Results 61 to 70 of about 1,582 (191)

Study on Linewidth and Phase Noise Characteristics of a Narrow Linewidth External Cavity Diode Laser

Sensors
In the field of inter-satellite laser communication, achieving high-quality communication and compensating for the Doppler frequency shift caused by relative motion necessitate lasers with narrow linewidths, low phase noise, and the ability to achieve ...
Sheng Hu, Puchu Lv, Chenggang Guan, Shasha Li, Haixin Qin, Xiaoqiang Li, Xuan Chen, Linfeng Zhan, Weiqi Wang, Yifan Xiao, Minghu Wu   +10 more
doaj   +1 more source

Endohedral fullerenes as qubits: From synthesis to quantum computing applications

InfoMat, EarlyView.
Endohedral fullerenes emerge as promising platforms for qubits and qudits. This review surveys the primary synthesis routes, from arc‐discharge to high‐yield molecular surgery. It then details spin manipulation and readout in key systems, including metal‐based, cluster, and nitrogen‐containing fullerenes.
Jeong‐Seok Nam, Jiye Han, Jin‐Myung Choi, Franklin H. Cho, Daniel K. Park, Seunghee Park, Yoshifumi Hashikawa, Yasujiro Murata, Eunsang Kwon, Dong‐Hwan Kim, Junki Kim, Il Jeon   +11 more
wiley   +1 more source

Research on Variable Baseline Coherent Angle Measurement Based on Nutation Scanning

Photonics
In inter-satellite laser communication systems, angular deviations between the boresights of terminals exert an impact on system performance, thereby imposing higher requirements on performance parameters such as the angle measurement accuracy and range ...
Dixiang Zeng, Xiaonan Yu, Ziqi Zhang, Peng Lin, Rui Weng, Wenfang Jiao, Shoufeng Tong   +6 more
doaj   +1 more source

Dual‐Metasurface‐Integrated Fiber Array for Bidirectional Cylindrical‐Vector‐Beam Multiplexed Communication Using Off‐Axis Spatial Manipulation

Laser &Photonics Reviews, EarlyView.
A dual‐layer metasurface is integrated on a fiber‐array facet to realize compact, plug‐and‐play free‐space optical links with cylindrical vector beam (CVB) space‐division multiplexing. An optimized off‐axis collimation layer steers multiple channels, while a Dammann vortex layer performs polarization–topology conversion for bidirectional CVB (de ...
Xipeng Lu, Jinke Li, Jin Tae Kim, Shaoyan Li, Hongliang Li, Duk‐Yong Choi, Sang‐Shin Lee   +6 more
wiley   +1 more source

High-Precision Point-Ahead Angle Real-Time Prediction Algorithm for Inter-Satellite Laser Links

Photonics
The accurate prediction of the point-ahead angle (PAA) is crucial for applications of inter-satellite laser links (ISLLs), especially laser ranging and continuous communication.
Xiangnan Liu, Xiaoping Li, Zhongwen Deng, Haifeng Sun   +3 more
doaj   +1 more source

The Application of Telemedicine in Surgery

Med Research, EarlyView.
This figure provides an overview of the content presented in this article. Telemedicine is integrated throughout the entire surgical workflow, with distinct applications across the preoperative, intraoperative, and postoperative phases. These applications are enabled by a suite of supporting technologies, while the associated implementation challenges ...
Yufan Yang, Chang Liu, Xue Sun, Yiting Wang, Minghui Zhao, Shuya Jiang, Haoling Zhang, Wangzheqi Zhang, Wenwen Shi   +8 more
wiley   +1 more source

Refined Metamodel Disturbance Observer-Based Control for Coarse Pointing Assembly Under Constraints

Guidance, Navigation and Control
The target tracking performance of the coarse pointing assembly (CPA) is a critical factor in determining the data transmission efficiency of the inter-satellite laser communication.
Yongjian Yang, Zeyu Bao, Jianzhong Qiao, Yukai Zhu, Lei Guo   +4 more
doaj   +1 more source

How can children and young people have a voice in urban treescapes?

People and Nature, EarlyView.
Abstract Scientific understanding of climate change has, to date, failed to result in sufficient action. This paper proposes that a deficit model of top‐down learning and dissemination in relation to public engagement with science may be part of the problem, particularly when considering the attitudes, values and empowerment of children and young ...
Simon Carr, Abi Hackett, Kate Pahl, Samyia Ambreen, Khawla Badwan, Elizabeth Curtis, Susannah Gill, Ambika Kapoor, Peter Lawrence, Johan Siebers, Jan White   +10 more
wiley   +1 more source

Radiation-induced degradation in optoelectronic devices for satellite applications: a review

Discover Materials
Optoelectronic devices play a crucial role in the functionality of satellite systems, particularly in optical communication. However, these devices face significant challenges due to radiation-induced degradation, which can compromise their performance ...
N. N. Sulaiman, N. F. Hasbullah, N. Saidin, Y. Javed, Z. I. Khan   +4 more
doaj   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source