title: Light focusing by slot Fabry-Perot photonic crystal nanoresonator on scanning tip.
abstract: We numerically investigate the propagation of light through the photonic crystal (PhC) waveguide on low refraction index material for near-field light focusing at the visible wavelength (635 nm) by incorporating a center air slot and Fabry-Perot resonator on the scanning tip. Perturbations by water and substrate refraction index changes of the PhC are analyzed by the finite-difference time-domain method to show minimal impact on light confinement and throughput. Such a total dielectric probe tip design has great potential to complement the current widely used metal-coated optical-fiber-based light confinement probe.
authors: Department of Biomedical Engineering, University of Texas at Austin, 10100 Burnet Road, Austin, Texas 78758, USA.
authors: Lingyun
authors: L
authors: Wang
authors: Kazunori
authors: K
authors: Hoshino
authors: Xiaojing
authors: X
authors: Zhang