Tunable 200-GHz electron cyclotron maser

Stephen N. Spark; Alan D.R. Phelps

doi:10.1117/12.18590

1 April 1990 Tunable 200-GHz electron cyclotron maser

Stephen N. Spark, Alan D.R. Phelps

Proceedings Volume 1226, Intense Microwave and Particle Beams; (1990) https://doi.org/10.1117/12.18590
Event: OE/LASE '90, 1990, Los Angeles, CA, United States

Abstract

This paper demonstrates the frequency versatility of the developed Mk-6 electron cyclotron maser. In a 100-ns pulse, this system produced more than 100 kW power in both the Ka-band (26-40 GHz) and the W-band (75-110 GHz) with the excitation of the TE(01) mode at 35 GHz and the TE(03) mode at 96 GHz. This system was crudely step tunable in the W-band. Due to the grossly overmoded regime in the G-band (140-220 GHz), the maser proved to be quasi-continuously tunable over the entire range. This work culminated in 200 GHz oscillation. Fast digitizers, with single event 750 MHz bandwidth, were used to study the rise and fall times of the mm-wave output pulse. These experiments revealed structure in the pulse and showed that the maser was operating in a burst mode.

Citation Download Citation

Stephen N. Spark and Alan D.R. Phelps "Tunable 200-GHz electron cyclotron maser", Proc. SPIE 1226, Intense Microwave and Particle Beams, (1 April 1990); https://doi.org/10.1117/12.18590

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