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DIY Blue Beam Dye Laser


dr-ebert

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Amazing. Once this was a Nobel prize matter, now it's a hobbyist's occupation...
 
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If you use some pill bottles, a clip board, and some laundry detergent to make a dye laser...you could be a red neck.

WOW..I've seen it all now LOL Very cool.
 

Benm

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It looks impressive, but how does it work?

The nitrogen laser is a pump i suppose, but what forms the lasing cavity for the dye laser? It seems to come out a right angle compared to the pump input, but i see no cavity mirrors or anything like that.
 
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When the beam from the N2 laser is focused into a long line, the dye lases along that line spontaneously making a stable emission.
 
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Really well presented, thanks for sharing that!

OT: I always get a kick out of hearing scientific information in a texan accent.. Nothing funnier than hearing "Y'all gots t' charge tha spark gap an' it discharges daown the cavitay excitin' tha pho-tawns" etc..
PS: No offense intended to texans, ya'll're good folk down there, and I hear tell some of the biggest lasers in the world are operated in texas.
 
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Cyparagon

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Yeah, for whatever reason, southern accents aren't associated with intelligence for me.
 

Benm

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When the beam from the N2 laser is focused into a long line, the dye lases along that line spontaneously making a stable emission.
Oic, so the dye laser is superradiant as well?

Sure seems like a good way to have some fun with those nitrogen lasers - their bad beam and uv wavelengths dont make them very interesting by themselves, but like this it sure looks like a good show. I wonder what the average power output is though.
 

3zuli

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yeah what about building that ruby laser?? what do you think how many watts does it have??
 

Benm

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Those ruby lasers have tremendous output power compared to laser diodes, but only in short pulses. I suppose the typical output are ms-range pulses, and the power depends on how much pump light goes in.

I like the dye laser though - wonder if there is a more practical homebrew way to pump those then using the nitrogen laser. Xenon flashlamps could work, and focus onto a sharp line within the cuvette when using the right optics.

I always though that setting up a proper lasing cavity would be required to get any dye laser to work, but this video somehow makes it look attractively simple (though it probably isnt...)
 

HIMNL9

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Here is another good site for anyone interested in TEA, N2, or dye lasers.

The Professor's Homebuilt Lasers Site - Nitrogen Laser

I think that I need to make one of these and some dye cells...
LOL, this resemble an experiment that our crazy science prof made years ago, at school lab, about lasers and coherent light properties ..... he also used a huge ruby unit for punch holes in "gillette" shaving blades ..... and no safety goggles, in these times :p

(Yes, we had a crazy and funny science prof ..... one time, we flattered the reception of all the radio band in at least 10 Km around the school, making a practical demonstration of "peaks and valleys" on a resonant 2-wires antenna, in a lesson about resonant circuits (using a valve oscillator, a 100 W valve RF power amplifier, and 12 meters of coupled wires as antenna, just for give you an idea, ROTFL)
 




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