fiber optics.
On: Thu, Jun 28, 01 10:31:49 AM
Blueeyedpop wrote:
| <![CDATA[Well, I finally graduated to a larger laser, but I am not
very happy with the beam quality. It has large concentric
rings, with no appearent contamination. I haven't tried to
resolve this with the manufacturer ( I truly forgot who it
is).
So...
I focused the beam to a very small point , and guide the
light where I need it with a small fiber optic(sort of like
in Frank's book). The thing I noticed is that my holograms
have a grainy appearance. I also believe that the
polarization is completely gone.
It is my theory that the larger the fiber optic diameter,
the less sharp my image will be. Does any one have any
experience with this?
What I truly find appealing is that I can do multi beam
setups by focusing the beam on multiple fiber optic
strands, and conveying the light where I want it. All this
on a 2'x2' table.]]> |
RESPONSES
Colin - Mon, Jul 02, 01 06:36:31 PM
<![CDATA[Blueeyedpop,
Have you made an interferometer with fiber optics?]]> 64.167.149.47
Blueeyedpop - Tue, Jul 03, 01 10:56:56 PM
<![CDATA[Hmmmmmmmmmmm
I'll have to think of how to do that.
The polarization is definately gone, and by using a larger
diameter fiber, I can reduce the graininess, but my
exposures are a little dark and murky,.
That could be the new 658nm laser, my exposure, dev. etc.]]> 64.63.88.51
Colin - Wed, Jul 04, 01 12:04:50 AM
<![CDATA[I don't know enough about polorization but, could it be
cicularly polorized?
To make an interferometer that tests the fiber optics I
think all you need to do is aim the beam at two fibers then
expand their outputs with a lens and aim them at a white
screen. You should get a interference pattern. better would
be to use a beam splitter but I think it is unnessary in
your application.
Let us know if you try.]]> 64.170.192.77
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