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US 9,373,931 B2Granted
Red, green, and blue lasing enabled by single-exciton gain in colloidal quantum dot films
AssigneeBrown University
InventorsArto V. Nurmikko, Cuong Dang
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Abstract
The methods and materials described herein contemplate the use films of colloidal quantum dots as a gain medium in a vertical-cavity surface-emitting laser. The present disclosure demonstrates a laser with single-exciton gain in the red, green, and blue wavelengths. Leveraging this nanocomposite gain, the results realize a significant step toward full-color single-material lasers.
Claims13
A vertical-cavity surface-emitting laser comprising;
- a resonant laser cavity;
- and
- a dense packed thin film of colloidal quantum dots comprising hydrophobic surface ligands as a single-exciton optical gain medium positioned in the cavity,
- wherein the packing density of the colloidal quantum dots in the film is between 50% and 100%.
1 more element
Dependencies are inferred from the claim text.