Imaging Nanophotonic Modes of Microresonators using a Focused Ion Beam.

ABSTRACT: Optical microresonators have proven powerful in a wide range of applications, including cavity quantum electrodynamics^1-3, biosensing⁴, microfludics⁵, and cavity optomechanics^6-8. Their performance depends critically on the exact distribution of optical energy, confined and shaped by the nanoscale device geometry. Near-field optical probes⁹ can image this distribution, but the physical probe necessarily perturbs the near field, which is particularly problematic for sensitive high quality factor resonances^10,11. We present a new approach to mapping nanophotonic modes that uses a controllably small and local optomechanical perturbation introduced by a focused lithium ion beam¹². An ion beam (radius ≈50 nm) induces a

SUBMITTER: Twedt KA 

PROVIDER: S-EPMC4832418 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature