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

But producing a small spot size with blue light has been tricky, says Hiroshi Ohno, who manages the laser development team to which Hagino belongs. A high brightness laser beam requires both high ...

In a discovery that challenges conventional optics, scientists have managed to make a laser beam cast its own shadow—a feat ...

The green laser increases the optical absorption of the blue illuminating laser beam, creating a matching region in the illuminating light and creating a darker area that appears as a shadow of ...

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

Researchers showed that a laser beam can sometimes act like a solid object ... the shadow appears as the horizontal line traversing the blue background. Credit: Abrahao et al.

In their high-energy state, those electrons can absorb blue light from the second laser. The green laser beam thus behaves like an object, blocking the blue light and casting a dark line across ...

The effect occurs because the green laser increases the optical absorption of the blue illuminating laser beam, creating a matching region in the illuminating light with lower optical intensity.

The green laser increases the optical absorption of the blue illuminating laser beam, creating a matching region in the illuminating light and creating a darker area that appears as a shadow of the ...

The green laser increases the optical absorption of the blue illuminating laser beam, creating a matching region in the illuminating light and creating a darker area that appears as a shadow of ...