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Any UV ultra-violet lasers out there?

tsteele93

tsteele93

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Doing some fiddling around on amazon today looking for various LEDs and stumbled on UV flashlights. (Did you know that most scorpions glow when hit with UV light and people use UV flashlights to go looking for them? I kid you not!!!)

Anyway, this got me to wondering, if 405 makes thing flouresce then are there any 390 or 365 nm lasers out there. I know there are plenty of IR lasers (sound dangerous to me!) but a UV laser could be interesting.

Thanks for any leads,
 





Sigurthr

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UV DPSS is easiest done with a tripled NdYAG IIRC. The rest is either $4000 Nichia Diodes or Q switched pulse designs. All are very expensive. I cannot wait for the next thing after Blu-Ray as this will probably give us access to UV diodes. Lots of fun things you can do with UV, just remember to shield your skin (and eyes).
 
laserhead2112

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Well about scorpions I live in Arizona we have plenty of them here and they glow quite well under 405nm
 
rhd

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Sigurthr said:
UV DPSS is easiest done with a tripled NdYAG IIRC. The rest is either $4000 Nichia Diodes or Q switched pulse designs. All are very expensive. I cannot wait for the next thing after Blu-Ray as this will probably give us access to UV diodes. Lots of fun things you can do with UV, just remember to shield your skin (and eyes).
Click to expand...

Anyone know what kind of diode they use in the Tapestry 300r ?

With inPhase in Chapter 11 (I believe?), it may actually be the case that those Tapestry drives become somewhat useless (nobody else would be making the media?). If so, they might pop up on eBay. If they're using Nichia UV laser diodes, it would be worth knowing!
 
rhd

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Sigurhr said:
For a second there RHD you made my heart skip a beat.

InPhase Technologies: Products : Drives & Media

Third bullet down.

(for those who don't want to click the link - it claims to be 405nm.)
Click to expand...

After I posted, I realized how silly my comment was.

375nm from a Nichia UV diode is so marginal of a wavelength difference from 405. You're talking about a wavelength shorter by like 7%. There's no way they'd trade the flexibility of 405 (lots of people make them) for the proprietary-ness of a Nichia UV diode, just to get 7% shorter on wavelength.
 
Sigurthr

Sigurthr

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Aye, I hear ya.

I can't remember what wavelength it is that ionizes O2 to O3 (ozone), but the next step in laser data storage would have to be just above that (maybe 260nm?) because going below it the beam would suffer huge losses through air and ozone generation would be an issue, not to mention oxidative rot of all the parts. It probably wouldn't be nearly as huge of an increase in storage capacity as it was between DVD to Blu-Ray, but it may be significant enough. Who knows, by then it may only last a short time if it even hits at all, before solid state non-optical memory takes over. If we ever do see UV data storage, we need to scoop it all up as fast as we can - it will NOT last.
 
rhd

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I don't think we will see any more optical storage formats.

There's no media consumption argument in favor of them. Downloadable content is already gaining momentum, and certainly a few years from now it will be THE consumption mechanism of choice.

So then it's really JUST the data storage industry pushing potential new optical storage tech forward. I don't think that's a strong enough push, especially given the alternatives already out there.
 
icecruncher

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Used to live in SW Texas desert and Scorpions were all over the place. But I've never seen one under 405nm

Anyone got any pics?
 
Cyparagon

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The way forward with optical media might just be to add more and more layers.

Sigurthr said:
UV DPSS is easiest done with a tripled NdYAG IIRC. The rest is either $4000 Nichia Diodes or Q switched pulse designs. All are very expensive....
Click to expand...

Don't forget about nitrogen.
 
Lase

Lase

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tsteele93 said:
Doing some fiddling around on amazon today looking for various LEDs and stumbled on UV flashlights. (Did you know that most scorpions glow when hit with UV light and people use UV flashlights to go looking for them? I kid you not!!!)
Click to expand...

I used to go out hunting for scorpions. They make great pets for <12 kids.

icecruncher said:
Used to live in SW Texas desert and Scorpions were all over the place. But I've never seen one under 405nm

Anyone got any pics?
Click to expand...




(edited by c0ldshadow someone had a copyright complaint about this image)

Lase

EDIT: Hunting scorpians at night is a dangerous thing to do, both me and my nephew have been unfortunate enough to step on one and be stung.
 
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icecruncher

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Very cool pic

Most UV things look exceptionally cool anyway, but that scorpion takes the cake.
 
Lase

Lase

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Cyparagon said:
Bring a pair of shoes next time.

:na:
Click to expand...

Lol

Unless I was wearing the shoes on my hands they wouldn't have helped anyways :na: EDIT: Explanation - I stood on the scorpion and it grabbed me with it's pincers, trying to pull it off my shoe it stung my hand.

I am very glad that Australia doesn't have many extremely deadly scorpians though.

Lase
 
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