[Laser] grating?

[Zack Widup]

On Thu, 8 Aug 2002, KD7JYK wrote:

> What is a difraction grating?
> 
> Kurt

Hi Kurt,

I don't know if you got your questions answered.  A diffraction grating is
a material with very fine grooves cut in it very close together (on the
order of microns), or any pattern of alternating clear and dark lines.  I
have made them in the past with a laser and film which is fine-grained
enough to make holograms with.

It can be used as an opticla filter or to split a laser beam into several
beams.

73, Zack W9SZ