Photonic-band-gap gyrotron amplifier with picosecond pulses
Here, we report the amplification of 250 GHz 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 8 GHz. The operational bandwidth of the amplifier can be tuned over 16 GHz by adjusting the operating voltage of the electron beam and the magnetic field. The amplifier uses a 30 cm long photonic-band-gap interaction circuit to confine the desired TE 03-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 700 mA. 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.
- Authors:
-
[1]
; [2]
; [3]
; [2]
; [2]
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Stanford Univ., Menlo Park, CA (United States). SLAC National Accelerator Lab.
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Univ. of California, Berkeley, CA (United States)
- Publication Date:
- Grant/Contract Number:
- AC02-76SF00515; EB001965; EB004866
- Type:
- Accepted Manuscript
- Journal Name:
- Applied Physics Letters
- Additional Journal Information:
- Journal Volume: 111; Journal Issue: 23; Journal ID: ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)
- Research Org:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org:
- USDOE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
- OSTI Identifier:
- 1417663
Nanni, Emilio A., Jawla, Sudheer, Lewis, Samantha M., Shapiro, Michael A., and Temkin, Richard J.. Photonic-band-gap gyrotron amplifier with picosecond pulses. United States: N. p.,
Web. doi:10.1063/1.5006348.
Nanni, Emilio A., Jawla, Sudheer, Lewis, Samantha M., Shapiro, Michael A., & Temkin, Richard J.. Photonic-band-gap gyrotron amplifier with picosecond pulses. United States. doi:10.1063/1.5006348.
Nanni, Emilio A., Jawla, Sudheer, Lewis, Samantha M., Shapiro, Michael A., and Temkin, Richard J.. 2017.
"Photonic-band-gap gyrotron amplifier with picosecond pulses". United States.
doi:10.1063/1.5006348.
@article{osti_1417663,
title = {Photonic-band-gap gyrotron amplifier with picosecond pulses},
author = {Nanni, Emilio A. and Jawla, Sudheer and Lewis, Samantha M. and Shapiro, Michael A. and Temkin, Richard J.},
abstractNote = {Here, we report the amplification of 250 GHz 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 8 GHz. The operational bandwidth of the amplifier can be tuned over 16 GHz by adjusting the operating voltage of the electron beam and the magnetic field. The amplifier uses a 30 cm 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 700 mA. 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.},
doi = {10.1063/1.5006348},
journal = {Applied Physics Letters},
number = 23,
volume = 111,
place = {United States},
year = {2017},
month = {12}
}