A sensitive interferometric accelerometer

Stephens, M.
September 1993
Review of Scientific Instruments;Sep93, Vol. 64 Issue 9, p2612
Academic Journal
An interferometric accelerometer developed for use in characterizing isolation systems for gravitational wave detectors is described. A Nd:YAG laser is frequency locked to a Fabry-Pérot cavity in which one mirror is flexibly mounted. At 100 Hz the displacement sensitivity is 1.0 × 10[sup -14] m/ √Hz, 100 times more sensitive than the piezoelectric accelerometers normally used for such measurements. The sensitivity of the accelerometer is limited by the frequency noise of the laser.


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