Effective mass in quantum effects of radiation pressure
Laboratoire Kastler Brossel (Laboratoire de l'Université Pierre et Marie Curie
et de l'Ecole Normale Supérieure associé au Centre National de la Recherche Scientifique.) ,
Case 74, 4 place Jussieu, 75252 Paris Cedex 05, France
Published online: 15 August 1999
We study the quantum effects of radiation pressure in a high-finesse cavity with a mirror coated on a mechanical resonator. We show that the optomechanical coupling can be described by an effective susceptibility which takes into account every acoustic modes of the resonator and their coupling to the light. At low frequency this effective response is similar to a harmonic response with an effective mass smaller than the total mass of the mirror. For a plano-convex resonator the effective mass is related to the light spot size and becomes very small for small optical waists, thus enhancing the quantum effects of optomechanical coupling.
PACS: 42.50.Dv – Nonclassical field states; squeezed, antibunched, and sub-Poissonian states; operational definitions of the phase of the field; phase measurements / 42.50.Lc – Quantum fluctuations, quantum noise, and quantum jumps / 43.40.+s – Structural acoustics and vibration
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999