Thermal Fluctuation Analysis Of Singly Optically Trapped Spheres In Hollow Photonic Crystal Cavities

We report on the behaviour of singly optically trapped nanospheres inside a hollow, resonant photonic crystal cavity and measure experimentally the trapping constant using back-focal plane interferometry. We observe two trapping regimes arising from the back-action effect on the motion of the nanosphere in the optical cavity. The specific force profiles from these trapping regimes is measured. Published by AIP Publishing.