Results 131 to 140 of about 117,276 (312)
IEEE Photonics JournalAccurate measurement of interferometer arm-length difference is very important in the application fields such as fiber optic hydrophones. However, the interferometer is very sensitive to the environmental vibration and noise, which affects the accuracy ...
Luwei Shuai, Lei Ye, Qing Ye
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Advanced Optical Materials, EarlyView.ABSTRACT Photonic integrated circuits (PICs) can deliver unparalleled performance for future neuromorphic computing applications. Such neuromorphic PICs require a large number of tunable switches, which are typically realized with current‐controlled heaters, resulting in considerable energy consumption.
Jens Samland +10 more
wiley +1 more source
TRC-Based High-Precision Spot Position Detection in Inter-Satellite Laser Communication. [PDF]
Sensors (Basel), 2020 Li Q +7 more
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Advanced Optical Materials, EarlyView.Large Faraday rotation at room temperature is observed in thin films of discotic copper (Cu2+: 3d9) and vanadyl (VO2+: 3d1) enaminoketone complexes. The large Verdet constant originates from a high density of paramagnetic centers, metal‐ligand p−d hybridization and π orbitals involved in optical transitions (identified by DFT calculations), as well as ...
Karolina Łempicka‐Mirek +8 more
wiley +1 more source
CTPMSN: Enhancing Multimodal Remote Sensing Classification With Composite Text Prompts
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingRemote sensing multimodal data integrates information from various sensors, providing detailed characterization and reliable monitoring capabilities for Earth observation tasks. This data is crucial in environmental surveillance, disaster assessment, and
Aili Wang +5 more
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Broadband Directional Thermal Radiation with Asymmetric Femtosecond Laser‐Processed Surfaces
Advanced Optical Materials, EarlyView.Femtosecond laser processing is used to scalably create self‐organized angled microstructures which exhibit highly directional emissivity that occurs for all polarizations. Laser parameters are tuned to alter the surface features, control the direction of emission, and enhance the directional emissivity. Electromagnetic modeling is performed to analyze
Andrew Butler +8 more
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Thickness‐Dependent Infrared Emissivity of Ultrathin Freestanding MoSiN Nanocomposite Membranes
Advanced Optical Materials, EarlyView.ABSTRACT Metals and dielectrics show opposite trends in thickness‐dependent infrared emissivity: metallic films exhibit a rise in emissivity below a critical thickness, while dielectric films show a corresponding decline. For applications demanding both high emissivity and mechanical strength in membranes with nanoscale thickness, combining these ...
Reethu Sebastian +3 more
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Target tracking using laser range finder with occlusion
, 2010 Mestrado em Engenharia MecânicaEste trabalho apresenta uma técnica para a detecção e seguimento de múltiplos alvos móveis usando um sensor de distâncias laser em situações de forte oclusão.
Almeida, Jorge Manuel Soares de
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Exciton Radiative Lifetimes in Hexagonal Diamond Ge and SixGe1–x Alloys
Advanced Optical Materials, EarlyView.Strong room‐temperature photoluminescence reported in hexagonal Ge conflicts with theory predicting a nearly dark band edge. First‐principles calculations of excitonic radiative lifetimes fill a key gap in this debate, showing that pristine hexagonal Ge remains intrinsically weakly emissive, while Si alloying only modestly shortens the lifetime and ...
Michele Re Fiorentin +2 more
wiley +1 more source
Development status and trend of space information network and laser communication
物联网学报, 2019 An integrated space-earth information network is an important symbol of a strong country in science and technology.According to China’s overall plan,an information network with global coverage,on-demand services,local access and security and credibility ...
Huilin JIANG +3 more
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