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Old 01-29-2009, 08:46 PM #1
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Default Where's a good place for diffraction grating?

Hey guys...building a spyrograph...anyone got any good places/ways to buy diffraction grating? thanks!

-Ray-


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Old 01-30-2009, 05:49 PM #2
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Default Re: Where's a good place for diffraction grating?

those 5mw pointers they sell at the dollar store or on ebay sometimes come with up to 40 different gratings....
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Old 02-02-2009, 09:19 AM #3
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Default Re: Where's a good place for diffraction grating?

If a film grating is enoght for you, means if your laser is not very high powerd.

Ask this guy or check his shop, he sell for 2$ plus shiping.

http://www.laserpointerforums.com/fo...m=1231270367/0





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Old 02-03-2009, 01:29 PM #4
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Default Re: Where's a good place for diffraction grating?

If you need bigger sizes than slides, I have a few 30cmX15cm sheets of 13,500 lines per inch diffraction grating I got from a buddy at the University I would sell for $10 each plus shipping (prob around $4 for a postal flat rate priority mail envelope in the US no matter how many sheets you need) - It is easily cut and shaped and cost per square inch is like 10% of the cost of buying slides for $2 each. PM me if interested, in fact I may put a few up in the FS forum, I need to see how many I have left though (I know I have at least 5 or 6 sheets)...
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Old 02-03-2009, 02:22 PM #5
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Default Re: Where's a good place for diffraction grating?

I'm interested, but will they split a 5mW so much that you won't be able to see it?
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Old 02-05-2009, 09:22 PM #6
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Default Re: Where's a good place for diffraction grating?

You definitely lose a little bit with each layer of DG you shine a beam through...I couldn't test the 5mW theory though, the smallest laser I have right now outputs 54mW
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