We have investigated the intensity distribution through metallic nano double slit and nano double box by two dimensional finite-difference time-domain (FDTD) method based on Drude model. In particular, we find that there is an 'intermediate region' between near-field and far-field regions which varies with thickness and width of double slit. We will present the local fields propagating along and perpendicular to metal surface and their spatial distributions to verify the existence of the intermediate region.
Proc. SPIE. 7214, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIII
KEYWORDS: Ferroelectric materials, Quantum wells, Luminescence, Gallium arsenide, Single photon, Near field scanning optical microscopy, Near field, Tapered optical fibers, Temperature metrology, Absorption
We demonstrate an experimental setup combining the near-field scanning optical microscope (NSOM) and timecorrelated
single photon counting (TCSPC) system for high-resolution temporal and spatial spectroscopic measurements.
In particular, a multiple-quantum-well (MQW) structure was excited with a tapered optical fiber with 100 nm opening
aperture in near-field region and their temporal photoluminescence spectra were obtained by TCSPC system. We are
able to measure fluorescence decay time of a GaAs/AlGaAs MQW structure with well width of 75Å in the near-field
region at room temperature.