MBE makes CW violet laser

摘要

In January last year, Sharp Laboratories Europe produced the first blue-violet lasers by MBE on sapphire-based substrate. This year, the breakthrough is the demonstration of continuous wave operation of violet lasers by MBE grown on GaN substrates. And next year? Dr Jon Heffernan and his Oxford team are by then likely to reduce operating voltage by improving p-type doping and so demonstrate the long lifetimes required for commercial lasers.