Laser Devices Based on One- and Two-Photon Pumped Semiconductor Core-Shell Quantum Dots

摘要

Highly luminescent CdSe-ZnS core-shell nanocrystals are utilized as dopant within Zr02 and Hf02 hybrid sol-gel matrices. The emission prop-erties of these hybrid materials are studied upon one- and two-photon excitation by fs laser pulses. Under these optical pumping regimes, low-threshold amplified stimulated emission is observed. Furthermore, the optical gain characteristics of these QD hybrid materials within 1 D and 2D distributed feedback laser architectures are explored.