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Old 09-18-2007, 04:40 PM #1
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Default yvo and yag crystals

who knows how to get those crystals (small ones) for experimenting with wavelengths?
I live in the Netherlands, and I don't know if I can trust the ads on Ebay....

found a IR DL from an old laserprinter, it must be far in the IR, because even with a webcam I can't see the light...
after hooking the receiverdiode up to my scope, the DL seemed to work correctly.

like you test the ir-led of your remotecontrol with a digital camera, webcam or so, you can see the ir-led lighting up.
since the CCD chip ''sees'' more than the human eye.


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Old 09-18-2007, 06:35 PM #2
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Default Re: yvo and yag crystals

just placed a bid on ebay......nd:yag rod 50x3mm incl. or optic.
let's see what's it's all about.
any suggestions about building one, please do
8-)
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Old 09-19-2007, 03:57 AM #3
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Default Re: yvo and yag crystals

Quote:
Originally Posted by wilfred1970
who knows how to get those crystals (small ones) for experimenting with wavelengths?
I live in the Netherlands, and I don't know if I can trust the ads on Ebay....

found a IR DL from an old laserprinter, it must be far in the IR, because even with a webcam I can't see the light...
after hooking the receiverdiode up to my scope, the DL seemed to work correctly.

like you test the ir-led of your remotecontrol with a digital camera, webcam or so, you can see the ir-led lighting up.
since the CCD chip ''sees'' more than the human eye.
Please know that to generate color from IR you need the right IR wavelength first of all, and then you need a TON of it. The LD's in laser printers are usually much less powerful than is needed to generate light through these crystals.

--DDL
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Old 10-03-2007, 06:34 PM #4
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Default Re: yvo and yag crystals

i've seen examplesof a 808nm dl pumping through a yag or yvo4 crystal and then a kdp crystal to make it green (808--1064--532); and yes in those examples they speak of >1W dl

btw:do you think a co2 OC mirror works with a ruby rod? it's for experimenting only, so i dont want to spend too much euros on it...
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Old 10-03-2007, 06:55 PM #5
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Default Re: yvo and yag crystals

http://www.laserpointerforums.com/fo...num=1190572337
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