1W to 30W of 405-410nm from a Nichia :)

[Uranium]

You can't see 370nm at all, what you see there is excited glass.
thye dot from a 370nm laser is deep purple in color. Beam is nealy invisible unless organic compounds or smoke is introduced to the beam, then it becomes bluish purple.

Actually, if you have ever looked into a bright enough blacklight, you see a light glow that seems to come from within the eye. Kind-of weird. [yes i know it's flourecence]

 

[mfo]

I'd love to have a UV laser. Sure, it's dangerous but all of them are. I may get one down the road if the price isn't through the roof.

 

[MarioMaster]

I had a 355nm laser for a while, and you could make out a faint dark violet halo around the dot, similar to 405nm while shining it on my thermopile sensor (ensures that nothing fluoresces)

 

[Trevor]

I'd love to have a UV laser. Sure, it's dangerous but all of them are. I may get one down the road if the price isn't through the roof.

You could always build a nitrogen laser.

-Trevor

 

[Seoul_lasers]

Actually, if you have ever looked into a bright enough blacklight, you see a light glow that seems to come from within the eye. Kind-of weird. [yes i know it's flourecence]

I'd never want to stare at a UV lamp for any length of time unless I wanted to tan my retinas.

UV lamps are extremely dangerous. I once saw a HID output water purification UV lamp here in South Korea for sale. it's a 1KW 4ft long tube filled with Hg vapour.
They said it was capable of delivering more UV than 6 tanning beds. Wouldn't you just love to look at that!
These kind of tubes are rated for ~200nm and in open air can generate some serious Ozone and nozone to dangerous levels quite quickly.
eye protection is a no brainer around these things.

 

[Flaminpyro]

I have a 1 watt 375nm LD and it is much harder to see with the bare eye so there is more potential for damage to happen be sure to use eye protection at all times you have it powered up.
About the only use you will find for this wavelength is florescence you can't see it to well so it's realy not pretty to look at rather boring infact, but it dose make things pop that can flores.
Not realy worth the time to mess with unless you realy need that nm.
You would have done much better to ask for a more visible wavelength no kidding.
have fun be safe !

 

[Uranium]

Well, the only time i'd buy a uv laser is if it's 355nm and i can remove the second crystal to get a couple watts of 532.

 

[Cyparagon]

You can't see 370nm at all, what you see there is excited glass.
thye dot from a 370nm laser is deep purple in color. Beam is nealy invisible

Make up your mind! :undecided:

II once saw a HID output water purification UV lamp here in South Korea for sale. it's a 1KW 4ft long tube filled with Hg vapour.
They said it was capable of delivering more UV than 6 tanning beds.

Well, tanning beds have 16 or more 110 watt bulbs. These bulbs, too, are filled with mercury. So unless you really think 10KW of tanning bed bulbs output less than 1KW of a clear mercury bulb, it was quite an exaggeration.

These kind of tubes are rated for ~200nm

Mercury doesn't have a 200nm spectral line :thinking: 254nm maybe, but it's not the biggest line.

 

[Seoul_lasers]

Right, sorry wrong lamp.

I typed that late at night. The HID Hg-Xe short arc lamp which is used in UV curing applications. IT does have 200nm output and its Kw rate is ~10Kw not 1Kw, so I have been told. Anyways.

 

[Cyparagon]

Unless they use a filter, it cannot have more 200nm radiation that other wavelengths:

 

[Krutz]

I have a 1 watt 375nm LD ...

wait wait! laserdiode or LED? where from? I will eventually get me a mid-uv "flashlight", right now it seems the 365nm nichia LEDs are the best stuff out there..

manuel

 

[Seoul_lasers]

There are Companies out there that do make high end 375nm LD. Be prepared to spend some SERIOUS $$$$ money on those.

 

[Crossfire]

Have you ever seen a black light? Those peak at 370nm.

Quit trying to disguise your speculation as fact.

On the money, Cyparagon. Yes, fluorescent UV bulbs peak at 365-370nm, but they have another strong emission line at 405nm. That will account for a lot of the violet you see emitting from it.

 

[Seoul_lasers]

Right, you are...
However this post is highjacked, we are talking about nichia laser diodes here. Apparently we now have 445nm as well made inpart by casio.
I'd love to see all of these casio projector LD hooked up via optic fiber and emitted as one 30W beam! cool