Abstract
We report observations of the radiation pressure induced expansion of a solid dielectric resonator. This effect causes a fundamental limit to the frequency stability of the resonator. The measurements were made on four high -factor quasi-TE “whispering gallery” modes from 9.9 to 12.6 GHz in a monocrystalline sapphire resonator at liquid helium temperatures. The fractional frequency shift is per μJ of energy stored in the resonator. This result is consistent in sign, magnitude, and linearity with the radiation pressure induced lattice expansion term predicted by Braginsky.
- Received 14 April 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.2141
©1997 American Physical Society