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Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
Published on: October 13, 2017
Photonic band-edge micro lasers with quantum dot gain
Masahiro Nomura1, Satoshi Iwamoto, Aniwat Tandaechanurat
1Institute for Nano Quantum Information Electronics, Research Center for Advanced Science and Technology, Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan. nomura@iis.u-tokyo.ac.jp
Abstract:
We demonstrate optically pumped continuous-wave photonic band-edge microlasers on a two-dimensional photonic crystal slab. Lasing was observed at a photonic band-edge, where the group velocity was significantly small near the K point of the band structure having a triangular lattice. Lasing was achieved by using a quantum dot gain material, which resulted in a significant decrease in the laser threshold, compared with photonic band-edge lasers using quantum well gain material. Extremely low laser thresholds of approximately 80 nW at 6 K was achieved. Lasing was observed in a defect-free photonic crystal as small as approximately 7 microm square.
