Imagine a colour so extraordinary, it exists outside the boundaries of natural vision. A luminous blue-green hue so vivid, it ...

Helium-neon lasers may be little more than glorified neon signs, but there’s just something about that glowing glass tube that makes the whole process of stimulated emission easier to understand.

Of course that conclusion was drawn on the basis of comparing these lasers with existing ones. At that time there was the helium–neon laser, which had a very clean spectrum, and the carbon ...

Helium-neon lasers may be little more than glorified neon signs, but there’s just something about that glowing glass tube that makes the whole process of stimulated emission easier to understand.

The model 500LC uses a low power helium neon laser consisting of precision optical components and an exclusive dedicated 16 bit processor. The laser projects a visible red scanning beam that is aimed ...