Nature of light is a fascinating subject of education and training for children. However, it is not easy to demonstrate and explain fundamental properties of the light to the primary & secondary school students. In this paper, we will present a new technique to teach concept of refraction, reflection, and total internal reflection of light in glasses by utilizing deviation angles of a prism for various surrounding index-matching oils.
KEYWORDS: Near field scanning optical microscopy, Luminescence, Gallium arsenide, Temperature metrology, Ferroelectric materials, Near field, Single photon, Tapered optical fibers, Quantum wells, 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.
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