Surface Optomechanics: Analytic Solution of Detection Limits of Surface Acoustic Waves in Various Fluids
Contributing USMA Research Unit(s)
Electrical Engineering and Computer Science, Photonics Research Center
Here we derive the absolute detection limits of various families of surface acoustic waves (SAW) resulting from Brillouin scattering in a whispering gallery resonator (WGR). Given this limit, we calculate the absolute concentration limits for detection of pollutant chemicals in air, water, or other fluids surrounding the WGR. General equations for SAW velocity, linewidth, and detectability are given.
J. D. Zehnpfennig II, CDT D. D. Covell, CDT M. R. Letarte, K. E. Sheetz, J. J. Raftery, Jr., “Surface Optomechanics: Analytic Solution of Detection Limits of Surface Acoustic Waves in Various Fluids” Frontiers in Optics 2012, Rochester, NY (Oct 2012).