shaheerniazi
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What laser crystal I have
Few months ago I opened up my ancient DVDplayer and I removed the laser apparatus, opened that up and revelaed a crystal it is a cuboid, I think it is
Er:YAG(Erbium doped yittrium aluminum garnet) but i am not sure what it is any thoughts?
This is the apparatus:
and this is the crystal:
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Metacelsus
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What color is the laser beam? Red? Er:YAG produces an infrared beam.
https://en.wikipedia.org/wiki/Er:YAG_laser
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bfesser
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I hate to burst your bubble, but that's not a laser crystal (optical drives use diode lasers). That's simply a <a
href="http://en.wikipedia.org/wiki/Beam_splitter" target="_blank">beam splitter</a> <img src="../scipics/_wiki.png" />.
[edit]
<img src="http://repairfaq.ece.drexel.edu/sam/kss361a.gif" />
[Edited on 26.11.13 by bfesser]
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bfesser
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Thread Moved
26-11-2013 at 06:14 |
shaheerniazi
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Cheddit Cheese: It is an invisible beam.
bfesser: But as wikipedia shows there is a slit type thing diagonally passing through the cuboid but my doesnt have it, even if it is a beam splitter
then what is it made of?
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bfesser
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If I recall correctly, it's polycarbonate (same material as the optical disk itself) with a metallic coating. It's worth saving.
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shaheerniazi
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Thank you it is as valuable to me as a laser crystal, anyway I may store it in an ampoule.
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