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Old 02-15-2010, 10:14 PM #1
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Default Optical Tubes

Has anyone used these products to successfully construct a beam expander ?

tubes Search Newport

and

tubes Search Newport

More products follow on page 4

ThorLabs has similar products.


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Old 02-25-2010, 06:25 PM #2
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Default Re: Optical Tubes

That's kinda pricey. What's wrong with PVC drain pipe? Works great for Mr. Hemlock Mike.
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Old 02-25-2010, 07:09 PM #3
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Default Re: Optical Tubes

I'll show this one again. This is a 4.5x expander made for the CO2 laser. That's why you see a lens that's kinda orange.
The body and mounts are made from machined PVC pipe.

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Old 02-26-2010, 07:46 PM #4
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Default Re: Optical Tubes

Quote:
Originally Posted by Hemlock_Mike View Post
I'll show this one again. This is a 4.5x expander made for the CO2 laser. That's why you see a lens that's kinda orange.
The body and mounts are made from machined PVC pipe.

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Quote:
The body and mounts are made from machined PVC pipe.
Machined that's the problem.
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Old 02-27-2010, 12:45 PM #5
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Default Re: Optical Tubes

instead of buying or self-mading a beam expander, i had the idea to construct a "laser tube" with a laser module from which collimating lenses are removed.
the divergence of the beam in exit of KTP crystal is ~10 or 15 mRad according to sam's FAQ. so put the half module in one side of the tube and a single lens in the other et voilą...
(i did not calculate the required tube size)

i imagine a transparent tube and a naked composite crystal, this would be great
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