunable external cavity dual-band diode lasers through InP/GaAs-Si3N4 hybrid integration.

Optics Express, 2019
We demonstrate hybridly integrated narrow-linewidth, tunable diode lasers in the InP/GaAs-Si3N4 platform. Silicon nitride photonic integrated circuits, instead of silicon waveguides that suffer from high optical loss near 1 µm, are chosen to build a ...
Yeyu Zhu, Lin Zhu
semanticscholar   +1 more source

Manipulation of Emergent Collective Excitations via Composition Control in Mixed MPX3 Correlated 2D Antiferromagnets

Advanced Science, EarlyView.
Transition metal and chalcogen substituents are introduced into 2D antiferromagnet, NiPS3, and comprehensive photoluminescence and Raman spectroscopy studies are conducted to investigate how spin orbit entangled exciton and two magnon scattering evolve as functions of substituent concentration.
Cong Tai Trinh, Na Liu, Rabindra Basnet, Dinesh Upreti, Rijan Karkee, Vigneshwaran Chandrasekaran, Andrew C. Jones, Michael T. Pettes, Thuc T. Mai, Michael A. Susner, Jin Hu, Rahul Rao, Han Htoon   +12 more
wiley   +1 more source

Real‐Time High‐Definition Hyperspectral Endoscopy via Spatial‐Temporal Low‐Frequency‐Stochastic Spectral Encoding

Advanced Science, EarlyView.
A real‐time, high‐definition hyperspectral endoscopy is enabled by developing a spatial‐temporal spectral encoding approach based on low‐frequency stochastic filters combined with an encoding‐guided attention network. It provides hyperspectral image of in vivo tissue with fine superficial features, enables visualization of rapid and subtle ...
Xiaowei Liu, Jiakang Shao, Julin Xiao, Chenying Yang, Jiahe Zhang, Xiaoyu Yang, Xiang Hao, Ying Gu, Xu Liu, Yizhou Tan, Ji Qi, Qing Yang   +11 more
wiley   +1 more source

Continuously tunable, narrow-linewidth laser based on a semiconductor optical amplifier and a linearly chirped fiber Bragg grating.

Optics Express, 2019
We describe a simple, narrow-linewidth, tunable fiber-based laser with a high degree of tuning accuracy. A polarization independent semiconductor optical amplifier (SOA) is used as the gain medium in a unidirectional fiber ring cavity with a circulator ...
Xiong Yang, R. Lindberg, W. Margulis, K. Fröjdh, F. Laurell   +4 more
semanticscholar   +1 more source

Wafer Scale III‐Nitride Deep‐Ultraviolet Vertical‐Cavity Surface‐Emitting Lasers Featuring Nanometer‐Class Control of Cavity Length

Advanced Science, EarlyView.
A DUV‐VCSEL strategy featuring the nanometer‐class control of the cavity length is proposed in the DUV optoelectronic framework based on GaN templates. After the sapphire removal, a self‐terminated etching technology is developed, whereby the cavity length can be accurately determined by epitaxy instead of the fabrication process. As such, a record low
Chen Ji, Jiaming Wang, Fujun Xu, Lisheng Zhang, Jing Lang, Ziyao Zhang, Fuyun Tan, Chengzhi Ji, Junchuan Zhang, Erfei Zhang, Xiangning Kang, Zhixin Qin, Guangxu Ju, Jiejun Wu, Xuelin Yang, Ning Tang, Xinqiang Wang, Weikun Ge, Bo Shen   +18 more
wiley   +1 more source