Spectroscopy of 1.55 $\mu$m PbS Quantum Dots on Si Photonic Crystal Cavities with a Fiber Taper Waveguide

M. T. Rakher, R. Bose, C. W. Wong +1

We use an optical fiber taper waveguide to probe PbS quantum dots (QDs) dried on Si photonic crystal cavities near 1.55 $\mu$m. We demonstrate that a low density ($\lesssim 100\mu$m$^…