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Old 07-04-2010, 07:28 PM #1
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Default WTB; prism

Looking to purchase a prism and perhaps some other laser effects. If you have something that fits the bill let me know. Thanks in advance


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Old 07-05-2010, 04:14 AM #2
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Default Re: WTB; prism

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Originally Posted by madog View Post
Looking to purchase a prism and perhaps some other laser effects. If you have something that fits the bill let me know. Thanks in advance
You just might find what you need at the Surplus Shed.......

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Old 07-05-2010, 05:07 AM #3
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Default Re: WTB; prism

Not to hijack your thread, but I've read that there's a prism into which you can fire two lasers of different wavelengths from the two sides, and they will be combined (e.g. Green through one side, Red through the other - Yellow is produced from another side).

Anyone know what this prism is called, and where it can be purchased?
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Old 07-05-2010, 07:54 AM #4
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Default Re: WTB; prism

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Originally Posted by agravlin View Post
Not to hijack your thread, but I've read that there's a prism into which you can fire two lasers of different wavelengths from the two sides, and they will be combined (e.g. Green through one side, Red through the other - Yellow is produced from another side).

Anyone know what this prism is called, and where it can be purchased?
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Old 07-05-2010, 08:06 AM #5
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Default Re: WTB; prism

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Originally Posted by DJNY View Post
Dichro550
And where can I purchase one? A Google search turned up no results that looked like places to buy one.
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Old 07-05-2010, 08:20 AM #6
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Default Re: WTB; prism

A dichro (I assume in this case 550 is the optimal wavelength it is coated for) is a mirror of sorts, it allows one wavelength to be reflected while two others can pass, so a dichro for reflecting green would be "refl. green pass red/blue". What you're thinking of is a PBS cube, and they can be bought from various sources, there are very tiny ones in sleds, I think the biggest are from the old KES sleds, but even then, big is only 3-4mm across.
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Old 07-05-2010, 08:26 AM #7
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Default Re: WTB; prism

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Originally Posted by agravlin View Post
And where can I purchase one? A Google search turned up no results that looked like places to buy one.
Try out optical filter 550 or alpha longpass 550
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405nm >> Wickedlasers SONAR by lazeerer peak@968mW
445nm >> Kryton Smooth by lazeerer peak@2075mW
453nm >> Lipstick by rhd peak@158mW
473nm >> Optotronics RPL-B peak@112mW
515nm >> Skylasers HL peak@41mW
532nm >> Novalasers Alpha HP peak@284mW
589nm >> CNI PGL-III-A peak@89mW
594nm >> Laserglow Rigel peak@4mW
635nm >> MXDL by DTR peak@38mW
642nm >> Saillaser peak@23mW
660nm >> CR2 by lazeerer peak@524mW
685nm >> MXDL by lazereer peak@42mW

Above lasers measured with an Ophir nospin LPM


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Old 07-05-2010, 09:13 AM #8
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Default Re: WTB; prism

Usually the "best" (i.e. most available and cheapest) way to get a cube like that is from a bluray sled. They're often small, but they're workable. Buying PBS cubes from companies like Thorlabs or Edmund Optics can be very expensive.

You could also buy some dichros from Daguin's bits and bobs sale, which he harvested from those A140 projectors. They've plates of glass that pass one wavelength and reflect another, so that you can pass light through one surface, but reflect light from another source off it so they combine. Note that aligning these dichros and their light sources is not a trivial task, but could be pretty rewarding if you get it right.
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Old 07-06-2010, 05:19 AM #9
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Default Re: WTB; prism

Dont forget optotronics has a very good selection of large and reasonably priced prisms, and other optics.
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