Blue lasers, lasers that emit a light beam with a wavelength between 400 nm and 500 nm, are key components of various technologies, ranging from high-resolution displays to printers, medical imaging tools and data storage solutions. A key advantage of these lasers is that they generate coherent and intense light beams that can be leveraged to develop highly advanced optical technologies.
One approach to developing blue lasers entails the use of colloidal quantum dots (CQDs). These are nanoscale semiconducting particles with unique optical properties associated with their size.
Lasers based on these nanoscale particles could have notable advantages, including enhanced power-efficiency and tunability. Most quantum dot-based lasers developed so far utilized cadmium (Cd) particles that emit red light, while efforts to introduce similar blue light-emitting lasers were sparser.
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