The issue with lasers is, they have a tendency to generate only a single color or light.To get a couple of hue requires actually combining multiple kind of laser to supply red, green and blue. But researchers at Brown University have found out an answer to making small RGB lasers by means of colloidal quantum dots, or CQDs. The postulate of leveraging the properties of the skinny film isn't new, but past attempts to exploit CQDs in semiconductor lasers have failed since the necessary energy tends to finally end up as heat rather than light. The work around scientists found was to excite the many dot sizes with a laser then clear out original light source. Unfortuneately, the answer is much from practical to be used in commercial products, but it surely does represent a milestone within the march towards a single-material multi-wavelength laser. For more details have a look at the source link.
From WhatNewsToday.net
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