New laser a game changer for future technology

New laser a game changer for future technology
Highlights

A new laser developed at Yale University can significantly improve the imaging quality of the next generation of high-tech microscopes, laser projectors and biomedical imaging. The technology combines the brightness of traditional lasers with the lower image corruption of light emitting diodes (LEDs).

New York: A new laser developed at Yale University can significantly improve the imaging quality of the next generation of high-tech microscopes, laser projectors and biomedical imaging. The technology combines the brightness of traditional lasers with the lower image corruption of light emitting diodes (LEDs).

“This 'chaotic cavity' laser is a great example of basic research ultimately leading to a potentially important invention for the social good,” said A Douglas Stone, the Carl A Morse Professor and chair of applied physics at Yale. The search for better light sources for high-speed, full-field imaging applications has been the focus of intense experimentation and research in recent years.

However, scientists all over the world face a problem known as speckle. Speckle is a random, grainy pattern caused by high spatial coherence that can corrupt the formation of images when traditional lasers are used. The new, electrically pumped semiconductor laser offers a different approach.

It produces an intense emission but with low spatial coherence. “It is tremendously rewarding to work with a team of colleagues to develop speckle-free lasers. It also is exciting to think about the new kinds of clinical diagnostics we can develop,” added co-author and assistant professor Michael A Choma. The new laser is described in a paper in the journal Proceedings of the National Academy of Sciences.

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