Initial Experimental Results for a High Power Frequency-Tunable sub-THz Gyrotron

2019 ◽  
Author(s):  
Xiaotong Guan ◽  
Tongbin Yang ◽  
Weniie Fu ◽  
Yang Yan ◽  
Dun Lu
Keyword(s):  
High Power ◽  
Experimental Results ◽  
Power Frequency ◽  
Frequency Tunable

scholarly journals Frequency Tuning Characteristics of a High-Power Sub-THz Gyrotron with Quasi-Optical Cavity

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 526
Author(s):  
Xiaotong Guan ◽  
Jiayi Zhang ◽  
Wenjie Fu ◽  
Dun Lu ◽  
Tongbin Yang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Power ◽  
Frequency Tuning ◽  
Optical Cavity ◽  
Separation Distance ◽  
Center Frequency ◽  
Broad Bandwidth ◽  
Particle In Cell ◽  
Power Frequency ◽  
Frequency Tunable

Motivated by some emerging high-frequency applications, a high-power frequency-tunable sub-THz quasi-optical gyrotron cavity based on a confocal waveguide is designed in this paper. The frequency tuning characteristics of different approaches, including magnetic field tuning, mirror separation adjustment, and hybrid tuning, have been investigated by particle-in-cell (PIC) simulation. Results predict that it is possible to realize a smooth continuous frequency tuning band with an extraordinarily broad bandwidth of 41.55 GHz, corresponding to a relative bandwidth of 18.7% to the center frequency of 0.22 THz. The frequency tunability is provided by varying the separation distance between two mirrors and correspondingly adjusting the external magnetic field. During the frequency tuning, the output power remains higher than 20 kW, which corresponds to an interaction efficiency of 10%. Providing great advantages in terms of broad bandwidth, smooth tuning, and high power, this research may be conducive to the development of high-power frequency-tunable THz gyrotron oscillators.

scholarly journals A High Power, Frequency Tunable Colloidal Quantum Dot (CdSe/ZnS) Laser

Nanomaterials ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 29 ◽  
Author(s):  
Saradh Prasad ◽  
Hanan AlHesseny ◽  
Mohamad AlSalhi ◽  
Durairaj Devaraj ◽  
Vadivel Masilamai
Keyword(s):  
Quantum Dot ◽  
High Power ◽  
Power Frequency ◽  
Colloidal Quantum Dot ◽  
Frequency Tunable

High-power frequency stabilized tapered diode amplifiers at 1064 nm

2009 ◽  
Author(s):  
R. Ostendorf ◽  
C. Schilling ◽  
G. Kaufel ◽  
R. Moritz ◽  
J. Wagner ◽  
...  
Keyword(s):  
High Power ◽  
Power Frequency

Optimization of ${\rm Al}_{0.29}{\rm Ga}_{0.71}{\rm N}/{\rm GaN}$ High Electron Mobility Heterostructures for High-Power/Frequency Performances

2013 ◽  
Vol 60 (10) ◽  
pp. 3105-3111 ◽  
Author(s):  
Stephanie Rennesson ◽  
Francois Lecourt ◽  
Nicolas Defrance ◽  
Magdalena Chmielowska ◽  
Sebastien Chenot ◽  
...  
Keyword(s):  
High Power ◽  
Electron Mobility ◽  
High Electron ◽  
High Electron Mobility ◽  
Power Frequency

Some Observations on Arc Potentials in Hydrogen Thyratron Pulse Discharges

1972 ◽  
Vol 50 (12) ◽  
pp. 1337-1345 ◽  
Author(s):  
R. J. Armstrong
Keyword(s):  
High Power ◽  
Electrical Discharge ◽  
Experimental Results ◽  
Relaxation Properties ◽  
Arc Voltage ◽  
Electrons And Ions

The arc voltage in high power hydrogen thyratrons has been measured, under a variety of pulse and DC conditions. The valve is found to be higher under pulse conditions than under DC conditions. An explanation, similar to that invoked by Sugawara and Gregory in a different situation, is found to give some agreement with the experimental results. This explanation depends on the relaxation properties of the electrons and ions in an electrical discharge or plasma.

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