Abstract
AMPLIFICATION of 6 dB has been obtained in a travelling wave maser at 36 GHz using Cr+3 doped rutile (TiO2) as the active material. The slow wave structure is a fully filled wave guide with the crystal orientation designed for push–pull pumping and double ion site operation. A superconducting magnet operating in the persistent mode provides the direct current magnetic field.
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SWANSON, P., HAGEN, J. 36 GHz Travelling Wave Maser. Nature 218, 158 (1968). https://doi.org/10.1038/218158a0
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DOI: https://doi.org/10.1038/218158a0
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