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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Generation of powerful subnanosecond microwave pulses in the range of 38-150 GHz

Yalandin, M I and Shpak, V G and Shunailov, S A and Oulmaskoulov, M R and Ginzburg, N S and Zotova, I V and Novozhilova, Y V and Sergeev, A S and Phelps, A D R and Cross, A W and Wiggins, Mark and Ronald, K (2000) Generation of powerful subnanosecond microwave pulses in the range of 38-150 GHz. IEEE Transactions on Plasma Science, 28 (5). pp. 1615-1619. ISSN 0093-3813

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Experimental measurements of coherent stimulated radiation from intense, subnanosecond electron bunches moving through a periodic waveguide and interacting with a backward propagating TM01 male are presented. The ultra-short microwave pulses in Ka, W, and G band were generated with repetition frequencies of up to 25 Hz, Observation of RF breakdown of ambient air, as well as direct measurements by hot-carrier germanium detectors, gives an estimate of the peak power up to 140 MW for the 300-400 ps pulses at 38 GHz. The initial observation of 75 GHz 10-15 MW radiation pulses with duration less than 150 ps, and of 150 GHz microwave spikes with a risetime of 75 ps are also reported.