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Old 03-10-2011, 03:36 PM #1
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Default Diffraction....

I'm a complete amature to optics, but I was wonderinf if there was anyone on this forum site or a company that sold diffraction lenses or something to break up the beam for cool effects. Thanks in advanced.


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Old 03-10-2011, 03:45 PM #2
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Default Re: Diffraction....

Do you mean diffracton gratings ? (star effects and similars ?)
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Old 03-10-2011, 03:50 PM #3
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Default Re: Diffraction....

Quote:
Originally Posted by HIMNL9 View Post
Do you mean diffracton gratings ? (star effects and similars ?)
and/or diffraction mirrors?

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Old 03-10-2011, 03:51 PM #4
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Default Re: Diffraction....

Let me google that for you
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Old 03-10-2011, 05:46 PM #5
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Default Re: Diffraction....

yes diffraction gratings(where I can make star patterns or a grid of dots), I was wondering if anyone sold them for a 445nm 1W laser that I plan on building in a few weeks once i get the funding, I dont know anything about diffraction mirrors and what they do.
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Old 03-10-2011, 05:50 PM #6
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Default Re: Diffraction....

Quote:
Originally Posted by Kansas Outcast View Post
yes diffraction gratings(where I can make star patterns or a grid of dots), I was wondering if anyone sold them for a 445nm 1W laser that I plan on building in a few weeks once i get the funding, I dont know anything about diffraction mirrors and what they do.
Did you read anything at the link that Ash posted for you?

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Old 03-10-2011, 05:59 PM #7
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Default Re: Diffraction....

Anyway, for an 1W laser, i think you need glass gratings .... i doubt that plastic ones will last enough.


EDIT: by the way, isn't "just a little bit risky" () to diffract around an 1W beam ?
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Old 03-10-2011, 06:02 PM #8
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Default Re: Diffraction....

I havnt had the time yet, to look at it, I usually check the forum between my classes at the University
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Old 03-10-2011, 06:52 PM #9
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Default Re: Diffraction....

Quote:
Originally Posted by HIMNL9 View Post
Anyway, for an 1W laser, i think you need glass gratings .... i doubt that plastic ones will last enough.


EDIT: by the way, isn't "just a little bit risky" () to diffract around an 1W beam ?
Glad you mentioned it
I was planning to shoot my 1.2 W 445 through a common diff grating lol
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Old 03-11-2011, 02:32 AM #10
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Default Re: Diffraction....

I used the link Ash provided I can only find gratings that diffract 'normal' light and say they arent recommended for lasers, plus I think glass would be the best (stated by HIMNL9) Again I'm new to optics so I really have no clue about diffraction gratings other than they pretty much split and diffract the beam to other places. I just figured it'd be cool to do it with a 1w laser (with the proper eyeprotection of course). Ive seen pictures of green lasers with a diffracting grading lense before I didnt know who if anyone produced these.
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Old 03-11-2011, 02:37 AM #11
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Default Re: Diffraction....

DEOS Silicon Diffraction Grating Mirror CO2 - eBay (item 390016805648 end time Apr-01-11 18:29:04 PDT)

https://www.ctlasers.com/purchases/d...ings-p-51.html

I think this is what you are looking for.
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Old 03-11-2011, 02:48 AM #12
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Default Re: Diffraction....

Thanks a bunch! So I don't need a special grading corresponding to the wavelength of light?

Edit: Yeah it would be risky but I am more than careful when it comes to my eyesight and anyone elses eyesight within the room so I would star wiht a weaker powered laser just to learn the dynamics of it and when I'm alone Ill pull out the higher powered one for some beam shots.
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Old 03-11-2011, 03:15 AM #13
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Default Re: Diffraction....

I just found a site selling some diffraction gratings made of glass
DG Star Clusters - Optics - Novalasers Inc.
not sure how credible the site is though.
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Old 03-11-2011, 06:27 AM #14
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Default Re: Diffraction....

Can fully recommend these
http://laserpointerforums.com/f52/aw...tml#post822439
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Old 03-11-2011, 06:38 AM #15
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Default Re: Diffraction....

Very nice! Thanks to everyones advice/explanations and the useful link =)
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