Advanced Materials

High-Performance, Quantum Dot Nanocomposites for Nonlinear Optical and Optical Gain Applications


  • The authors thank D. Muller for helpful discussions of STEM results. This work was supported by Los Alamos LDRD Funds and the U.S. Department of Energy, Office of Science, Division of Chemical Sciences.


The preparation of CdSe nanocrystal quantum dot (NQD)–titania nanocomposites (see Figure) exhibiting large NQD packing densities and high photoluminescence quantum efficiencies is described. These new materials show both large third-order nonlinear susceptibilities and optical gain. Furthermore, micro-ring lasing and efficient dynamic holographic gratings using these nanocomposites are demonstrated.