High power THz coherent Cherenkov radiation based on a separated dielectric loaded waveguide

2019 ◽  
Vol 923 ◽  
pp. 45-50 ◽  
Author(s):  
Shimin Jiang ◽  
Weiwei Li ◽  
Zhigang He ◽  
Ruixuan Huang ◽  
Qika Jia ◽  
...  
Keyword(s):  
High Power ◽  
Cherenkov Radiation

scholarly journals Review of the high-power vacuum tube microwave sources based on Cherenkov radiation

2020 ◽  
Author(s):  
Weiye Xu
Keyword(s):  
Output Power ◽  
High Power ◽  
Traveling Wave ◽  
Cherenkov Radiation ◽  
Continuous Wave ◽  
Vacuum Tube ◽  
Microwave Source ◽  
Vacuum Tubes ◽  
Traveling Wave Tubes ◽  
Microwave Sources

Since the first vacuum tube (X-ray tube) was invented by Wilhelm Röntgen in Germany, after more than one hundred years of development, the average power density of the vacuum tube microwave source has reached the order of 108 [MW][GHz]2. In the high-power microwave field, the vacuum devices are still the mainstream microwave sources for applications such as scientific instruments, communications, radars, magnetic confinement fusion heating, microwave weapons, etc. The principles of microwave generation by vacuum tube microwave sources include Cherenkov or Smith-Purcell radiation, transition radiation, and Bremsstrahlung. In this paper, the vacuum tube microwave sources based on Cherenkov radiation were reviewed. Among them, the multi-wave Cherenkov generators can produce 15 GW output power in X-band. Cherenkov radiation vacuum tubes that can achieve continuous-wave operation include Traveling Wave Tubes and Magnetrons, with output power up to 1MW. Cherenkov radiation vacuum tubes that can generate frequencies of the order of 100 GHz and above include Traveling Wave Tubes, Backward Wave Oscillators, Magnetrons, Surface Wave Oscillators, Orotrons, etc.

scholarly journals High power NIR fiber-optic femtosecond Cherenkov radiation and its application on nonlinear light microscopy

2014 ◽  
Vol 22 (8) ◽  
pp. 9498 ◽  
Author(s):  
Ming-Che Chan ◽  
Chi-Hsiang Lien ◽  
Jyan-Yo Lu ◽  
Bo-Han Lyu
Keyword(s):  
Light Microscopy ◽  
High Power ◽  
Cherenkov Radiation ◽  
Fiber Optic

scholarly journals General theory and observation of Cherenkov radiation induced by multimode solitons

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
M. A. Eftekhar ◽  
H. Lopez-Aviles ◽  
F. W. Wise ◽  
R. Amezcua-Correa ◽  
D. N. Christodoulides
Keyword(s):  
Optical Fibers ◽  
High Power ◽  
Cherenkov Radiation ◽  
Many Body ◽  
Multimode Fibers ◽  
Formidable Challenge ◽  
Theoretical Predictions ◽  
Radiation Induced ◽  
Soliton Fission ◽  
Physical Phenomena

AbstractAdvancements in computational capabilities along with the possibility of accessing high power levels have stimulated a reconsideration of multimode fibers. Multimode fibers are nowadays intensely pursued in terms of addressing longstanding issues related to information bandwidth and implementing new classes of high-power laser sources. In addition, the multifaceted nature of this platform, arising from the complexity associated with hundreds and thousands of interacting modes, has provided a fertile ground for observing novel physical effects. However, this same complexity has introduced a formidable challenge in understanding these newly emerging physical phenomena. Here, we provide a comprehensive theory capable of explaining the distinct Cherenkov radiation lines produced during multimode soliton fission events taking place in nonlinear multimode optical fibers. Our analysis reveals that this broadband dispersive wave emission is a direct byproduct of the nonlinear merging of the constituent modes comprising the resulting multimode soliton entities, and is possible in both the normal and anomalous dispersive regions. These theoretical predictions are experimentally and numerically corroborated in both parabolic and step-index multimode silica waveguides. Effects arising from different soliton modal compositions can also be accounted for, using this model. At a more fundamental level, our results are expected to further facilitate our understanding of the underlying physics associated with these complex “many-body” nonlinear processes.

Dynamic Modeling and Wear-Based Remaining Useful Life Prediction of High Power Clutch Systems

2005 ◽  
Vol 48 (2) ◽  
pp. 208-217 ◽  
Author(s):  
Matthew Watson ◽  
Carl Byington ◽  
Douglas Edwards ◽  
Sanket Amin
Keyword(s):  
Dynamic Modeling ◽  
High Power ◽  
Life Prediction ◽  
Remaining Useful Life ◽  
Useful Life

Less Power, Greater Conflict

2018 ◽  
Vol 49 (1) ◽  
pp. 47-62 ◽  
Author(s):  
Petra C. Schmid
Keyword(s):  
Low Power ◽  
High Power ◽  
Goal Pursuit ◽  
Goal Conflict ◽  
Personal Goals ◽  
Multiple Goals ◽  
Objective Performance ◽  
The Future ◽  
The Way

Abstract. Power facilitates goal pursuit, but how does power affect the way people respond to conflict between their multiple goals? Our results showed that higher trait power was associated with reduced experience of conflict in scenarios describing multiple goals (Study 1) and between personal goals (Study 2). Moreover, manipulated low power increased individuals’ experience of goal conflict relative to high power and a control condition (Studies 3 and 4), with the consequence that they planned to invest less into the pursuit of their goals in the future. With its focus on multiple goals and individuals’ experiences during goal pursuit rather than objective performance, the present research uses new angles to examine power effects on goal pursuit.

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