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ArcticMyst Security by Avery

A104 445nm @ 1.7A

Seoul_lasers

Seoul_lasers

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Allright I have an interesting video showing just how fast a focussed 445nm laser can cut a wooden q-tip/match stick...
Driver is a Die4lasers driver set at 1.68A at 4.65Vdc.

This is amazing show of just much power one of these diodes can deliver optically.

I have successfully melted silver solder, set steel wool on fire. (not difficult even with a 6x blu-ray), burnt /vaporized carbon, set paper on fire from 20ft away.
These are extremely powerful even though they produce a multimode beam with a high divergence, still plenty powerful to do SERIOUS damage.


edit: had to add this info. Lens is a 405nm coated Aixiz lens. Gives a nice solid (thick) beam when set for infinitive focus that has the ability to burn at quite a distance.
 

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Exerd

Exerd

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They are alright at burning. Nothing as far as visible spectrum diode lasers yet surpasses the 12X 405nm for burning at distance.

Don't you mean A130 and A140, and "Daguin" instead of "Danguin"?

;)
 
millirad

millirad

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Enjoy your Class IV laser responsibly and wear eye protection! Yeah 405nm is best for burning mw for mw and watt for watt.
 
Seoul_lasers

Seoul_lasers

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Got eyewear for it. Well if I had $200 for a 12x blu-ray diode then sure, i'd go for it, they are as you said more efficient burners mW/mA
 
ped

ped

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Are the a104 lasers the ones out of the projectors? Thats quite a high current for one of them isnt it?
 
Seoul_lasers

Seoul_lasers

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Sorry, it should say A140 and no it isn't too high. They regularly run 1.5A in service.
 
lasersbee

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I believe they regularly run at 1Amp to 1.2 Amp....

The ones in the projector run at 1.4 Amps but are
run in pulsed mode...

The risk takers and experimenters will run them much higher
and some have blown their LDs..
If your LD has a good efficient heatsink you can run the LD
hotter...IMO

Jerry
 
Seoul_lasers

Seoul_lasers

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hmm, yes that does sound more reasonable, but I really want someone else to extract the diode and put leads on it for me.
I don't completely trust myself for the extraction process.
 
Seoul_lasers

Seoul_lasers

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ah, I see, well I pushed the A140 up to 1875mA with the die4laser driver. Sink barely got warm after 1minute, after 2 minutes at that current then I noticed the heating and turned down the hot mode to about 1.5-1.6A, I keep the runs down to about 30sec-1minute and this is week 3. It's running fine.
At 1875mA I was able to set fire to card stock pretty much instantaneously, and wood. Where the focussed beam touched the wood there would be a flare of flame, just like those CO2 lasers or laser diode bars.
 
lasersbee

lasersbee

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How about a Pic of your A140 455nm Laser in it's
module... and some dimensions...:cool:

Knowing the Laser Power output would help also...

I have a damaged A130 LD that is pulling 1Amp at
140mW output... and I can see some dead emitters
in the focused beam profile...
Since these are multi-emitter Lasers... if some of the
emitters die... the output is reduced and the current
needs to go up to get output..

(not saying your LD is defective... but knowing the
output power assures that it is not at that input
power)


Jerry
 
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laser_freak

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Wow you're definitely pushing the diode to the limit. But isn't 4.56 V really low for that current? I would expect at least 5 volts.
 
DTR

DTR

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I would also like to see some pictures of the laser unit itself. I have a few running at 1.5A. I have found these to be very tough diodes.
 
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