Photonic-band-gap gyrotron amplifier with picosecond pulses

被引：38
作者：
Nanni, Emilio A. [1 ,2 ]
Jawla, Sudheer [1 ]
Lewis, Samantha M. [3 ]
Shapiro, Michael A. [1 ]
Temkin, Richard J. [1 ]
机构：
[1] MIT, Plasma Sci & Fus Ctr, 77 Mass Ave, Cambridge, MA 02139 USA
[2] Stanford Univ, SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA
[3] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA
来源：
APPLIED PHYSICS LETTERS | 2017年 / 111卷 / 23期
基金：
美国国家卫生研究院;
关键词：
DYNAMIC NUCLEAR-POLARIZATION;
D O I：
10.1063/1.5006348
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the amplification of 250GHz pulses as short as 260 ps without observation of pulse broadening using a photonic-band-gap circuit gyrotron traveling-wave-amplifier. The gyrotron amplifier operates with a device gain of 38 dB and an instantaneous bandwidth of 8GHz. The operational bandwidth of the amplifier can be tuned over 16GHz by adjusting the operating voltage of the electron beam and the magnetic field. The amplifier uses a 30cm long photonic-band-gap interaction circuit to confine the desired TE03-like operating mode while suppressing lower order modes which can result in undesired oscillations. The circuit gain is >55 dB for a beam voltage of 23 kV and a current of 700mA. These results demonstrate the wide bandwidths and a high gain achievable with gyrotron amplifiers. The amplification of picosecond pulses of variable lengths, 260-800 ps, shows good agreement with the theory using the coupled dispersion relation and the gain-spectrum of the amplifier as measured with quasi-CW input pulses. Published by AIP Publishing.
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页数：5
相关论文
共 15 条
[1]   Nanosecond Pulses in a THz Gyrotron Oscillator Operating in a Mode-Locked Self-Consistent Q-Switch Regime [J].
Alberti, S. ;
Braunmueller, F. ;
Tran, T. M. ;
Genoud, J. ;
Hogge, J-Ph ;
Tran, M. Q. ;
Ansermet, J-Ph .
PHYSICAL REVIEW LETTERS, 2013, 111 (20)
[2]   High-field dynamic nuclear polarization for solid and solution biological NMR [J].
Barnes, A. B. ;
De Paepe, G. ;
van der Wel, P. C. A. ;
Hu, K. -N. ;
Joo, C. -G. ;
Bajaj, V. S. ;
Mak-Jurkauskas, M. L. ;
Sirigiri, J. R. ;
Herzfeld, J. ;
Temkin, R. J. ;
Griffin, R. G. .
APPLIED MAGNETIC RESONANCE, 2008, 34 (3-4) :237-263
[3]   Dynamic nuclear polarization at 700 MHz/460 GHz [J].
Barnes, Alexander B. ;
Markhasin, Evgeny ;
Daviso, Eugenio ;
Michaelis, Vladimir K. ;
Nanni, Emilio A. ;
Jawla, Sudheer K. ;
Mena, Elijah L. ;
DeRocher, Ronald ;
Thakkar, Ajay ;
Woskov, Paul P. ;
Herzfeld, Judith ;
Temkin, Richard J. ;
Griffin, Robert G. .
JOURNAL OF MAGNETIC RESONANCE, 2012, 224 :1-7
[4]   Gyrotron traveling wave amplifier with a helical interaction waveguide [J].
Denisov, GG ;
Bratman, VL ;
Cross, AW ;
He, W ;
Phelps, ADR ;
Ronald, K ;
Samsonov, SV ;
Whyte, CG .
PHYSICAL REVIEW LETTERS, 1998, 81 (25) :5680-5683
[5]   Generation of trains of ultrashort microwave pulses by two coupled helical gyro-TWTs operating in regimes of amplification and nonlinear absorption [J].
Ginzburg, N. S. ;
Denisov, G. G. ;
Vilkov, M. N. ;
Sergeev, A. S. ;
Zotova, I. V. ;
Samsonov, S. V. ;
Mishakin, S. V. .
PHYSICS OF PLASMAS, 2017, 24 (02)
[6]   Mechanisms of amplification of ultrashort electromagnetic pulses in gyrotron traveling wave tube with helically corrugated waveguide [J].
Ginzburg, N. S. ;
Zotova, I. V. ;
Sergeev, A. S. ;
Zaslavsky, V. Yu. ;
Zheleznov, I. V. ;
Samsonov, S. V. ;
Mishakin, S. V. .
PHYSICS OF PLASMAS, 2015, 22 (11)
[7]  
Goldman M., 1970, Spin temperature and nuclear magnetic resonance in solids
[8]  
HE W, 2011, TST, V4, P9
[9]   Demonstration of a 140-GHz 1-kW Confocal Gyro-Traveling-Wave Amplifier [J].
Joye, Colin D. ;
Shapiro, Michael A. ;
Sirigiri, Jagadishwar R. ;
Temkin, Richard J. .
IEEE TRANSACTIONS ON ELECTRON DEVICES, 2009, 56 (05) :818-827
[10]   Amplification of Picosecond Pulses in a 140-GHz Gyrotron-Traveling Wave Tube [J].
Kim, H. J. ;
Nanni, E. A. ;
Shapiro, M. A. ;
Sirigiri, J. R. ;
Woskov, P. P. ;
Temkin, R. J. .
PHYSICAL REVIEW LETTERS, 2010, 105 (13)
12