Sensitivity Improvement of a Two-Mode Gravitational Radiation Detector Through the Use of a Transducer Not Perfectly Tuned to the Antenna

摘要

The behavior of a gravitational wave antenna coupled to a passive resonant transducer was analyzed for short bursts of gravitational radiation. An expression for the noise temperature of the system is given for a transducer with resonant frequency and mechanical quality factor different from those of the antenna. The analysis of the optimum noise temperature obtainable for a given system shows that, analyzing only one mode, the optimum performance is obtained when the frequency of the transducer is slightly different from that of the antenna.