title: Design of metal-cladded near-field fiber probes with a dispersive body-of-revolution finite-difference time-domain method.
abstract: A dispersive body-of-revolution finite-difference time-domain method is developed to simulate metal-cladded near-field scanning optical microscope (NSOM) probes. Two types of NSOM probe (aperture and plasmon NSOM probes) are analyzed and designed with this fast method. The influence of the metal-cladding thickness and the excitation mode on the performance of the NSOM probes is studied. We introduce a new scheme of illumination-mode NSOM by employing the plasmon NSOM probe with the TM01 mode excitation. Such a NSOM probe is designed, and we demonstrate its advantages over the conventional aperture NSOM probe by scanning across a metallic object.
authors: Centre for Optical and Electromagnetic Research, Joint Research Center of Photonics of the Royal Institute of Technology, Sweden.
authors: Liu
authors: L
authors: Liu
authors: Sailing
authors: S
authors: He
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D020342:Finite Element Analysis; D008670:Metals; D020527:Microscopy, Scanning Probe / Q000295:instrumentation* / Q000379:methods; D008962:Models, Theoretical; D009716:Numerical Analysis, Computer-Assisted; D020349:Surface Plasmon Resonance / Q000295:instrumentation* / Q000379:methods; D014159:Transducers
chemical_list: D008670:Metals