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FrozenGate by Avery

Daedal's new BluRay LASER

I'm jealous. I really want a violet laser.

Can you see speckle around the dot? For example if you project the spot into a corner of the room (ceiling) can see speckle around it like with a green or red laser?
 





Very cool! So do you get broken Blue ray players and such to do this? I've got an old CD-r machine I might have to gut now, lol.
 
no just buy a ps3 laser unit from ebay. i am selling my 405nm unit on my site if anyone is interested
 
Ahh cool, I was kinda horrified for a second thinking of someone buying a beautiful ps3 and then taking its laser, lol.
 
flogged said:
I'm jealous. I really want a violet laser.

Can you see speckle around the dot? For example if you project the spot into a corner of the room (ceiling) can see speckle around it like with a green or red laser?
Click to expand...

I can easily see reflections on all corners in a lit room, and at night, because my walls are white, it really seems like I'm holding a blue laser! :D

--DDL
 
Looking good.
I think 3x AA batteries (not rechargable) would be better and would certainly last longer.
Not a great deal bigger in size but again lend themselves to a tube design.

I'll get the red one made up and out the way and think about a blue.
 
Evilution said:
Looking good.
I think 3x AA batteries (not rechargable) would be better and would certainly last longer.
Click to expand...
yes i reckon they would last longer too! 9V batteries suck when it comes to output current and long life, a 9V battery can only supply something like 1 amp into a short, then it is dead! great work daedal! i'd certainly like a violet-ray laser!
 
I don't think only 4.5 V from 3 AA (AAA) will work not enough voltage after the circuit to get the diode to pass the lase threshold.

Also, I was wondering, It looks like the only thing supplying resistance feedback to the ADJ leg of the LM317 is that 100 Ohm Pot.

If I wanted to put a static resistor in there in series with the POT to prevent the resistance from going too low and blowing the diode, what value would work to protect the diode??

Larry
 
Man, I've only been a member here for a few days, but I am constantly amazed by the things you guys are doing. Hell of a job, Daedal! I'm waiting for Senkat's GB to go through to get my red diodes then after getting both of those right, I'm going to try a violet.
Question though. Could you push this a little harder if you incorporated a 555 timer circuit?
 
you prolly could, but it becomes more of a hassle, and most of us are just wanting to get the laser going! even 5mw of UV is amazingly fun!
 
I bet ;)
I'm suprised that I haven't seen any mention of incorporating the 555 timer IC in the drivers I've seen here :-? SenKat's GB diodes are really only running at 80mW constant. The 555 will give you a 1ms 50% duty cycle if set up right in astable mode. I mean, it's not close to the 40ns that the spec sheet shows, but I think that it would dissapate enough heat to get it going at at least 125 mW without killing the life expectancy.
 
80 mW CW max from a GB diode ????  I just posted AGAIN today about getting a little more than that
from a SenKat diode.  
Hey if you are happy with 80 mW -- everyone is happy  :D

Mike
 
shinythings--
people have managed to get more than 80mw from senkat diodes, have a look at some of kenoms threads, he has got like 170mw out of the diode CW!
 
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