Tiny new lasers fill a long-standing gap in the rainbow of visible-light colors, opening new applications
It’s not easy makinggreen. 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 worked as well in building tiny lasers that emit light at yellow and green wavelengths. Researchers refer to the dearth of stable, miniature … Read more
