Advanced Materials

Cover image for Vol. 26 Issue 40

February 16, 2002

Lasing from colloidal semiconductors.....

Lasers based on colloidal semiconductor nanostructures can benefit from the remarkable spectral coverage afforded through the quantum confinement effect. The first observation of lasing for colloidal CdSe/ZnS quantum rods in solution using a cylindrical microcavity is reported here. Lasing in the same configuration was also observed for spherical nanocrystal quantum dots. For the quantum dots lasing is not polarized, but in quantum rods the laser emission is highly linearly polarized, a desirable feature for laser and photonic applications (U. Banin et al., Feb. 19; Adv. Mater. 2002, 14, 317-321).

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