Flexible distributed-feedback colloidal quantum dot laser

By fabricating a submicron-scale grating structure on a bendable polymer substrate, we demonstrate a flexible distributed-feedback colloidal quantum dot laser. This laser uses cadmium selenide/zinc sulfide core-shell nanostructures, operating in transverse electric polarized multiple-modes, and has a typical threshold pump fluence of similar to 4 mJ/cm(2). (C) 2011 American Institute of Physics. [doi:10.1063/1.3659305]