Romney: 'Even Jimmy Carter' would have ordered Bin Laden raid (Los Angeles Times)

Share With Friends: | | Politics - Top Stories News, News Feeds and News via Feedzilla.

golden globes 2012 winners golden globes 2012 red carpet golden globes red carpet nfc championship game martin luther king jr quotes martin luther king jr i have a dream speech packers score

Researchers make an RGB laser with a regular laser and quantum dots

The problem with lasers is, they tend to generate just a single color or light.To get more than one hue requires actually combining more than one type of laser to produce red, green and blue. But researchers at Brown University have figured out a solution to creating small RGB lasers by using colloidal quantum dots, or CQDs. The idea of leveraging the properties of the thin film isn't new, but past attempts to use CQDs in semiconductor lasers have failed because the necessary energy tends to wind up as heat instead of light. The work around scientists found was to excite the various dot sizes with a laser then filter out original light source. Unfortunately, the solution is far from practical for use in commercial products, but it does represent a milestone in the march towards a single-material multi-wavelength laser. For more details check out the source link.

Researchers make an RGB laser with a regular laser and quantum dots originally appeared on Engadget on Tue, 01 May 2012 06:06:00 EDT. Please see our terms for use of feeds.

Permalink Ars Technica  |  Nature, Brown University  | Email this | Comments

van der sloot heather locklear mlk memorial mlk memorial heather locklear hospitalized joplin tornado extreme makeover home edition