When the green laser interacted with the ruby, it altered the crystal’s optical properties, increasing its absorption of the blue light and casting a visible shadow in the shape of the green laser.

For the experiment, a high-power green laser was directed through ruby cube and illuminated with a blue laser from the side. The green laser increases the optical absorption of the blue ...

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 ...

co-recipient of the 2014 Nobel Prize in Physics for the invention of blue light-emitting diodes, founded Blue Laser Fusion in Palo Alto, California, in November. Partners include Hiroaki Ohta ...

Blue lasers, lasers that emit a light beam with a wavelength between 400 nm and 500 nm, are key components of various ...

Ruby is a popular material for studying non-linear optics, so the researchers used one as the meeting point for their two lasers, one blue and one green. The blue laser light was directed at one side ...

Shadows have been integral to humanity’s exploration of light and its properties. From their depiction in ancient shadow ...

Can light cast a shadow? It sounds like a tricky riddle, but researchers have shown that, under special conditions, a laser ...

Can light itself, perhaps from a laser, cast a shadow? It might seem like a trick question, but the answer to this is "yes." ...