"Cecil Moore" wrote
...
On Jul 2, 3:21 am, "Szczepan Bialek" wrote:
The word "laser" is probably common name for the all atificical light
sources.

No, it is not. From answers.com: "Definition: laser - Any of several
devices that emit highly amplified and coherent radiation of one or
more discrete frequencies."

You should add: "Basically, a man-
made MASER is a device that sets up a series of atoms or molecules and
excites them to generate the chain reaction, or amplification, of
photons."

Laser and maser reworks the light produced by atoms or molecules.

In the Halbach array no atoms or molecules.
There are working only the electrons in vacuum. Like in transmitters,
megatrons and claystrons.
S*