Results 111 to 120 of about 5,413 (290)

Integrated photonics for space communication and sensing

open access: yesJPhys Photonics
Integrated photonics takes advantages of size, weight, and power consumption, and can be widely used in space communication and sensing. This paper reviews the typical applications of integrated photonics for space communication and sensing.
Yongjun Guo   +14 more
doaj   +1 more source

Organic Photodetectors and Sensors for Low‐Light and Infrared Applications

open access: yesElectron, EarlyView.
This mini review highlights recent advances in organic photodetectors and sensors for low‐light and infrared applications, emphasizing molecular design, device architectures, and interface engineering that improve charge transport, detectivity, speed, and spectral selectivity.
Swarup Biswas, Hyeok Kim
wiley   +1 more source

Radiographic identification and description of the equine middle conchal sinus (ethmoidal sinus): Implications for diagnosing middle conchal sinusitis

open access: yesEquine Veterinary Journal, EarlyView.
Abstract Background The middle conchal sinus (MCS) (ethmoidal sinus) remains one of the least understood equine paranasal compartments. Despite recognition of its involvement in sinonasal disease, disorders of the MCS often remain underdiagnosed in the absence of computed tomographic (CT) imaging due to limited anatomical understanding and challenges ...
J.‐B. Pavard   +3 more
wiley   +1 more source

System Design Analysis of a Lightweight Laser Satellite Terminal

open access: yes, 1993
This study investigated the technological feasibility of a man- portable satellite laser communications system. Areas of interest were an end- to-end system analysis on the communications link evaluation of atmospheric effects and evaluation of semi ...
Page, Brian C.
core  

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

open access: yesFlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan   +7 more
wiley   +1 more source

Tin‐based perovskite light‐emitting diodes: Progress and perspective

open access: yesInfoScience, EarlyView.
This review assesses tin‐based perovskite light‐emitting diodes (PeLEDs), focusing on the limitations of Sn2+ oxidation–induced defects and uncontrolled crystallization. By evaluating advanced device engineering and structural innovations, this article highlights their viability in narrowband pure‐red displays and near‐infrared optical communication ...
Wenhao Bai   +7 more
wiley   +1 more source

Key Technologies and Future Prospects for High Availability of Satellite-Ground Laser Links

open access: yesGuangtongxin yanjiu
Compared with Radio Frequency (RF) communication, satellite-to-ground laser communication offers significant advantages including ultra-large bandwidth, high data rates, enhanced security, and low power consumption.
WANG Jiayi   +4 more
doaj  

Optimum transmitter radius for ground-to-satellite laser uplink communication systems in the presence of beam wander effect

open access: yes, 2010
Based on weak fluctuation theory and gamma-gamma irradiance distribution model, the combined effect of scintillation and beam wander on ground-to-satellite laser uplink communication systems is analyzed and optimum transmitter radius for the system is ...
Dang, Anhong   +7 more
core   +1 more source

Recent Advances in Photonic Bound States in the Continuum: From Fundamentals to Engineering and Implementation

open access: yesLaser &Photonics Reviews, EarlyView.
This review summarizes recent progress in meta‐photonics with a focus on bound states in the continuum (BICs) as a powerful platform for light confinement and control. It covers fundamental concepts, design strategies across optical regimes, symmetry breaking for practical quasi‐BICs, tunable and AI‐assisted BIC devices, and emerging applications in ...
Hafiz Saad Khaliq, Hak‐Rin Kim
wiley   +1 more source

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

open access: yesLaser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil   +6 more
wiley   +1 more source

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