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Chip-scale titanium-sapphire laser puts powerful technology in reach
In a single leap from tabletop to the microscale, engineers at Stanford have produced the world’s first practical titanium-sapphire laser on a chip, democratizing a once-exclusive technology.
“When you leap from tabletop size and make something producible on a chip at such a low cost, it puts these powerful lasers in reach for a lot of different important applications,” said Joshua Yang, a doctoral candidate in Vučković’s lab and co-first author of the study along with Vučković’s Nanoscale and Quantum Photonics Lab colleagues, research engineer Kasper Van Gasse and postdoctoral scholar Daniil M. Lukin. In neuroscience, the researchers can foresee immediate application in optogenetics, a field that allows scientists to control neurons with light guided inside the brain by relatively bulky optical fiber. In ophthalmology, it might find new use with Nobel Prize-winning chirped pulse amplification in laser surgery or offer less expensive, more compact optical coherence tomography technologies used to assess retinal health.
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