It's not easy making green. For years, scientists have fabricated small, high-quality lasers that generate red and blue light. However, the method they typically employ—injecting electric current into ...

For years, scientists have fabricated small, high-quality lasers that generate red and blue light. However, the method they typically employ — injecting electric current into semiconductors — hasn’t ...

Scientists have made small red and blue lasers for years, but other colors have been a challenge. Researchers have filled an important technology gap by creating orange, yellow and green lasers tiny ...