The ability of new blue-light semiconductor lasers to better perform precision cutting, patterning or welding of copper will make electrical and electronic component manufacturing cheaper and more ...

However, such systems cannot match the small size and low-cost benefits provided by semiconductor laser diodes that directly emit green light. The first attempts to fabricate blue and green diode ...

Can light itself cast a shadow? It may sound like a philosophical riddle, but researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow.

The idea arose during a lunch chat when it was pointed out that specific experimental drawings created with 3D visualization tools show the ... the green laser obscured the blue light.