Design and Analysis of Optically Pumped Submillimeter Waveguide Maser Amplifiers and Oscillators

摘要

This report describes the design and experimental measure¬ments of an optically pumped far-infrared (FIR) waveguide maser and preliminary measurements on a FIR waveguide amplifier. The FIR maser was found to operate satisfactorily in a chopped cw mode using either methanol (CH3OH) or acetonitrile (CH3CN) as the active molecule. Section II details the construction of the FIR maser, the method of cavity length tuning, and the design of the cavity. The experimental setup and measurement apparatus are described in Section III. The results of measurements made on the oscil¬lator are described in Section IV. Section V outlines progress made in design and testing of the FIR amplifier.