Photonic-band-gap gyrotron amplifier with picosecond pulses

Nanni, Emilio A.; Jawla, Sudheer; Lewis, Samantha M.; Shapiro, Michael A.; Temkin, Richard J.

doi:10.1063/1.5006348

Title: Photonic-band-gap gyrotron amplifier with picosecond pulses

Journal Article · Tue Dec 05 00:00:00 EST 2017 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.5006348· OSTI ID:1417663

^[1]; Jawla, Sudheer ^[2]; Lewis, Samantha M. ^[3]; Shapiro, Michael A. ^[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)

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.

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Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515; EB001965; EB004866

OSTI ID:: 1417663

Journal Information:: Applied Physics Letters, Vol. 111, Issue 23; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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References (12)

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Photonic-band-gap gyrotron amplifier with picosecond pulses J., Nanni, Emilio A. ; Jawla, Sudheer; Lewis, Samantha M. ; Shapiro, Michael A. ; Temkin, Richard Harvard Dataverse https://doi.org/10.7910/dvn/mzxff6	dataset	January 2020

Cited By (3)

State-of-the-Art of High-Power Gyro-Devices and Free Electron Masers Thumm, Manfred Journal of Infrared, Millimeter, and Terahertz Waves, Vol. 41, Issue 1 https://doi.org/10.1007/s10762-019-00631-y	journal	January 2020
Powerful continuous-wave sub-terahertz electron maser operating at the 3rd cyclotron harmonic Kalynov, Yu. K.; Manuilov, V. N.; Fiks, A. Sh. Applied Physics Letters, Vol. 114, Issue 21 https://doi.org/10.1063/1.5094875	journal	May 2019
Time-optimized pulsed dynamic nuclear polarization Tan, Kong Ooi; Yang, Chen; Weber, Ralph T. Science Advances, Vol. 5, Issue 1 https://doi.org/10.1126/sciadv.aav6909	journal	January 2019

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